idk why these stuffs get stashed for so long and I didn't ever commit them

2024-3-22
Delete one unused line
2025-11-06 09:43:54 +08:00 · 2024-03-22 00:00:08 +00:00 · 2024-03-21 22:13:41 +08:00 · 2024-03-18 20:18:12 +08:00 · 2024-03-15 08:34:30 +08:00 · 2024-03-14 20:36:54 +08:00
265 changed files with 29587 additions and 1278 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+!OrigFiles/
+
 ### C++ template
 # Prerequisites
 *.d
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "iostream": "cpp"
+    }
+}
--- a/Chapter1/Chapter1.sln
+++ b/Chapter1/Chapter1.sln
@@ -1,11 +1,9 @@

 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.8.34322.80
+VisualStudioVersion = 17.9.34701.34
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app1-4", "app1-4\app1-4.vcxproj", "{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "b", "b\b.vcxproj", "{51CE097C-C445-4A3E-A678-539C70E334DF}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Chapter1", "Chapter1.vcxproj", "{38D719C8-7D69-48A6-93DC-234C93F7B6BC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,27 +13,19 @@ Global
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Debug|x64.ActiveCfg = Debug|x64
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Debug|x64.Build.0 = Debug|x64
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Debug|x86.ActiveCfg = Debug|Win32
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Debug|x86.Build.0 = Debug|Win32
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Release|x64.ActiveCfg = Release|x64
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Release|x64.Build.0 = Release|x64
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Release|x86.ActiveCfg = Release|Win32
-		{7A2BD8EC-2595-4070-BE3A-2BF2140848B2}.Release|x86.Build.0 = Release|Win32
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Debug|x64.ActiveCfg = Debug|x64
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Debug|x64.Build.0 = Debug|x64
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Debug|x86.ActiveCfg = Debug|Win32
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Debug|x86.Build.0 = Debug|Win32
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Release|x64.ActiveCfg = Release|x64
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Release|x64.Build.0 = Release|x64
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Release|x86.ActiveCfg = Release|Win32
-		{51CE097C-C445-4A3E-A678-539C70E334DF}.Release|x86.Build.0 = Release|Win32
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Debug|x64.ActiveCfg = Debug|x64
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Debug|x64.Build.0 = Debug|x64
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Debug|x86.ActiveCfg = Debug|Win32
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Debug|x86.Build.0 = Debug|Win32
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Release|x64.ActiveCfg = Release|x64
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Release|x64.Build.0 = Release|x64
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Release|x86.ActiveCfg = Release|Win32
+		{38D719C8-7D69-48A6-93DC-234C93F7B6BC}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {2E7BE105-4A42-43C5-A5F2-51518A78298B}
+		SolutionGuid = {E30ECD0C-3E43-481E-9914-3B07AAFE7C8B}
 	EndGlobalSection
 EndGlobal
--- a/Chapter1/Chapter1.vcxproj
+++ b/Chapter1/Chapter1.vcxproj
@@ -18,14 +18,11 @@
      <Platform>x64</Platform>
    </ProjectConfiguration>
  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="b.cpp" />
-  </ItemGroup>
  <PropertyGroup Label="Globals">
    <VCProjectVersion>17.0</VCProjectVersion>
    <Keyword>Win32Proj</Keyword>
-    <ProjectGuid>{51ce097c-c445-4a3e-a678-539c70e334df}</ProjectGuid>
-    <RootNamespace>b</RootNamespace>
+    <ProjectGuid>{38d719c8-7d69-48a6-93dc-234c93f7b6bc}</ProjectGuid>
+    <RootNamespace>Chapter1</RootNamespace>
    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -129,6 +126,9 @@
      <GenerateDebugInformation>true</GenerateDebugInformation>
    </Link>
  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="app1-4.cpp" />
+  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
--- a/Chapter1/app1-4/app1-4.vcxproj.filters
+++ b/Chapter1/app1-4/app1-4.vcxproj.filters
--- a/Chapter1/app1-4.cpp
+++ b/Chapter1/app1-4.cpp
@@ -0,0 +1,33 @@
+#include<iostream>//cout,cin
+using namespace std;
+
+struct stu
+{
+	int xh; // 学号
+	float  height; //身高
+};
+
+int MaxH; // 最高身高
+
+//算法1.1
+int maxHeight(stu student[], int n)
+{
+	MaxH = 1;                           // 1. 设第1个学生身高最高
+	for (int i = 2; i <= n; i++)          // 2. 从第2个学生起依次与最高身比
+	{
+		if (student[i - 1].height > student[MaxH - 1].height) // 2.1 大于最高身高
+			MaxH = i;                                    // 2.2为新最高身高
+	}
+	return student[MaxH - 1].xh;                     // 3.返回最高身高学生学学号
+}
+
+int main()
+{
+	cout << "获取数据" << endl;
+	int n = 6; //学生数
+	int xh;
+	stu student[6] = { {1703001,176},{1703002,180},{1703003,175},{1703004,182.5},{1703005,158.5},{1703005,173.8} };
+	xh = maxHeight(student, n);
+	cout << "身高最高者是：" << xh << endl;
+	return 1;
+}
--- a/Chapter1/app1-4/app1-4.cpp
+++ b/Chapter1/app1-4/app1-4.cpp
@@ -1,21 +0,0 @@
-// USE B.CPP INSTEAD
-
-#include<iostream>
-using namespace std;
-
-void main()
-{
-    int i=0,j=0,count=0;
-	for (i=2;i<=1000;i++)
-	{	
-		for (j=2;j<=i-1;j++)
-			if(i%j==0) 
-				break;
-		if(j>i-1)
-		{
-				cout<<j<<'\t';
-				count++:
-				if(cout%5==0) cout<<endl;		
-		}
-	return ;
-}
--- a/Chapter1/b/b.cpp
+++ b/Chapter1/b/b.cpp
@@ -1,20 +0,0 @@
-#include<iostream>
-using namespace std;
-
-void main()
-{
-	int i = 0, j = 0, count = 0;
-	for (i = 2; i <= 1000; i++)
-	{
-		for (j = 2; j <= i - 1; j++)
-			if (i % j == 0)
-				break;
-		if (j > i - 1)
-		{
-			cout << j << '\t';
-			count++;
-			if (count % 5 == 0) cout << endl;
-		}
-	}
-	return;
-}
--- a/Chapter2/2-1-SqList/SqList.cpp
+++ b/Chapter2/2-1-SqList/SqList.cpp
@@ -1,4 +1,4 @@
-// 2-1-SqList-顺序表
+// 2-1-SqList-顺序表

 #include <iostream>//cout,cin
 using namespace std;
@@ -8,147 +8,147 @@ char pause;


 void dispmenu() {
-	//显示主菜单
+	//显示主菜单
 	cout << endl;
-	cout << "***  顺 序 表   ***\n";
-	cout << " 1-初始化顺序表\n";
-	cout << " 2-创建顺序表\n";
-	cout << " 3-获取第i个元素\n";
-	cout << " 4-按值查找元素位序\n";
-	cout << " 5-插入第i个元素\n";
-	cout << " 6-删除第i个元素\n";
-	cout << " 7-修改第i个元素\n";
-	cout << " 8-清空表\n";
-	cout << " 9-测表长\n";
-	cout << " 10-测表空\n";
-	cout << " 11-测表满\n";
-	cout << " 12-显示表\n";
-	cout << " 13-按值查找前驱\n";
-	cout << " 0-退出\n";
+	cout << "***  顺 序 表   ***\n";
+	cout << " 1-初始化顺序表\n";
+	cout << " 2-创建顺序表\n";
+	cout << " 3-获取第i个元素\n";
+	cout << " 4-按值查找元素位序\n";
+	cout << " 5-插入第i个元素\n";
+	cout << " 6-删除第i个元素\n";
+	cout << " 7-修改第i个元素\n";
+	cout << " 8-清空表\n";
+	cout << " 9-测表长\n";
+	cout << " 10-测表空\n";
+	cout << " 11-测表满\n";
+	cout << " 12-显示表\n";
+	cout << " 13-按值查找前驱\n";
+	cout << " 0-退出\n";
 }


-//主函数
+//主函数
 void main() {
 	int i;
 	int e, pre_e;
-	SqList<int> L;										//建立容量为20、元素类型为整型的空顺序表
-	system("cls");										//执行系统命令cls，清屏
+	SqList<int> L;										//建立容量为20、元素类型为整型的空顺序表
+	system("cls");										//执行系统命令cls，清屏

 	int choice;
 	do {
-		dispmenu();										//显示主菜单
-		cout << "Enter choice(1~12，0 退出):";
+		dispmenu();										//显示主菜单
+		cout << "Enter choice(1~12，0 退出):";
 		cin >> choice;
 		switch (choice) {
-		case 1:										//初始化线性表
-			cout << "请输入要创建的顺序表的长度：";
+		case 1:										//初始化线性表
+			cout << "请输入要创建的顺序表的长度：";
 			cin >> i;
 			cout << endl;
 			InitList(L, i);
-			cout << endl << "创建成功！" << endl;
+			cout << endl << "创建成功！" << endl;
 			break;
-		case 2:									//创建线性表
-			cout << "请输入要创建的元素个数:";
+		case 2:									//创建线性表
+			cout << "请输入要创建的元素个数:";
 			cin >> i;
 			cout << endl;
 			CreateList(L, i);
-			cout << "创建的顺序表元素为：\n";     //显示表元素
+			cout << "创建的顺序表元素为：\n";     //显示表元素
 			DispList(L);
 			cout << endl;
 			break;
-		case 3:										//获取第i个元素
-			cout << "请输入元素序号:";
+		case 3:										//获取第i个元素
+			cout << "请输入元素序号:";
 			cin >> i;
 			cout << endl;
 			if (GetElem_i(L, i, e))
-				cout << endl << "第" << i << "个元素为:" << e << endl;
+				cout << endl << "第" << i << "个元素为:" << e << endl;
 			else
-				cout << endl << "元素不存在！" << endl;
+				cout << endl << "元素不存在！" << endl;
 			break;
-		case 4:									//按值查找
-			cout << "请输入要查询的元素值:";
+		case 4:									//按值查找
+			cout << "请输入要查询的元素值:";
 			cin >> e;
 			i = LocateElem_e(L, e);
 			if (i)
-				cout << endl << e << "是第" << i << "个数据元素" << endl;
+				cout << endl << e << "是第" << i << "个数据元素" << endl;
 			else
-				cout << endl << "不存在此元素！" << endl;
+				cout << endl << "不存在此元素！" << endl;
 			break;
-		case 5:									// 在第i个位置插入元素
-			cout << "输入插入位置：" << endl;
+		case 5:									// 在第i个位置插入元素
+			cout << "输入插入位置：" << endl;
 			cin >> i;
-			cout << "输入插入元素值：" << endl;
+			cout << "输入插入元素值：" << endl;
 			cin >> e;
 			if (InsertElem_i(L, i, e)) {
-				cout << endl << "插入成功！" << endl;
+				cout << endl << "插入成功！" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "插入不成功！" << endl;;
+				cout << endl << "插入不成功！" << endl;;
 			break;
-		case 6:									//删除第i个元素
-			cout << "输入删除元素位置：" << endl;
+		case 6:									//删除第i个元素
+			cout << "输入删除元素位置：" << endl;
 			cin >> i;
 			if (DeleElem_i(L, i)) {
-				cout << endl << "删除成功！" << endl;
+				cout << endl << "删除成功！" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "删除失败！" << endl;
+				cout << endl << "删除失败！" << endl;
 			break;
-		case 7:									//修改第i个元素的值
-			cout << "输入修改元素位置：" << endl;
+		case 7:									//修改第i个元素的值
+			cout << "输入修改元素位置：" << endl;
 			cin >> i;
-			cout << "输入新元素值：" << endl;
+			cout << "输入新元素值：" << endl;
 			cin >> e;
 			if (PutElem(L, i, e)) {
-				cout << endl << "修改成功！" << endl;
+				cout << endl << "修改成功！" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "修改失败！" << endl;
+				cout << endl << "修改失败！" << endl;
 			break;
-		case 8:									// 清空表
+		case 8:									// 清空表
 			ClearList(L);
 			break;
-		case 9:									// 测表长
-			cout << "表长为：" << ListLength(L) << endl;
+		case 9:									// 测表长
+			cout << "表长为：" << ListLength(L) << endl;
 			break;
-		case 10:									//测表空
+		case 10:									//测表空
 			if (ListEmpty(L))
-				cout << endl << "空表！" << endl;
+				cout << endl << "空表！" << endl;
 			else
-				cout << endl << "不是空表！" << endl;
+				cout << endl << "不是空表！" << endl;
 			break;
-		case 11:									// 未表满
+		case 11:									// 未表满
 			if (ListFull(L))
-				cout << endl << "表满！" << endl;
+				cout << endl << "表满！" << endl;
 			else
-				cout << endl << "表不满！" << endl;
+				cout << endl << "表不满！" << endl;
 			break;
-		case 12:									//遍历显示表
+		case 12:									//遍历显示表
 			DispList(L);
 			cout << endl;
 			cin.get(pause);
 			system("pause");
 			break;
 		case 13:
-			cout << "测试顺序表为\n";
+			cout << "测试顺序表为\n";
 			DispList(L);
-			cout << "输入查找前驱的元素值：\n";
+			cout << "输入查找前驱的元素值：\n";
 			cin >> e;
 			if (PriorElem_e(L, e, pre_e))
-				cout << e << "的前驱元素为：" << pre_e << endl;
+				cout << e << "的前驱元素为：" << pre_e << endl;
 			else
-				cout << e << "无前驱元素！" << endl;
+				cout << e << "无前驱元素！" << endl;
 			break;
-		case 0:  //退出
+		case 0:  //退出

-			cout << "结束运行bye-bye!" << endl;
+			cout << "结束运行bye-bye!" << endl;
 			break;
-		default:									//无效选择
-			cout << "无效选择!\n";
+		default:									//无效选择
+			cout << "无效选择!\n";
 			break;
 		}
 	} while (choice != 0);
--- a/Chapter2/2-1-SqList/SqList.h
+++ b/Chapter2/2-1-SqList/SqList.h
@@ -1,14 +1,14 @@
 template <class DT>
-struct SqList									// 顺序表
+struct SqList									// 顺序表
 {
-	DT* elem;									// 表首址
-	int length;									// 表长
-	int size;									// 表容量
+	DT* elem;									// 表首址
+	int length;									// 表长
+	int size;									// 表容量
 };

-//算法2.1
+//算法2.1
 template <class DT>
-bool PriorElem_e(SqList<DT> L, DT e, DT& pre_e)				// 求值为e的元素前驱
+bool PriorElem_e(SqList<DT> L, DT e, DT& pre_e)				// 求值为e的元素前驱
 {
 	int k;
 	k = LocateElem_e(L, e);					//
@@ -21,119 +21,119 @@ bool PriorElem_e(SqList<DT> L, DT e, DT& pre_e)				//
 		return true;
 }

-//【算法2.2】									初始化
+//【算法2.2】									初始化
 template <class DT>
 bool InitList(SqList<DT>& L, int m)
 {
-	L.elem = new DT[m];							// 申请表空间
+	L.elem = new DT[m];							// 申请表空间
 	if (L.elem == NULL)
 	{
-		cout << "未创建成功！";					// 申请不成功，退出
+		cout << "未创建成功！";					// 申请不成功，退出
 		exit(1);
 	}
-	L.length = 0;									// 申请成功，属性赋值。空表，表长为0 
-	L.size = m;									// 表容量为m
+	L.length = 0;									// 申请成功，属性赋值。空表，表长为0 
+	L.size = m;									// 表容量为m
 	return true;
 }

-//【算法2.3】									创建表元素
+//【算法2.3】									创建表元素
 template <class DT>
 bool CreateList(SqList<DT>& L, int n)
 {
 	int i;
-	if (n > L.size)								// 1.元素个数大于表容量，不能创建。
+	if (n > L.size)								// 1.元素个数大于表容量，不能创建。
 	{
-		cout << "元素个数大于表长，不能创建！" << endl;
+		cout << "元素个数大于表长，不能创建！" << endl;
 		return false;
 	}
-	cout << "请依次输入" << n << "个元素值：" << endl;	// 2.依位序输入各元素值
+	cout << "请依次输入" << n << "个元素值：" << endl;	// 2.依位序输入各元素值
 	for (i = 1; i <= n; i++)
 		cin >> L.elem[i - 1];
-	L.length = n;									// 3.表长为创建的元素个数
+	L.length = n;									// 3.表长为创建的元素个数
 	return true;
 }

-//【算法2.4】									销毁顺序表
+//【算法2.4】									销毁顺序表
 template <class DT>
 void DestroyList(SqList<DT>& L)
 {
-	delete[] L.elem;							// 1.释放表空间
-	L.length = 0;									// 2.属性赋值
+	delete[] L.elem;							// 1.释放表空间
+	L.length = 0;									// 2.属性赋值
 	L.size = 0;
 }

-//【算法2.5】									获取第i个元素值
+//【算法2.5】									获取第i个元素值
 template<class DT>
 bool GetElem_i(SqList<DT> L, int i, DT& e)
 {
-	if (i<1 || i>L.length)						// 1.位序不合理，返回false
+	if (i<1 || i>L.length)						// 1.位序不合理，返回false
 	{
-		cout << "该元素不存在！" << endl;
+		cout << "该元素不存在！" << endl;
 		return false;
 	}
-	e = L.elem[i - 1];								// 2. 否则，获取第i个元素值
-	return true;								// 返回true
+	e = L.elem[i - 1];								// 2. 否则，获取第i个元素值
+	return true;								// 返回true
 }

-//【算法2.6】									按值查找
+//【算法2.6】									按值查找
 template<class DT>
 int LocateElem_e(SqList<DT> L, DT e)
 {
-	for (int i = 0; i < L.length; i++)				// 顺序查找
-		if (L.elem[i] == e)						// 1.找到
-			return i + 1;							// 返回元素位序
-	return 0;									// 2.未找到，返回0
+	for (int i = 1; i <= L.length; i++)				// 顺序查找
+		if (L.elem[i - 1] == e)						// 1.找到
+			return i;							// 返回元素位序
+	return 0;									// 2.未找到，返回0
 }

-//【算法2.7】
+//【算法2.7】
 template<class DT>
 bool InsertElem_i(SqList<DT>& L, int i, DT e)
 {
-	if (L.length >= L.size)						// 1.表满，不能插入
+	if (L.length >= L.size)						// 1.表满，不能插入
 		return false;
-	if (i<1 || i>L.length + 1)						// 2.插入位置不合理，不能插入
+	if (i<1 || i>L.length + 1)						// 2.插入位置不合理，不能插入
 		return false;
-	for (int j = L.length; j >= i; j--)				// 3. an~ai依次后移
+	for (int j = L.length; j >= i; j--)				// 3. an~ai依次后移
 		L.elem[j] = L.elem[j - 1];
 	L.elem[i - 1] = e;
 	L.length++;
-	return true;								// 插入成功，返回true
+	return true;								// 插入成功，返回true
 }

-//【算法2.8】									删除第i个元素
+//【算法2.8】									删除第i个元素
 template<class DT>
 bool DeleElem_i(SqList<DT>& L, int i)
 {
-	if (L.length == 0)								// 1.表空，不能删除
+	if (L.length == 0)								// 1.表空，不能删除
 		return false;
-	if (i<1 || i>L.length)						// 2.删除位置不合理，不能插入
+	if (i<1 || i>L.length)						// 2.删除位置不合理，不能插入
 		return false;
-	for (int j = i; j < L.length; j++)				// 3. ai+1~an依次前移
+	for (int j = i; j < L.length; j++)				// 3. ai+1~an依次前移
 		L.elem[j - 1] = L.elem[j];
 	L.length--;
-	return true;								// 删除成功，返回true
+	return true;								// 删除成功，返回true
 }


-//【算法2.9】
+//【算法2.9】
 template<class DT>
-bool PutElem(SqList<DT>& L, int i, DT e)			// 修改第i个元素的值
+bool PutElem(SqList<DT>& L, int i, DT e)			// 修改第i个元素的值
 {
-	if (i<1 || i>L.length)						// 1.位序不合理，不能修改，
-		return false;							// 返回false
-	L.elem[i - 1] = e;								// 2.重置第i个元素值
-	return true;								// 3.修改成功，返回true
+	if (i<1 || i>L.length)						// 1.位序不合理，不能修改，
+		return false;							// 返回false
+	L.elem[i - 1] = e;								// 2.重置第i个元素值
+	return true;								// 3.修改成功，返回true
 }

-// 清空顺序表
+// 清空顺序表
 template<class DT>
 void ClearList(SqList<DT>& L)
 {
-	L.length = 0;									 // 空表，表长为0
+	L.length = 0;									 // 空表，表长为0
 }


-// 测表长
+// 测表长
 template<class DT>
 int ListLength(SqList<DT> L)
 {
@@ -142,31 +142,31 @@ int ListLength(SqList<DT> L)


 template<class DT>
-bool ListEmpty(SqList<DT> L)					// 测表空
+bool ListEmpty(SqList<DT> L)					// 测表空
 {
-	if (L.length == 0)								 // 空表，返回true
+	if (L.length == 0)								 // 空表，返回true
 		return true;
 	else
-		return false;							// 非空表，返回false
+		return false;							// 非空表，返回false
 }

 template<class DT>
 bool ListFull(SqList<DT> L)
 {
-	if (L.length == L.size)						// 表满，返回true
+	if (L.length == L.size)						// 表满，返回true
 		return true;
 	else
-		return false;							// 表不满，返回false
+		return false;							// 表不满，返回false
 }

-//【算法2.10】									遍历输出
+//【算法2.10】									遍历输出
 template <class DT>
 void DispList(SqList<DT> L)
 {
 	int i;
-	for (i = 0; i < L.length; i++)					// 依位序输出元素值
+	for (i = 1; i <= L.length; i++)					// 依位序输出元素值
 	{
-		cout << L.elem[i] << "\t";
+		cout << L.elem[i - 1] << "\t";

 	}
 	cout << endl;
--- a/Chapter2/2-2-LinkList/LinkList.cpp
+++ b/Chapter2/2-2-LinkList/LinkList.cpp
@@ -1,186 +1,186 @@
-// 2-2-LinkList-单链表
+// 2-2-LinkList-单链表
 // WARNING: /sdl is disabled to pass the compilation process.

 #include<iostream>     //cout,cin
 using namespace std;
 #include "LinkList.h"

-//算法2.25											单链表逆置
+//算法2.25											单链表逆置
 void ReverseLinkList(LNode<int>*& L)
 {
-	LNode<int>* p, * q;								// 1.设置工作指针
-	p = L->next;										// 原链表头结点，作为逆置后表的头结点
+	LNode<int>* p, * q;								// 1.设置工作指针
+	p = L->next;										// 原链表头结点，作为逆置后表的头结点
 	L->next = NULL;
-	while (p)										// 2. 依次摘除原链表结点，以头插法插入到逆置链表中
+	while (p)										// 2. 依次摘除原链表结点，以头插法插入到逆置链表中
 	{
-		q = p;										// 2.1 q取当前结点位置   
-		p = p->next;									// 2.2 p指向下一个待处理结点
-		q->next = L->next;							// 2.3 将q 插入到头结点之后
+		q = p;										// 2.1 q取当前结点位置   
+		p = p->next;									// 2.2 p指向下一个待处理结点
+		q->next = L->next;							// 2.3 将q 插入到头结点之后
 		L->next = q;
 	}
 }

 void dispmenu()
-{															// 显示主菜单
+{															// 显示主菜单
 	cout << endl;
-	cout << " ***  单  链  表  ***\n";
-	cout << " 1-初始化单链表\n";
-	cout << " 2-尾插法顺序表\n";
-	cout << " 3-头插法建表\n";
-	cout << " 4-获取第i个元素\n";
-	cout << " 5-按值查找\n";
-	cout << " 6-插入第i个元素\n";
-	cout << " 7-删除第i个元素\n";
-	cout << " 8-修改第i个元素\n";
-	cout << " 9-清空表\n";
-	cout << "10-测表长\n";
-	cout << "11-测表空\n";
-	cout << "12-遍历输出\n";
-	cout << "13-按值查找前驱\n";
-	cout << "14-单链表逆置\n";
-	cout << "0-退出\n";
+	cout << " ***  单  链  表  ***\n";
+	cout << " 1-初始化单链表\n";
+	cout << " 2-尾插法顺序表\n";
+	cout << " 3-头插法建表\n";
+	cout << " 4-获取第i个元素\n";
+	cout << " 5-按值查找\n";
+	cout << " 6-插入第i个元素\n";
+	cout << " 7-删除第i个元素\n";
+	cout << " 8-修改第i个元素\n";
+	cout << " 9-清空表\n";
+	cout << "10-测表长\n";
+	cout << "11-测表空\n";
+	cout << "12-遍历输出\n";
+	cout << "13-按值查找前驱\n";
+	cout << "14-单链表逆置\n";
+	cout << "0-退出\n";
 }

 char pause;

-// 主函数
+// 主函数
 int main()
 {
 	int i, n;
 	int e, pre_e;
 	LNode<int>* L;
-	system("cls");											// 清屏
+	system("cls");											// 清屏

 	int choice;
 	do
 	{
-		dispmenu();											// 显示主菜单
-		cout << "Enter choice(1~12，0 退出):";
+		dispmenu();											// 显示主菜单
+		cout << "Enter choice(1~12，0 退出):";
 		cin >> choice;
 		switch (choice)
 		{
-		case 1:											// 初始化单链表 
+		case 1:											// 初始化单链表 
 			InitList(L);
-			cout << endl << "创建成功！" << endl;
+			cout << endl << "创建成功！" << endl;
 			break;
-		case 2:										// 尾插法建单链表
-			cout << "尾插法创建单链表" << endl;
-			cout << "输入要创建的顺序表中元素个数:";
+		case 2:										// 尾插法建单链表
+			cout << "尾插法创建单链表" << endl;
+			cout << "输入要创建的顺序表中元素个数:";
 			cin >> n;
 			cout << endl;
 			CreateList_1(L, n);
-			cout << "创建的单链表为：";
+			cout << "创建的单链表为：";
 			DispList(L);
 			cout << endl;
 			break;
-		case 3:											// 头插法创建单链表
-			cout << "头插法创建单链表" << endl;
-			cout << "输入要创建的顺序表中元素个数:";
+		case 3:											// 头插法创建单链表
+			cout << "头插法创建单链表" << endl;
+			cout << "输入要创建的顺序表中元素个数:";
 			cin >> n;
 			cout << endl;
 			CreateList_2(L, n);
-			cout << "创建的单链表为：";
+			cout << "创建的单链表为：";
 			DispList(L);
 			cout << endl;
 			break;
-		case 4:										// 获取第i个元素
-			cout << "请输入元素序号:";
+		case 4:										// 获取第i个元素
+			cout << "请输入元素序号:";
 			cin >> i;
 			cout << endl;
 			if (GetElem_i(L, i, e))
-				cout << endl << "第" << i << "个元素为:" << e << endl;
+				cout << endl << "第" << i << "个元素为:" << e << endl;
 			else
-				cout << endl << "元素不存在！" << endl;
+				cout << endl << "元素不存在！" << endl;
 			break;
-		case 5:										// 查询元素位序
-			cout << "请输入要查询的元素值:";
+		case 5:										// 查询元素位序
+			cout << "请输入要查询的元素值:";
 			cin >> e;
 			i = LocateElem_e(L, e);
 			if (i)
-				cout << endl << e << "是第" << i << "个数据元素" << endl;
+				cout << endl << e << "是第" << i << "个数据元素" << endl;
 			else
-				cout << endl << "不存在此元素！" << endl;
+				cout << endl << "不存在此元素！" << endl;
 			break;
-		case 6:										// 插入第i个元素
-			cout << "输入插入位置：" << endl;
+		case 6:										// 插入第i个元素
+			cout << "输入插入位置：" << endl;
 			cin >> i;
-			cout << "输入插入元素值：" << endl;
+			cout << "输入插入元素值：" << endl;
 			cin >> e;
 			if (InsertElem_i(L, i, e))
 			{
-				cout << endl << "插入成功！" << endl;
-				cout << "插入元素后的单链表为：" << endl;
+				cout << endl << "插入成功！" << endl;
+				cout << "插入元素后的单链表为：" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "插入不成功！" << endl;
+				cout << endl << "插入不成功！" << endl;
 			break;
-		case 7:										// 删除第i个元素
-			cout << "输入删除元素位置：" << endl;
+		case 7:										// 删除第i个元素
+			cout << "输入删除元素位置：" << endl;
 			cin >> i;
 			if (DeleElem_i(L, i))
 			{
-				cout << endl << "删除成功！" << endl;
-				cout << "删除元素后的单链表为：" << endl;
+				cout << endl << "删除成功！" << endl;
+				cout << "删除元素后的单链表为：" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "删除失败！" << endl;
+				cout << endl << "删除失败！" << endl;
 			break;
-		case 8:										// 修改第i个元素
-			cout << "输入修改元素位置：" << endl;
+		case 8:										// 修改第i个元素
+			cout << "输入修改元素位置：" << endl;
 			cin >> i;
-			cout << "输入新元素值：" << endl;
+			cout << "输入新元素值：" << endl;
 			cin >> e;
 			if (PutElem_i(L, i, e))
 			{
-				cout << endl << "修改成功！" << endl;
-				cout << "修改后的单链表为：" << endl;
+				cout << endl << "修改成功！" << endl;
+				cout << "修改后的单链表为：" << endl;
 				DispList(L);
 			}
 			else
-				cout << endl << "修改失败！" << endl;
+				cout << endl << "修改失败！" << endl;
 			break;
-		case 9:										// 清空表
+		case 9:										// 清空表
 			ClearList(L);
 			break;
-		case 10:										// 测表长
-			cout << "表长为：" << ListLength(L) << endl;
+		case 10:										// 测表长
+			cout << "表长为：" << ListLength(L) << endl;
 			break;
-		case 11:										// 测表空
+		case 11:										// 测表空
 			if (ListEmpty(L))
-				cout << endl << "空表！" << endl;
+				cout << endl << "空表！" << endl;
 			else
-				cout << endl << "不是空表！" << endl;
+				cout << endl << "不是空表！" << endl;
 			break;
-		case 12:										//遍历显示表
+		case 12:										//遍历显示表
 			DispList(L);
 			cout << endl;
 			break;
 		case 13:
-			cout << "测试链表为\n";
+			cout << "测试链表为\n";
 			DispList(L);
-			cout << "输入查找前驱的元素值：\n";
+			cout << "输入查找前驱的元素值：\n";
 			cin >> e;
 			if (PriorElem_e(L, e, pre_e))
-				cout << e << "的前驱元素为：" << pre_e << endl;
+				cout << e << "的前驱元素为：" << pre_e << endl;
 			else
-				cout << e << "无前驱元素！" << endl;
+				cout << e << "无前驱元素！" << endl;
 			break;
-		case 14:									// 逆置单链表
-			cout << "逆置前的单链表为：";
+		case 14:									// 逆置单链表
+			cout << "逆置前的单链表为：";
 			DispList(L);
 			ReverseLinkList(L);
-			cout << "逆置后的单链表为：";
+			cout << "逆置后的单链表为：";
 			DispList(L);
 			cout << endl;
 			break;
-		case 0:										//退出，销毁链表
+		case 0:										//退出，销毁链表
 			DestroyList(L);
-			cout << "结束运行bye-bye!" << endl;
+			cout << "结束运行bye-bye!" << endl;
 			break;
-		default:										//无效选择
-			cout << "无效选择!\n";
+		default:										//无效选择
+			cout << "无效选择!\n";
 			break;
 		}
 	} while (choice != 0);
--- a/Chapter2/2-2-LinkList/LinkList.h
+++ b/Chapter2/2-2-LinkList/LinkList.h
@@ -1,249 +1,249 @@

 template <class DT>
-struct LNode										//链表结点
+struct LNode										//链表结点
 {
-	DT data;										//数据域，存储数据元素值
-	LNode* next;									//指针域，指向下一个结点
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
 };

-//算法2.1
+//算法2.1
 template <class DT>
-bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
+bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
 {
 	int k;
-	k = LocateElem_e(L, e);							// 1.获取e的位序k
-	if (k > 1)											// 2.位序k大于1
+	k = LocateElem_e(L, e);							// 1.获取e的位序k
+	if (k > 1)											// 2.位序k大于1
 	{
-		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
+		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
 		return true;
 	}
-	else											// 3.元素e无前驱
-		return false;								// 返回false
+	else											// 3.元素e无前驱
+		return false;								// 返回false
 }

-//【算法2.14】										创建空单链表
+//【算法2.14】										创建空单链表
 template <class DT>
 bool InitList(LNode<DT>*& L)
 {
-	L = new LNode<DT>;								// 1.创建头结点
-	if (!L) exit(1);									// 2.创建失败，退出
-	L->next = NULL;									// 3.创建成功
-	return true;									// 返回true
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
 }

-//【算法2.15】										尾插法创建n的元素
+//【算法2.15】										尾插法创建n的元素
 template <class DT>
 bool CreateList_1(LNode<DT>*& L, int n)
 {
 	int i;
 	LNode<DT>* p, * s;
-	p = L;											//1.工作指针初始化，指向尾结点
-	cout << "依次输入" << n << "个数据元素：" << endl;
-	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
 	{
-		s = new LNode<DT>;							// 2.1 新建一个结点s
-		if (!s)										// 2.2 创建失败，返回false
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
 			return false;
-		cin >> s->data;								// 2.3 输入结点值
-		s->next = p->next;							// 2.4 s 链在表尾
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
 		p->next = s;
-		p = s;										// 2.5 工作指针指向 s
+		p = s;										// 2.5 工作指针指向 s
 	}
-	return true;									// 3.创建成功，返回true
+	return true;									// 3.创建成功，返回true
 }

-//【算法2.16】										头插法创建n个元素
+//【算法2.16】										头插法创建n个元素
 template <class DT>
 bool CreateList_2(LNode<DT>* (&L), int n)
 {
 	int i;
 	LNode<DT>* s;
-	cout << "逆序输入" << n << "个数据元素：" << endl;
-	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
 	{
-		s = new LNode<DT>;							// 1.1 新建一个结点 s
-		if (!s)										// 1.2 创建失败，返回false
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
 			return false;
-		cin >> s->data;								// 1.3 输入结点值
-		s->next = L->next;							// 1.4 s 在头结点后
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
 		L->next = s;
 	}
-	return true;									// 1.创建成功，返回true
+	return true;									// 1.创建成功，返回true
 }

-//【算法2.17】
+//【算法2.17】
 template <class DT>
-void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
 {
 	LNode<DT>* p;
-	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
 	{
-		p = L;										// 1.1 处理表头结点
-		L = L->next;									// 1.2 头指针后移
-		delete p;									// 1.3 释放表头结点所占内存
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
 	}
-	L = NULL;											// 2.头指针指向空
+	L = NULL;											// 2.头指针指向空
 }

-//【算法2.18】										获取第i个元素
+//【算法2.18】										获取第i个元素
 template<class DT>
 bool GetElem_i(LNode<DT>* L, int i, DT& e)
 {
-	LNode<DT>* p;									// 1.初始化
-	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
-	int j = 1;										// 1.2 计数器初始化
-	while (p && j < i)									// 2.定位到第i个元素结点
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
 	{
 		p = p->next; j++;
 	}
-	if (!p || j > i)									// 3 未找到，返回false
+	if (!p || j > i)									// 3 未找到，返回false
 		return false;
-	else											// 4. 找到
+	else											// 4. 找到
 	{
-		e = p->data;									// 获取第i个元素值
-		return true;								// 返回true
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
 	}
 }

-//【算法2.19】										查找值为e的元素位序
+//【算法2.19】										查找值为e的元素位序
 template<class DT>
 int LocateElem_e(LNode<DT>* L, DT e)
 {

-	LNode<DT>* p;									// 1.初始化从首元开始查找
-	p = L->next;										// 1.1从首元开始查找
-	int j = 1;										// 1.2 计数器初值
-	while (p && p->data != e)							// 2.顺序查找
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
 	{
-		p = p->next;									// 2.1未找到指针后移
-		j++;										// 2.2 计数器增1
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
 	}
-	if (p == NULL)										// 3. 判断是否找到
-		return 0;									// 3.1末找到，返回0
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
 	else
-		return j;									// 3.2 找到，返回位序
+		return j;									// 3.2 找到，返回位序
 }

-//【算法2.20】										插入第i个元素
+//【算法2.20】										插入第i个元素
 template<class DT>
 bool InsertElem_i(LNode<DT>*& L, int i, DT e)
 {

 	int j = 0;
-	LNode<DT>* p;									// 1.初始化
-	p = L;											// 工作指针初始化
-	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
 	{
 		p = p->next;
 		j++;
 	}
-	if (!p || j > i - 1)									// 3.判断定位是否成功：    
-		return false;								// 3.1 定位失败，不能插入
-	else											// 3.2 定位成功
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
 	{
 		LNode<DT>* s;
-		s = new LNode<DT>;							// 3.2.1建立新结点
-		s->data = e;									// 3.2.2新结点赋值
-		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
 		p->next = s;
-		return true;								// 3.2.4 插入成功，返回true
+		return true;								// 3.2.4 插入成功，返回true
 	}

 }

-//【算法2.21】										删除第i个元素
+//【算法2.21】										删除第i个元素
 template<class DT>
 bool DeleElem_i(LNode<DT>* (&L), int i)
 {

-	LNode<DT>* p, * q;								//1.初始化：设置工作指针
-	p = L;											//查找从头结点开始
-	int j = 0;										//计数器初始化
-	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
 	{
 		p = p->next;
 		j++;
 	}
-	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
-		return false;								//返回false
-	else											//4.删除操作
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
 	{
-		q = p->next;									//4.1暂存删除结点位置
-		p->next = q->next;							//4.2从链表中摘除删除结点
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
 		delete q;
-		return true;								//4.3删除成功，返回true
+		return true;								//4.3删除成功，返回true
 	}
 }


-//【算法2.22】										修改第i个元素值
+//【算法2.22】										修改第i个元素值
 template<class DT>
 bool PutElem_i(LNode<DT>* (&L), int i, DT e)
 {
-	LNode<DT>* p;									// 1.初始化:设置工作指针
-	p = L->next;										// 从首结点开始，数结点
-	int j = 1;										// 计数器初始化
-	while (p && j < i)									// 2.查找第i个元素结点
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
 	{
 		p = p->next; j++;
 	}
-	if (!p || j > i)										// 3.元素不存在,返回false
+	if (!p || j > i)										// 3.元素不存在,返回false
 		return false;
-	else											// 4.定位成功
+	else											// 4.定位成功
 	{
-		p->data = e;									// 修改元素值
-		return true;								// 返回true
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
 	}
 }

-// 释放链表所占空间
+// 释放链表所占空间
 template<class DT>
 void ClearList(LNode<DT>* (&L))
 {

 	LNode<DT>* p;
-	while (L->next)									// 从首元结点开始，依次释放结点
+	while (L->next)									// 从首元结点开始，依次释放结点
 	{
 		p = L->next;
 		L->next = p->next;
 		delete p;
 	}
-	cout << endl << "表已清空!" << endl;
+	cout << endl << "表已清空!" << endl;
 }


-//【算法2.23】										测表长
+//【算法2.23】										测表长
 template<class DT>
 int ListLength(LNode<DT>* L)
-{													// 1.初始化
-	int len = 0;										// 1.1 结点计数器赋初值0
-	LNode<DT>* p;									// 1.2设置工作指针
-	p = L;											// 指向头结点
-	while (p->next)									// 2.数结点个数。有后继结点，  
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
 	{
-		len++; p = p->next;							// 结点数增1，指针后移
+		len++; p = p->next;							// 结点数增1，指针后移
 	}
-	return len;										// 3.返回表长
+	return len;										// 3.返回表长
 }

 //
 template<class DT>
-bool ListEmpty(LNode<DT>* L)						//测表空
+bool ListEmpty(LNode<DT>* L)						//测表空
 {
 	if (L->next == NULL)
-		return true;								//空表，返回1
+		return true;								//空表，返回1
 	else
-		return false;								//不空，返回0
+		return false;								//不空，返回0
 }


-//【算法2.24】										遍历表
+//【算法2.24】										遍历表
 template <class DT>
-void DispList(LNode<DT>* L)							// 显示表内容
+void DispList(LNode<DT>* L)							// 显示表内容
 {
-	LNode<DT>* p;									// 1. 设置工作指针
-	p = L;										// 从首元结点开始遍历
-	while (p->next)										// 2.依次输出各结点值
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L;										// 从首元结点开始遍历
+	while (p->next)										// 2.依次输出各结点值
 	{
 		p = p->next; cout << p->data << "\t";

--- a/Chapter2/2-3-SqListApp/SqList.h
+++ b/Chapter2/2-3-SqListApp/SqList.h
@@ -1,55 +1,55 @@
 template <class DT>
-struct SqList   //顺序表类
+struct SqList   //顺序表类
 {
-	DT* elem; //表首址
-	int length; //表长
-	int size;//表容量
+	DT* elem; //表首址
+	int length; //表长
+	int size;//表容量
 };

-//【算法2.2】
+//【算法2.2】
 template <class DT>
 bool InitList(SqList<DT>& L, int m)
-{//构建函数，创建一表容量为m的空表
-	L.elem = new DT[m];// 申请表空间
+{//构建函数，创建一表容量为m的空表
+	L.elem = new DT[m];// 申请表空间
 	if (L.elem == NULL)
 	{
-		cout << "未创建成功！";
+		cout << "未创建成功！";
 		exit(1);
 	}
-	L.length = 0;  // 空表，表长为0
-	L.size = m;    //表容量为m
+	L.length = 0;  // 空表，表长为0
+	L.size = m;    //表容量为m
 	return true;
 }

-//【算法2.3】
+//【算法2.3】
 template <class DT>
-bool CreateList(SqList<DT>& L, int n)  //创建表长度为n的顺序表
+bool CreateList(SqList<DT>& L, int n)  //创建表长度为n的顺序表
 {
 	int i;
 	if (n > L.size)
 	{
-		cout << "元素个数大于表长，不能创建！" << endl;
+		cout << "元素个数大于表长，不能创建！" << endl;
 		return false;
 	}
-	cout << "请依次输入" << n << "个元素值：" << endl;
+	cout << "请依次输入" << n << "个元素值：" << endl;
 	for (i = 1; i <= n; i++)
 		cin >> L.elem[i - 1];
 	L.length = n;
 	return true;
 }

-//【算法2.4】
+//【算法2.4】
 template <class DT>
-void DestroyList(SqList<DT>& L) //销毁顺序表，释放表空间
+void DestroyList(SqList<DT>& L) //销毁顺序表，释放表空间
 {
 	delete[] L.elem;
 	L.length = 0;
 	L.size = 0;
 }

-//【算法2.5】
+//【算法2.5】
 template<class DT>
-bool GetElem_i(SqList<DT> L, int i, DT& e)// 获取第i个元素值
+bool GetElem_i(SqList<DT> L, int i, DT& e)// 获取第i个元素值
 {
 	if (i<0 || i>L.length)
 		return false;
@@ -57,60 +57,60 @@ bool GetElem_i(SqList<DT> L, int i, DT& e)//
 	return true;
 }

-//【算法2.6】
+//【算法2.6】
 template<class DT>
-int LocateElem_e(SqList<DT> L, DT e) // 按值查找
+int LocateElem_e(SqList<DT> L, DT e) // 按值查找
 {
 	int i;
-	for (i = 0; i < L.length; i++)  // 顺序查找
-		if (L.elem[i] == e)   // 找到
+	for (i = 0; i < L.length; i++)  // 顺序查找
+		if (L.elem[i] == e)   // 找到
 			return i + 1;
-	return 0;    // 未找到
+	return 0;    // 未找到
 }

-//【算法2.7】
+//【算法2.7】
 template<class DT>
-bool InsertElem_i(SqList<DT>& L, int i, DT e) // 在第i个位置插入新元素
+bool InsertElem_i(SqList<DT>& L, int i, DT e) // 在第i个位置插入新元素
 {
 	int j;
-	if (L.length >= L.size)              //1.表满，不能插入
+	if (L.length >= L.size)              //1.表满，不能插入
 		return false;
-	if (i<1 || i>L.length + 1)          //2.插入位置不合理，不能插入
+	if (i<1 || i>L.length + 1)          //2.插入位置不合理，不能插入
 		return false;
-	for (j = L.length; j >= i; j--)  //3. an~ai依次后移
+	for (j = L.length; j >= i; j--)  //3. an~ai依次后移
 		L.elem[j] = L.elem[j - 1];
 	L.elem[i - 1] = e;
 	L.length++;
-	return true;    // 插入成功，返回true
+	return true;    // 插入成功，返回true
 }

-//【算法2.8】
+//【算法2.8】
 template<class DT>
-bool DeleElem_i(SqList<DT>& L, int i) // 删除第i个元素
+bool DeleElem_i(SqList<DT>& L, int i) // 删除第i个元素
 {
 	int j;
-	if (L.length == 0)                //1.表空，不能删除
+	if (L.length == 0)                //1.表空，不能删除
 		return false;
-	if (i<1 || i>L.length)          //2.删除位置不合理，不能插入
+	if (i<1 || i>L.length)          //2.删除位置不合理，不能插入
 		return false;
-	for (j = i; j < L.length; j++)  //3. ai~an依次前移
+	for (j = i; j < L.length; j++)  //3. ai~an依次前移
 		L.elem[j - 1] = L.elem[j];
 	L.length--;
-	return true;                    // 删除成功，返回true
+	return true;                    // 删除成功，返回true
 }


-//【算法2.9】
+//【算法2.9】
 template<class DT>
-bool PutElem(SqList<DT>& L, int i, DT e) // 修改第i个元素的值
+bool PutElem(SqList<DT>& L, int i, DT e) // 修改第i个元素的值
 {
-	if (i<1 || i>L.length)               //1.位置不合理，不能修改
+	if (i<1 || i>L.length)               //1.位置不合理，不能修改
 		return false;
-	L.elem[i - 1] = e;                     //2.重置第i个元素值
-	return true;                       //3.修改成功，返回true
+	L.elem[i - 1] = e;                     //2.重置第i个元素值
+	return true;                       //3.修改成功，返回true
 }

-//清空顺序表
+//清空顺序表
 template<class DT>
 void ClearList(SqList<DT>& L)
 {
@@ -118,14 +118,14 @@ void ClearList(SqList<DT>& L)
 }


-//测表长
+//测表长
 template<class DT>
 int ListLength(SqList<DT> L)
 {
 	return L.length;
 }

-//测表空
+//测表空
 template<class DT>
 bool ListEmpty(SqList<DT> L)
 {
@@ -135,7 +135,7 @@ bool ListEmpty(SqList<DT> L)
 		return false;
 }

-//测表满
+//测表满
 template<class DT>
 bool ListFull(SqList<DT> L)
 {
@@ -145,9 +145,9 @@ bool ListFull(SqList<DT> L)
 		return false;
 }

-//【算法2.10】
+//【算法2.10】
 template <class DT>
-void DispList(SqList<DT> L)  //遍历输出
+void DispList(SqList<DT> L)  //遍历输出
 {
 	int i;
 	for (i = 0; i < L.length; i++)
--- a/Chapter2/2-3-SqListApp/SqListApp.cpp
+++ b/Chapter2/2-3-SqListApp/SqListApp.cpp
@@ -1,4 +1,4 @@
-// 2-3-SqListApp-顺序表应用
+// 2-3-SqListApp-顺序表应用

 #include<iostream>//cout,cin
 using namespace std;
@@ -7,35 +7,35 @@ using namespace std;
 char pause;

 void dispmenu()
-{														// 显示主菜单
-	cout << "\n*** 顺序表的应用 ***\n";
-	cout << " 1-集合并A=A∪B\n";
-	cout << " 2-顺序表逆置\n";
-	cout << " 3-多项式求和\n";
-	cout << " 0-退出\n";
+{														// 显示主菜单
+	cout << "\n*** 顺序表的应用 ***\n";
+	cout << " 1-集合并A=A∪B\n";
+	cout << " 2-顺序表逆置\n";
+	cout << " 3-多项式求和\n";
+	cout << " 0-退出\n";
 }


-//算法2.11
+//算法2.11
 template <class DT>
-void Union(SqList<DT>& La, SqList<DT> Lb)				// 求La=La∪La
+void Union(SqList<DT>& La, SqList<DT> Lb)				// 求La=La∪La
 {
 	DT e;
 	int k, i;
-	for (i = 1; i <= Lb.length; i++)						// 扫描Lb
+	for (i = 1; i <= Lb.length; i++)						// 扫描Lb
 	{
-		GetElem_i(Lb, i, e);								// 1. 获取Lb的第i个元素
-		if (!LocateElem_e(La, e))							// 2.如果La中无此元素
+		GetElem_i(Lb, i, e);								// 1. 获取Lb的第i个元素
+		if (!LocateElem_e(La, e))							// 2.如果La中无此元素
 		{
-			k = La.length + 1;								// 添加在La的表尾
+			k = La.length + 1;								// 添加在La的表尾
 			InsertElem_i(La, k, e);
 		}
 	}
 }

-//算法2.12
+//算法2.12
 template <class DT>
-void ReverseSqList(SqList<DT>& L)						// 顺序表元素逆置
+void ReverseSqList(SqList<DT>& L)						// 顺序表元素逆置
 {
 	DT t;
 	int i;
@@ -48,28 +48,28 @@ void ReverseSqList(SqList<DT>& L)						// ˳
 	return;
 }

-//算法2.13												多项式求和 lc=la+lb
+//算法2.13												多项式求和 lc=la+lb
 void PolyAdd(SqList<float> la, SqList<float> lb, SqList<float>& lc)
 {
-	int i = 0;											// 1.初始化，设置处理起始位置
-	while (i < la.length && i < lb.length)					// 2.两个多项式均未处理完
+	int i = 0;											// 1.初始化，设置处理起始位置
+	while (i < la.length && i < lb.length)					// 2.两个多项式均未处理完
 	{
-		lc.elem[i] = la.elem[i] + lb.elem[i];				// 相同位序上的系数相加
+		lc.elem[i] = la.elem[i] + lb.elem[i];				// 相同位序上的系数相加
 		i++;

 	}
-	if (la.length > lb.length)								// 3.la未处理完，lb已处理完
+	if (la.length > lb.length)								// 3.la未处理完，lb已处理完
 	{
-		while (i < la.length)								// lc取la中剩余项
+		while (i < la.length)								// lc取la中剩余项
 		{
 			lc.elem[i] = la.elem[i];
 			i++;

 		}
 	}
-	else												// 3.lb未处理完，la已处理完
+	else												// 3.lb未处理完，la已处理完
 	{
-		while (i < lb.length)								// lc取lb中剩余项
+		while (i < lb.length)								// lc取lb中剩余项
 		{
 			lc.elem[i] = lb.elem[i];
 			i++;
@@ -78,7 +78,7 @@ void PolyAdd(SqList<float> la, SqList<float> lb, SqList<float>& lc)
 	}
 }

-//显示多顶式
+//显示多顶式
 void DispPoly(float A[], int n)
 {
 	int i;
@@ -91,95 +91,95 @@ void DispPoly(float A[], int n)



-//主函数
+//主函数
 int main()
 {
 	int e;
 	int na, nb, nc;
-	SqList<int> La, Lb;										// 集合A、B
-	SqList<int> Lc;											// 顺序表
-	SqList<float> fa, fb, fc;									// 多项式A、B、C
+	SqList<int> La, Lb;										// 集合A、B
+	SqList<int> Lc;											// 顺序表
+	SqList<float> fa, fb, fc;									// 多项式A、B、C

-	system("cls");											// 清屏
+	system("cls");											// 清屏

 	int choice;
 	do
 	{
-		dispmenu();											// 显示主菜单
-		cout << "Enter choice(1~4,0退出):";
+		dispmenu();											// 显示主菜单
+		cout << "Enter choice(1~4,0退出):";
 		cin >> choice;
 		switch (choice)
 		{
-		case 1:											// 求集合并
-			cout << "创建集合A、B\n";
-			cout << "输入集合A元素个数：";
+		case 1:											// 求集合并
+			cout << "创建集合A、B\n";
+			cout << "输入集合A元素个数：";
 			cin >> na;
-			cout << "输入集合B元素个数：";
+			cout << "输入集合B元素个数：";
 			cin >> nb;
-			InitList(La, na + nb);							// 创建集合A
-			cout << "创建集合A的元素\n";
+			InitList(La, na + nb);							// 创建集合A
+			cout << "创建集合A的元素\n";
 			CreateList(La, na);
-			InitList(Lb, nb);							// 创建集合B
-			cout << "创建集合B的元素\n";
+			InitList(Lb, nb);							// 创建集合B
+			cout << "创建集合B的元素\n";
 			CreateList(Lb, nb);
-			cout << "集合A为：" << endl;					// 显示集合A
+			cout << "集合A为：" << endl;					// 显示集合A
 			DispList(La);
-			cout << "集合B为：" << endl;					// 显示集合B
+			cout << "集合B为：" << endl;					// 显示集合B
 			DispList(Lb);
-			Union(La, Lb);								// 求集合并
-			cout << "A∪B为:" << endl;						// 显示结果
+			Union(La, Lb);								// 求集合并
+			cout << "A∪B为:" << endl;						// 显示结果
 			DispList(La);
 			cout << endl;
 			DestroyList(La);
 			DestroyList(Lb);
 			break;

-		case 2:											// 顺序表逆置
-			cout << "请输入要创建的顺序表中元素个数:";
+		case 2:											// 顺序表逆置
+			cout << "请输入要创建的顺序表中元素个数:";
 			cin >> nc;
 			InitList(Lc, nc);
 			cout << endl;
 			CreateList(Lc, nc);
-			cout << "创建的顺序表为：" << endl;				// 显示集合A
+			cout << "创建的顺序表为：" << endl;				// 显示集合A
 			DispList(Lc);
 			ReverseSqList(Lc);
-			cout << "逆置后的顺序表为：" << endl;			// 显示集合A
+			cout << "逆置后的顺序表为：" << endl;			// 显示集合A
 			DispList(Lc);
 			cout << endl;
 			DestroyList(Lc);
 			break;
-		case 3:											//多项式求和
-			cout << "\n创建多项式A\n";						// 创建多项式A
-			cout << "输入多项式A的项数：";
+		case 3:											//多项式求和
+			cout << "\n创建多项式A\n";						// 创建多项式A
+			cout << "输入多项式A的项数：";
 			cin >> na;
 			InitList(fa, na);
-			cout << "按幂升序输入多项式A各项系数\n";
+			cout << "按幂升序输入多项式A各项系数\n";
 			CreateList(fa, na);
-			cout << "\n创建多项式B\n";						// 创建多项式B
-			cout << "输入多项式B的项数：";
+			cout << "\n创建多项式B\n";						// 创建多项式B
+			cout << "输入多项式B的项数：";
 			cin >> nb;
 			InitList(fb, nb);
-			cout << "按幂升序输入多项式B各项系数\n";
+			cout << "按幂升序输入多项式B各项系数\n";
 			CreateList(fb, nb);
-			cout << "\n多项式 A 为 ：" << endl;				// 显示多项式A
+			cout << "\n多项式 A 为 ：" << endl;				// 显示多项式A
 			DispPoly(fa.elem, na);
-			cout << "\n多项式 B 为 ：" << endl;				// 显示多项式B
+			cout << "\n多项式 B 为 ：" << endl;				// 显示多项式B
 			DispPoly(fb.elem, nb);
 			nc = (na >= nb) ? na : nb;
-			InitList(fc, nc);							// 创建多项式C
-			PolyAdd(fa, fb, fc);							// 求多项式 C=A+B
-			cout << "\n多项式A + 多项式B = " << endl;		// 显示结果
+			InitList(fc, nc);							// 创建多项式C
+			PolyAdd(fa, fb, fc);							// 求多项式 C=A+B
+			cout << "\n多项式A + 多项式B = " << endl;		// 显示结果
 			DispPoly(fc.elem, nc);
 			cout << endl;
 			DestroyList(fa);
 			DestroyList(fb);
 			DestroyList(fc);
 			break;
-		case 0:											// 退出
-			cout << " 结束运行bye-bye!" << endl;
+		case 0:											// 退出
+			cout << " 结束运行bye-bye!" << endl;
 			break;
-		default:										// 无效选择
-			cout << "无效选择!\n";
+		default:										// 无效选择
+			cout << "无效选择!\n";
 			break;
 		}
 	} while (choice != 0);
--- a/Chapter2/2-4-PolyAdd/PolyAdd.cpp
+++ b/Chapter2/2-4-PolyAdd/PolyAdd.cpp
@@ -1,33 +1,33 @@
-// 2-4-PolyAdd-稀疏多项式求和
+// 2-4-PolyAdd-稀疏多项式求和
 // WARNING: /sdl is disabled to pass the compilation process.

 #include<iostream>//cout,cin
 using namespace std;

-struct PolyNode											// 多项式结点
+struct PolyNode											// 多项式结点
 {
-	float coef;											// 系数
-	int exp;											// 指数
-	PolyNode* next;										// 指向下一项结点
+	float coef;											// 系数
+	int exp;											// 指数
+	PolyNode* next;										// 指向下一项结点
 };

 void InitPoly(PolyNode*& L)
-{ //创建一空多项式
+{ //创建一空多项式
 	L = new PolyNode;
 	L->next = NULL;
 }

-bool CreatePoly(PolyNode*& L, int n)                   // 尾插法创建n项多项式
+bool CreatePoly(PolyNode*& L, int n)                   // 尾插法创建n项多项式
 {
 	int i;
 	PolyNode* p, * s;
 	p = L;
-	for (i = 1; i <= n; i++)                           // 按幂升序依次输入多项式各项系数与幂指数
+	for (i = 1; i <= n; i++)                           // 按幂升序依次输入多项式各项系数与幂指数
 	{
 		s = new PolyNode;
 		if (!s)
 			return false;
-		cout << "输入第" << i << "项系数和幂指数：";
+		cout << "输入第" << i << "项系数和幂指数：";
 		cin >> s->coef >> s->exp;
 		s->next = p->next;
 		p->next = s;
@@ -37,13 +37,13 @@ bool CreatePoly(PolyNode*& L, int n)                   // β
 }


-//显示多顶式
-void DispPoly(PolyNode* L)								// 通过遍历结点，输出多项式
+//显示多顶式
+void DispPoly(PolyNode* L)								// 通过遍历结点，输出多项式
 {
 	PolyNode* p;
-	if (!L)  // 空表，返回
+	if (!L)  // 空表，返回
 	{
-		cout << "空表!";
+		cout << "空表!";
 		return;
 	}
 	p = L->next;
@@ -56,100 +56,100 @@ void DispPoly(PolyNode* L)								// ͨ
 	cout << endl;
 }

-//【算法2.26】											求多项式LA=LA+LB
+//【算法2.26】											求多项式LA=LA+LB
 void PolyAdd(PolyNode*& LA, PolyNode*& LB)
 {
 	float sum;
-	PolyNode* pa, * pb, * qa, * qb;							// 1.工作指针初始化
+	PolyNode* pa, * pb, * qa, * qb;							// 1.工作指针初始化
 	pa = LA;
 	qa = pa->next;
 	pb = LB;
 	qb = pb->next;
-	while (qa != NULL && qb != NULL)						// 2. 两表均不空
+	while (qa != NULL && qb != NULL)						// 2. 两表均不空
 	{
-		if (qa->exp < qb->exp)							// 2.1 LA的幂小
-		{												// pa、qa后移
+		if (qa->exp < qb->exp)							// 2.1 LA的幂小
+		{												// pa、qa后移
 			pa = qa; qa = qa->next;
 		}
-		else if (qa->exp > qb->exp)					//2.2 LA 幂大
+		else if (qa->exp > qb->exp)					//2.2 LA 幂大
 		{
-			pb->next = qb->next;							// qb链接到pa之后
+			pb->next = qb->next;							// qb链接到pa之后
 			qb->next = qa;
 			pa->next = qb;
 			pa = qb;
 			qb = pb->next;
 		}
-		else												// 2.3 LA与LB幂相同
+		else												// 2.3 LA与LB幂相同
 		{
-			sum = qa->coef + qb->coef;						// 计算系数和
-			if (sum != 0)									// 2.3.1 系数和不为0
+			sum = qa->coef + qb->coef;						// 计算系数和
+			if (sum != 0)									// 2.3.1 系数和不为0
 			{
-				qa->coef = sum;							// 2.3.1.1 qa->coef←sum
-				pa = qa; qa = qa->next;						// 2.3.1.2 pa，qa后移
+				qa->coef = sum;							// 2.3.1.1 qa->coef←sum
+				pa = qa; qa = qa->next;						// 2.3.1.2 pa，qa后移
 				pb->next = qb->next;
-				delete qb;								// 2.3.1.3删除qb，
+				delete qb;								// 2.3.1.3删除qb，
 				qb = pb->next;
 			}
-			else										// 2.3.2 系数和为0
+			else										// 2.3.2 系数和为0
 			{
 				pa->next = qa->next;
-				delete qa;								// 2.3.2.1 删除qa，
-				qa = pa->next;								// 2.3.2.2 qa为pa后继；
+				delete qa;								// 2.3.2.1 删除qa，
+				qa = pa->next;								// 2.3.2.2 qa为pa后继；
 				pb->next = qb->next;
-				delete qb;								// 2.3.2.3 删除qb
-				qb = pb->next;								// 2.3.2.4 qb为pb的后继
+				delete qb;								// 2.3.2.3 删除qb
+				qb = pb->next;								// 2.3.2.4 qb为pb的后继
 			}
 		}
 	}//while
-	if (qb != NULL)											// 3. LA处理结束，LB未结束
-		pa->next = qb;										// 3.1 qb链到qa之后
-	delete pb;											// 3.2 删除lb头结点
+	if (qb != NULL)											// 3. LA处理结束，LB未结束
+		pa->next = qb;										// 3.1 qb链到qa之后
+	delete pb;											// 3.2 删除lb头结点
 	LB = NULL;

 }//Add


-void DestroyPoly(PolyNode*& L)							// 释放链表所占空间
+void DestroyPoly(PolyNode*& L)							// 释放链表所占空间
 {
 	PolyNode* p;
-	while (L)											// 从头结点开始，依次释放结点
+	while (L)											// 从头结点开始，依次释放结点
 	{
 		p = L;
 		L = L->next;
 		delete p;
 	}
-	L = NULL;												// 头结点指向空
+	L = NULL;												// 头结点指向空
 }

-void SortPoly(PolyNode*& L)						// 将多项式按幂升序排序
+void SortPoly(PolyNode*& L)						// 将多项式按幂升序排序
 {
-	PolyNode* p1, * p2, * q, * r;					// 采用插入排序算法
-	p1 = L; p2 = p1->next;						// p1是p2的前驱
-	if (p2 == NULL || p2->next == NULL)		// 空表或只有1项的多项式，不需要排序
+	PolyNode* p1, * p2, * q, * r;					// 采用插入排序算法
+	p1 = L; p2 = p1->next;						// p1是p2的前驱
+	if (p2 == NULL || p2->next == NULL)		// 空表或只有1项的多项式，不需要排序
 	{
-		cout << "不需要排序!" << endl;
+		cout << "不需要排序!" << endl;
 		return;
 	}
-	r = L->next;								// 有序表表尾
-	q = r->next;								// q为当前处理项，有序表的后一项
-	while (q)								// 未处理完
-	{										// 从首元结点开始查找插入点
+	r = L->next;								// 有序表表尾
+	q = r->next;								// q为当前处理项，有序表的后一项
+	while (q)								// 未处理完
+	{										// 从首元结点开始查找插入点
 		p1 = L; p2 = p1->next;
-		while (q->exp > p2->exp && p2 != q)    // 当前结点幂大，插入点后移
+		while (q->exp > p2->exp && p2 != q)    // 当前结点幂大，插入点后移
 		{
 			p1 = p2; p2 = p2->next;
 		}
-		if (p2 == q)					// 当前项无需移动
+		if (p2 == q)					// 当前项无需移动
 		{
-			r = q;					// 有序表表尾顺移
+			r = q;					// 有序表表尾顺移
 		}
-		else						// q插入到p2前面
+		else						// q插入到p2前面
 		{
-			r->next = q->next;		// 摘除q结点
-			q->next = p1->next;				// 在p1后插入结点q	
+			r->next = q->next;		// 摘除q结点
+			q->next = p1->next;				// 在p1后插入结点q	
 			p1->next = q;
 		}
-		q = r->next;				// 下一个需处理的项
+		q = r->next;				// 下一个需处理的项

 	}
 	return;
@@ -158,81 +158,81 @@ void SortPoly(PolyNode*& L)						//


 void dispmenu()
-{//显示主菜单
+{//显示主菜单
 	cout << endl;
-	cout << "*** 稀疏多项式求和 ***\n";
-	cout << "1-创建多项式A\n";
-	cout << "2-创建多项式B\n";
-	cout << "3-多项式求和A=A+B\n";
-	cout << "4-显示多项式\n";
-	cout << "0-退出\n";
+	cout << "*** 稀疏多项式求和 ***\n";
+	cout << "1-创建多项式A\n";
+	cout << "2-创建多项式B\n";
+	cout << "3-多项式求和A=A+B\n";
+	cout << "4-显示多项式\n";
+	cout << "0-退出\n";
 }

-//主函数
+//主函数
 int main()
 {
 	int m, n;
 	char c;
 	PolyNode* LA, * LB;
-	system("cls");											// 执行系统命令cls，清屏
+	system("cls");											// 执行系统命令cls，清屏

 	int choice;
 	do
 	{
-		dispmenu();											// 显示主菜单
-		cout << "Enter choice(1~4,0 退出):";
+		dispmenu();											// 显示主菜单
+		cout << "Enter choice(1~4,0 退出):";
 		cin >> choice;
 		switch (choice)
 		{
-		case 1:											// 创建多项式A
+		case 1:											// 创建多项式A
 			InitPoly(LA);
-			cout << "请输入多项式 A 的项数： ";
+			cout << "请输入多项式 A 的项数： ";
 			cin >> m;
 			CreatePoly(LA, m);
-			cout << "创建的多项式 A 为：" << endl;
+			cout << "创建的多项式 A 为：" << endl;
 			DispPoly(LA);
 			SortPoly(LA);
-			cout << "排序后多项式 A 为：" << endl;
+			cout << "排序后多项式 A 为：" << endl;
 			DispPoly(LA);
 			break;
-		case 2:											// 创建多项式B
+		case 2:											// 创建多项式B
 			InitPoly(LB);
-			cout << "请输入多项式B的项数： ";
+			cout << "请输入多项式B的项数： ";
 			cin >> n;
 			CreatePoly(LB, n);
-			cout << "创建的多项式B为：" << endl;
+			cout << "创建的多项式B为：" << endl;
 			DispPoly(LB);
 			SortPoly(LB);
-			cout << "排序后多项式 B 为：" << endl;
+			cout << "排序后多项式 B 为：" << endl;
 			DispPoly(LB);
 			break;
-		case 3:											//多项式求和
+		case 3:											//多项式求和
 			cout << "A = ";
 			DispPoly(LA);
 			cout << "B = ";
 			DispPoly(LB);
-			PolyAdd(LA, LB);								// 求多项式 LA=LA+LB
-			cout << "A + B = ";			// 显示结果
+			PolyAdd(LA, LB);								// 求多项式 LA=LA+LB
+			cout << "A + B = ";			// 显示结果
 			DispPoly(LA);
 			cout << endl;
 			break;
-		case 4:											// 显示多项式
-			cout << "选择要显示的多项式 A 或 B：" << endl;
+		case 4:											// 显示多项式
+			cout << "选择要显示的多项式 A 或 B：" << endl;
 			cin >> c;
 			if (c == 'A' || c == 'a')
 				DispPoly(LA);
 			else if (c == 'B' || c == 'b')
 				DispPoly(LB);
 			else
-				cout << "选择错误！" << endl;
+				cout << "选择错误！" << endl;
 			break;
-		case 5:											//退出
+		case 5:											//退出
 			DestroyPoly(LA);
 			DestroyPoly(LB);
-			cout << "结束运行bye-bye!" << endl;
+			cout << "结束运行bye-bye!" << endl;
 			break;
-		default:										//非法选择
-			cout << "非法选择!\n";
+		default:										//非法选择
+			cout << "非法选择!\n";
 			break;
 		}
 	} while (choice != 0);
--- a/Chapter2/2-5-ReverseLinkList/2-5-ReverseLinkList.vcxproj
+++ b/Chapter2/2-5-ReverseLinkList/2-5-ReverseLinkList.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{0b0a9a4c-185a-4345-bd4e-1e48565907e2}</ProjectGuid>
+    <RootNamespace>My25ReverseLinkList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="ReverseLinkList.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter2/2-5-ReverseLinkList/2-5-ReverseLinkList.vcxproj.filters
+++ b/Chapter2/2-5-ReverseLinkList/2-5-ReverseLinkList.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="ReverseLinkList.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
--- a/Chapter2/2-5-ReverseLinkList/LinkList.h
+++ b/Chapter2/2-5-ReverseLinkList/LinkList.h
@@ -0,0 +1,237 @@
+
+template <class DT>
+struct LNode										//链表结点
+{
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
+};
+
+
+//【算法2.14】										创建空单链表
+template <class DT>
+bool InitList(LNode<DT>*& L)
+{
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
+}
+
+//【算法2.15】										尾插法创建n的元素
+template <class DT>
+bool CreateList_1(LNode<DT>*& L, int n)
+{
+	LNode<DT>* p, * s;
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (int i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	{
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
+		p->next = s;
+		p = s;										// 2.5 工作指针指向 s
+	}
+	return true;									// 3.创建成功，返回true
+}
+
+//【算法2.16】										头插法创建n个元素
+template <class DT>
+bool CreateList_2(LNode<DT>* (&L), int n)
+{
+	LNode<DT>* s;
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (int i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	{
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
+		L->next = s;
+	}
+	return true;									// 1.创建成功，返回true
+}
+
+//【算法2.17】
+template <class DT>
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+{
+	LNode<DT>* p;
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	{
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
+	}
+	L = NULL;											// 2.头指针指向空
+}
+
+//【算法2.18】										获取第i个元素
+template<class DT>
+bool GetElem_i(LNode<DT>* L, int i, DT& e)
+{
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始，数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)									// 3 未找到，返回false
+		return false;
+	else											// 4. 找到
+	{
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
+	}
+}
+
+//【算法2.19】										查找值为e的元素位序
+template<class DT>
+int LocateElem_e(LNode<DT>* L, DT e)
+{
+
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
+	{
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
+	}
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
+	else
+		return j;									// 3.2 找到，返回位序
+}
+
+//【算法2.20】										插入第i个元素
+template<class DT>
+bool InsertElem_i(LNode<DT>* (&L), int i, DT e)
+{
+
+	int j = 0;
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	{
+		p = p->next;//
+		j++;
+	}
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
+	{
+		LNode<DT>* s;
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		p->next = s;
+		return true;								// 3.2.4 插入成功，返回true
+	}
+
+}
+
+//【算法2.21】										删除第i个元素
+template<class DT>
+bool DeleElem_i(LNode<DT>* (&L), int i)
+{
+
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	{
+		p = p->next;   //
+		j++;
+	}
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
+	{
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
+		delete q;
+		return true;								//4.3删除成功，返回true
+	}
+}
+
+
+//【算法2.22】										修改第i个元素值
+template<class DT>
+bool PutElem_i(LNode<DT>* (&L), int i, DT e)
+{
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)										// 3.元素不存在,返回false
+		return false;
+	else											// 4.定位成功
+	{
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
+	}
+}
+
+// 释放链表所占空间
+template<class DT>
+void ClearList(LNode<DT>* (&L))
+{
+
+	LNode<DT>* p;
+	while (L->next)									// 从首元结点开始，依次释放结点
+	{
+		p = L->next;
+		L->next = p->next;
+		delete p;
+	}
+	cout << endl << "表已清空!" << endl;
+}
+
+
+//【算法2.23】										测表长
+template<class DT>
+int ListLength(LNode<DT>* L)
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
+	{
+		len++; p = p->next;							// 结点数增1，指针后移
+	}
+	return len;										// 3.返回表长
+}
+
+//
+template<class DT>
+bool ListEmpty(LNode<DT>* L)						//测表空
+{
+	if (L->next == NULL)
+		return true;								//空表，返回1
+	else
+		return false;								//不空，返回0
+}
+
+
+//【算法2.24】										遍历表
+template <class DT>
+void DispList(LNode<DT>* L)							// 显示表内容
+{
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L->next;										// 从首元结点开始遍历
+	while (p)										// 2.依次输出各结点值
+	{
+		cout << p->data << "\t";
+		p = p->next;
+
+	}
+	cout << endl;
+}
--- a/Chapter2/2-5-ReverseLinkList/ReverseLinkList.cpp
+++ b/Chapter2/2-5-ReverseLinkList/ReverseLinkList.cpp
@@ -0,0 +1,82 @@
+#include<iostream>     //cout,cin
+using namespace std;
+#include "LinkList.h"
+
+
+//算法2.25											单链表逆置
+void ReverseLinkList(LNode<int>*& L)
+{
+	LNode<int>* p, * q;								// 1.设置工作指针
+	p = L->next;										// 原链表头结点，作为逆置后表的头结点
+	L->next = NULL;
+	while (p)										// 2. 依次摘除原链表结点，以头插法插入到逆置链表中
+	{
+		q = p;										// 2.1 q取当前结点位置   
+		p = p->next;									// 2.2 p指向下一个待处理结点
+		q->next = L->next;							// 2.3 将q 插入到头结点之后
+		L->next = q;
+	}
+}
+
+
+
+void dispmenu()
+{//显示主菜单
+	cout << endl;
+	cout << "1-创建单链表\n";
+	cout << "2-逆置单链表\n";
+	cout << "3-显示单链表\n";
+	cout << "4-退出\n";
+}
+
+char pause;
+
+//主函数
+int main()
+{
+	int n;
+	//int e;
+	LNode<int>* L;
+	system("cls");									// 执行系统命令cls，清屏
+
+	int choice;
+	do
+	{
+		dispmenu();									// 显示主菜单
+		cout << "Enter choice(1~4):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:									// 创建单链表
+			InitList(L);
+			cout << "输入要创建元素个数:";
+			cin >> n;
+			cout << endl;
+			CreateList_1(L, n);
+			cout << "创建的单链表为：";
+			DispList(L);
+			cout << endl;
+			break;
+		case 2:									// 逆置单链表
+			ReverseLinkList(L);
+			cout << "逆置后的单链表为：";
+			DispList(L);
+			cout << endl;
+			break;
+		case 3:								// 显示表
+			DispList(L);
+			cout << endl;
+			cin.get(pause);
+			system("pause");
+			break;
+		case 4:									// 退出
+			DestroyList(L);
+			cout << "结束运行" << endl;
+			break;
+		default:								// 无效选择
+			cout << "Invalid choice\n";
+			break;
+		}
+	} while (choice != 4);
+	return 0;
+}//end of main function
--- a/Chapter2/Chapter2.sln
+++ b/Chapter2/Chapter2.sln
@@ -11,6 +11,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "2-3-SqListApp", "2-3-SqList
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "2-4-PolyAdd", "2-4-PolyAdd\2-4-PolyAdd.vcxproj", "{3BBBC9D3-2AEA-48CC-ABF7-908DA7982A0B}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "2-5-ReverseLinkList", "2-5-ReverseLinkList\2-5-ReverseLinkList.vcxproj", "{0B0A9A4C-185A-4345-BD4E-1E48565907E2}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -51,6 +53,14 @@ Global
 		{3BBBC9D3-2AEA-48CC-ABF7-908DA7982A0B}.Release|x64.Build.0 = Release|x64
 		{3BBBC9D3-2AEA-48CC-ABF7-908DA7982A0B}.Release|x86.ActiveCfg = Release|Win32
 		{3BBBC9D3-2AEA-48CC-ABF7-908DA7982A0B}.Release|x86.Build.0 = Release|Win32
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Debug|x64.ActiveCfg = Debug|x64
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Debug|x64.Build.0 = Debug|x64
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Debug|x86.ActiveCfg = Debug|Win32
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Debug|x86.Build.0 = Debug|Win32
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Release|x64.ActiveCfg = Release|x64
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Release|x64.Build.0 = Release|x64
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Release|x86.ActiveCfg = Release|Win32
+		{0B0A9A4C-185A-4345-BD4E-1E48565907E2}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
--- a/Chapter3/BracketsMatch/BracketsMatch.cpp
+++ b/Chapter3/BracketsMatch/BracketsMatch.cpp
@@ -0,0 +1,69 @@
+/***链栈实现括号匹配***/
+#include<string>
+#include<iostream>
+using namespace std;
+#include"LinkStack.h"
+
+//算法3.11												括号的匹配
+bool match(string exp)
+{
+	//检验表达式(表达式以"#"结束)中所含"["和"]"、"("和")"是否匹配，如果匹配，则返回true，否则返回false。
+	//表达式以“#”结束
+	SNode<char>* S;
+	InitStack(S);
+	int flag = 1;        								// 标记查找结果以控制循环及返回结果
+	char ch;
+	char e, x;
+	int i = 0;
+	ch = exp[i++];            								// 读入第一个字符
+	while (ch != '#' && flag)
+	{
+		switch (ch)
+		{
+		case '[':
+		case '(': 								// 若是左括号，则将其压入栈
+			cout << "左括号进栈！" << endl;
+			Push(S, ch);
+			break;
+		case ')':     							// 若是右括号“)”，则根据栈顶元素的值分情况考虑
+			GetTop(S, e);
+			if (!StackEmpty(S) && e == '(')		// 若栈非空且栈顶元素是“(”，则匹配成功
+			{
+				Pop(S, x);
+				cout << "右括号出栈！" << endl;
+			}
+			else
+				flag = 0;                 		// 若栈空或栈顶元素不是“(”，则非法
+			break;
+		case ']':								 // 若是右括号“]”，则根据栈顶元素的值分情况考虑
+			GetTop(S, e);
+			if (!StackEmpty(S) && e == '[')		// 若栈顶元素是“[”，则匹配成功
+				Pop(S, x);
+			else
+				flag = 0;                 		// 若栈空或栈顶元素不是“[”，则非法
+			break;
+		}//switch
+		ch = exp[i++];       								//继续读入下一个字符
+	}//while
+	if (StackEmpty(S) && flag)						// 栈空且标志为true,括号匹配，返回true
+		return true;
+	else											// 否则，括号不匹配,返回false
+		return false;
+}//match
+
+
+
+int main()
+{
+	int flag;
+	string exp;
+	cout << "请输入待匹配的表达式，以“#”结束：" << endl;
+	cin >> exp;
+	flag = match(exp);
+	if (flag)
+		cout << "括号匹配成功！" << endl;
+	else
+		cout << "括号匹配失败！" << endl;
+	return 0;
+}//end of main function
+
--- a/Chapter3/BracketsMatch/BracketsMatch.vcxproj
+++ b/Chapter3/BracketsMatch/BracketsMatch.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{bc507152-80ab-4a4f-9006-339728d357ca}</ProjectGuid>
+    <RootNamespace>BracketsMatch</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkStack.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="BracketsMatch.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter3/BracketsMatch/BracketsMatch.vcxproj.filters
+++ b/Chapter3/BracketsMatch/BracketsMatch.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkStack.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="BracketsMatch.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Chapter3/BracketsMatch/LinkStack.h
+++ b/Chapter3/BracketsMatch/LinkStack.h
@@ -0,0 +1,92 @@
+
+template <class DT>
+struct SNode  //结点
+{
+	DT data;     //数据域，存储数据元素值
+	SNode* next;//指针域，指向下一个结点
+};
+
+
+//【算法3.6】
+template <class DT>
+void InitStack(SNode<DT>*& S)//创建空链栈
+{
+	S = NULL;
+}
+
+//【算法3.7】
+template <class DT>
+void DestroyStack(SNode<DT>* (&S))//释放链栈
+{
+	SNode<DT>* p;
+	while (S)//从头结点开始，依次释放结点
+	{
+		p = S;
+		S = S->next;
+		delete p;
+	}
+	//L=NULL;//头结点指向空
+}
+
+//【算法3.8】
+template<class DT>
+bool Push(SNode<DT>*& S, DT e)
+{
+	SNode<DT>* p;
+	p = new SNode<DT>;
+	if (!p) return false;  //创建失败，结束运行
+	p->data = e;       // 新结点赋值
+	p->next = S;  //结点S链接到p结点之后
+	S = p;
+	return true;    // 插入成功，返回true
+}
+
+//【算法3.9】
+template<class DT>
+bool Pop(SNode<DT>*& S, DT& e)
+{
+	SNode<DT>* p;
+	if (S == NULL)  return false;
+	p = S;
+	e = p->data;
+	S = S->next;
+	delete p;
+	return true;    // 删除成功，返回true
+}
+
+
+//【算法3.10】
+template<class DT>
+bool GetTop(SNode<DT>* S, DT& e)
+{
+	SNode<DT>* p;
+	if (S == NULL)  return false;
+	p = S;
+	e = p->data;
+	return true;    // 删除成功，返回true
+}
+
+//测栈空
+template<class DT>
+bool StackEmpty(SNode<DT>* S)
+{
+	if (S == NULL)
+		return true;
+	else
+		return false;
+}
+
+//显示栈内容
+template<class DT>
+void DispStack(SNode<DT>* S)
+{
+	SNode<DT>* p;
+	p = S;
+	while (p)
+	{
+		cout << p->data << "\t";
+		p = p->next;
+	}
+	cout << endl;
+}
+
--- a/Chapter3/Chapter3.sln
+++ b/Chapter3/Chapter3.sln
@@ -0,0 +1,91 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
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+EndProject
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+EndProject
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+EndProject
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+EndProject
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+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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+		{85FF5098-D9C7-4D2E-B248-4C3E402AD373}.Debug|x86.Build.0 = Debug|Win32
+		{85FF5098-D9C7-4D2E-B248-4C3E402AD373}.Release|x64.ActiveCfg = Release|x64
+		{85FF5098-D9C7-4D2E-B248-4C3E402AD373}.Release|x64.Build.0 = Release|x64
+		{85FF5098-D9C7-4D2E-B248-4C3E402AD373}.Release|x86.ActiveCfg = Release|Win32
+		{85FF5098-D9C7-4D2E-B248-4C3E402AD373}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {30AB47D5-FA1A-476B-AB4B-39972632BC13}
+	EndGlobalSection
+EndGlobal
--- a/Chapter3/DancePartner/DancePartner.cpp
+++ b/Chapter3/DancePartner/DancePartner.cpp
@@ -0,0 +1,167 @@
+#include<iostream>
+#include<string>
+using namespace std;
+
+struct dancer							// 舞者信息
+{
+	string name;						// 姓名
+	char sex;							// 性别
+};
+
+
+struct Node								// 队列结点
+{
+	dancer data;						// 数据域
+	Node* next;							// 指针域，指向后继
+}*front, * rear;							// 队头、队尾										
+
+struct LinkQueue
+{
+	Node* front;
+	Node* rear;
+};											// 男队和女队
+
+void InitialLinkQueue(LinkQueue& Q)						// 初始化队列
+{
+	Q.front = new Node;
+	Q.front->next = NULL;
+	Q.rear = Q.front;
+}
+
+void DestroyLinkQueue(LinkQueue& Q)						// 销毁队列
+{
+	Node* p;
+	while (Q.front != NULL)
+	{
+		p = Q.front;
+		Q.front = Q.front->next;
+		delete p;
+	}
+}
+
+void EnQueue(LinkQueue& Q, dancer& e)					// 入队
+{
+	Node* s = new Node;
+	s->data = e;
+	s->next = Q.rear->next;
+	Q.rear->next = s;
+	Q.rear = s;
+}
+
+bool IsEmpty(LinkQueue Q)								// 判队空
+{
+	if (Q.front == Q.rear)
+		return true;
+	else
+		return false;
+}
+
+bool DeQueue(LinkQueue& Q, dancer& e)					// 出队
+{
+	Node* p;
+	if (IsEmpty(Q))										// 队空，
+	{
+		cout << "队列为空，无法出队列！";
+		return false;
+	}
+	p = Q.front->next;
+	e = p->data;
+	Q.front->next = p->next;
+	if (p == Q.rear)										// 只有一个元素，出队
+		Q.rear = Q.front;									// 修改队尾指针
+	delete p;
+	return true;
+}
+
+bool GetHead(LinkQueue Q, dancer& e)
+{
+	if (IsEmpty(Q)) 										// 队空
+	{
+		cout << "队列为空，无法取得队首元素！";
+		return false;
+	}
+	e = Q.front->next->data;								// 返回队头元素
+	return true;
+}
+
+void QueueTranverse(LinkQueue Q)							// 遍历队
+{
+	Node* p;
+	p = Q.front->next;
+	while (p != NULL)
+	{
+		cout << (p->data).name << " ";
+		p = p->next;
+	}
+	cout << endl;
+}
+
+void EntranHall(dancer person[], int num)					// 舞者入场
+{
+	int i;
+	for (i = 0; i < num; i++)
+	{
+		cout << "请输入第" << i + 1 << "个舞者性别(F(女) or M(男))及姓名:" << endl;
+		cin >> person[i].sex;
+		cin >> person[i].name;
+	}
+	cout << "现有舞者：" << endl;
+	for (i = 0; i < num; i++)
+	{
+		cout << i + 1 << ":" << person[i].sex
+			<< "," << person[i].name << endl;
+	}
+
+}
+
+
+//算法3.24
+void DancePartner(dancer person[], int num)
+{
+	dancer newdancer, m, f, p;
+	LinkQueue GenQueue;
+	LinkQueue LadyQueue;
+	InitialLinkQueue(GenQueue);							    // 初始化男队
+	InitialLinkQueue(LadyQueue);									    // 初始化女队
+	for (int i = 0; i < num; i++)										// 舞者入场
+	{
+		p = person[i];
+		if (p.sex == 'F')
+			EnQueue(LadyQueue, p);
+		else
+			EnQueue(GenQueue, p);
+	}
+	while ((!IsEmpty(GenQueue)) && (!IsEmpty(LadyQueue)))		// 匹配舞者
+	{
+		DeQueue(GenQueue, m);								// 女士出队
+		DeQueue(LadyQueue, f);								// 男士出队
+		cout << m.name << "<---配对--->" << f.name << endl;       // 男、女配队
+	}
+	if (!IsEmpty(GenQueue))
+	{
+		GetHead(GenQueue, m);
+		cout << m.name << "先生还在等着呢!" << endl;
+	}
+	else if (!IsEmpty(LadyQueue))
+	{
+		GetHead(LadyQueue, f);
+		cout << f.name << "女士还在等着呢!" << endl;
+	}
+	else
+		cout << "配对完美结束!" << endl;
+	DestroyLinkQueue(GenQueue);							// 销毁队列
+	DestroyLinkQueue(LadyQueue);
+}
+
+int main()
+{
+	dancer* person;
+	int num;
+	cout << "请输入舞伴总数量:" << endl;
+	cin >> num;
+	person = new dancer[num];
+	EntranHall(person, num);							// 舞者入场
+	DancePartner(person, num);							// 舞者匹配
+	return 0;
+}
+
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+++ b/Chapter3/DancePartner/DancePartner.vcxproj
@@ -0,0 +1,138 @@
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--- a/Chapter3/DancePartner/DancePartner.vcxproj.filters
+++ b/Chapter3/DancePartner/DancePartner.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
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+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
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+    <ClInclude Include="LinkQueue.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
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+    <ClCompile Include="DancePartner.cpp">
+      <Filter>源文件</Filter>
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+  </ItemGroup>
+</Project>
--- a/Chapter3/DancePartner/LinkQueue.h
+++ b/Chapter3/DancePartner/LinkQueue.h
@@ -0,0 +1,112 @@
+
+template <class DT>
+struct QNode  //结点
+{
+	DT data;     //数据域，存储数据元素值
+	QNode* next;//指针域，指向下一个结点
+};
+
+template<class DT>
+struct LinkQueue
+{
+	QNode<DT>* front;
+	QNode<DT>* rear;
+};
+
+
+//【算法3.19】
+template <class DT>
+void InitQueue(LinkQueue<DT>& Q)//创建空队列
+{
+	Q.front = new QNode<DT>;     //创建头结点
+	if (!Q.front) exit(1);  //创建失败，结束运行
+	Q.front->next = NULL;
+	Q.rear = Q.front;
+}
+
+//【算法3.20】
+template <class DT>
+void DestroyQueue(LinkQueue<DT>& Q)//释放链队
+{
+	QNode<DT>* p;
+	while (Q.front)//从头结点开始，依次释放结点
+	{
+		p = Q.front;
+		Q.front = Q.front->next;
+		delete p;
+	}
+}
+
+//【算法3.21】 入队
+template<class DT>
+bool EnQueue(LinkQueue<DT>& Q, DT e)
+{
+	QNode<DT>* p;
+	p = new QNode<DT>;         // 创建新结点
+	if (!p) return false;      // 创建失败，结束运行
+	p->data = e;               // 新结点赋值
+	p->next = NULL;            // 链在队尾
+	Q.rear->next = p;
+	Q.rear = p;
+	return true;             // 入队成功，返回true
+}
+
+//【算法3.22】 出队
+template<class DT>
+bool DeQueue(LinkQueue<DT>& Q, DT& e)
+{
+	QNode<DT>* p;
+	if (Q.front == Q.rear)  return false;     //队空，返回false
+	p = Q.front->next;                      // 取出队元素
+	e = p->data;
+	Q.front->next = p->next;                //队首元素出队
+	if (Q.rear == p)                         //只有一个元素时出队，
+		Q.rear = Q.front;                  // 修改队尾
+	delete p;
+	return true;                        // 出队成功，返回true
+}
+
+
+//【算法3.23】  取队头元素
+template<class DT>
+bool GetHead(LinkQueue<DT> Q, DT& e)
+{
+	if (Q.front == Q.rear)  return false;     // 队空，返回false
+	e = Q.front->next->data;
+	return true;                           // 删除成功，返回true
+}
+
+//取队尾元素
+template<class DT>
+bool GetTail(LinkQueue<DT> Q, DT& e)
+{
+	if (Q.front == Q.rear)             // 队空
+		return false;               // 返回false
+	e = Q.rear->data;                 // 获取队尾元素
+	return true;                    // 返回true
+}
+
+//测队空
+template<class DT>
+bool QueueEmpty(LinkQueue<DT> Q)
+{
+	if (Q.front == Q.rear)    // 队空
+		return true;       //返回true
+	else                  //非空
+		return false;    //返回false
+}
+
+//显示队列内容
+template<class DT>
+void DispQueue(LinkQueue<DT> Q)
+{
+	QNode<DT>* p;
+	p = Q.front->next;
+	while (p)
+	{
+		cout << p->data << "\t";
+		p = p->next;
+	}
+	cout << endl;
+}
+
--- a/Chapter3/LinkQueue/LinkQueue.cpp
+++ b/Chapter3/LinkQueue/LinkQueue.cpp
@@ -0,0 +1,108 @@
+#include<iostream>     //cout,cin
+using namespace std;
+#include "LinkQueue.h"
+
+void dispmenu()
+{//显示主菜单
+	cout << endl;
+	cout << "1-初始化链队\n";
+	cout << "2-元素入队\n";
+	cout << "3-元素出队\n";
+	cout << "4-取队头元素\n";
+	cout << "5-取队尾元素\n";
+	cout << "6-清空队\n";
+	cout << "7-测队空\n";
+	cout << "8-显示队列元素\n";
+	cout << "0-退出\n";
+}
+
+char pause;
+
+//主函数
+int main()
+{
+	int e;
+	LinkQueue<int> Q;
+	system("cls");											// 执行系统命令cls，清屏
+
+	int choice;
+	do
+	{
+		dispmenu();											// 显示主菜单
+		cout << "功能选择(1~8，0 退出):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:											// 初始化链队
+			InitQueue(Q);
+			cout << endl << "创建成功！" << endl;
+			break;
+		case 2:										//入队
+			cout << "输入要插入的元素值：" << endl;
+			cin >> e;
+			cout << endl;
+			if (EnQueue(Q, e))
+			{
+				cout << endl << "入队成功！队列元素为：" << endl;
+				DispQueue(Q);
+			}
+			else
+				cout << endl << "入队不成功！" << endl;
+			break;
+
+		case 3:												// 出队
+			if (DeQueue(Q, e))
+			{
+				cout << endl << "出队成功！出队元素为:" << e << endl;
+				cout << endl << "出队后，队列元素为：" << endl;
+				DispQueue(Q);
+			}
+			else
+				cout << endl << "队空，出队失败！" << endl;
+			break;
+
+		case 4:											// 获取队头元素
+			if (GetHead(Q, e))
+			{
+				cout << "队列元素为：" << endl;
+				DispQueue(Q);
+				cout << endl << "队头元素为:" << e << endl;
+			}
+			else
+				cout << endl << "队空！" << endl;
+			break;
+		case 5:											// 获取队尾元素
+			if (GetTail(Q, e))
+			{
+				cout << "队列元素为：" << endl;
+				DispQueue(Q);
+				cout << endl << "队尾元素为:" << e << endl;
+
+			}
+			else
+				cout << endl << "队空！" << endl;
+			break;
+		case 6:											// 清空队
+			ClearQueue(Q);
+			cout << endl << "队已空!" << endl;
+		case 7:											// 测队空
+			if (QueueEmpty(Q))
+				cout << endl << "空队！" << endl;
+			else
+				cout << endl << "不是空队！" << endl;
+			break;
+		case 8:											 // 查看队列元素
+			DispQueue(Q);
+			cout << endl;
+			break;
+		case 0:												 // 退出
+			DestroyQueue(Q);
+			cout << "结束运行Bye-bye!" << endl;
+			break;
+		default:											// 无效选择
+			cout << "无效选择!\n";
+			break;
+		}
+	} while (choice != 0);
+	return 0;
+}//end of main function
--- a/Chapter3/LinkQueue/LinkQueue.h
+++ b/Chapter3/LinkQueue/LinkQueue.h
@@ -0,0 +1,127 @@
+
+template <class DT>
+struct QNode  //结点
+{
+	DT data;     //数据域，存储数据元素值
+	QNode* next;//指针域，指向下一个结点
+};
+
+template<class DT>
+struct LinkQueue
+{
+	QNode<DT>* front;
+	QNode<DT>* rear;
+};
+
+
+//【算法3.19】
+template <class DT>
+void InitQueue(LinkQueue<DT>& Q)//创建空队列
+{
+	Q.front = new QNode<DT>;     //创建头结点
+	if (!Q.front) exit(1);  //创建失败，结束运行
+	Q.front->next = NULL;
+	Q.rear = Q.front;
+}
+
+//【算法3.20】
+template <class DT>
+void DestroyQueue(LinkQueue<DT>& Q)//释放链队
+{
+	QNode<DT>* p;
+	while (Q.front)//从头结点开始，依次释放结点
+	{
+		p = Q.front;
+		Q.front = Q.front->next;
+		delete p;
+	}
+	Q.rear = Q.front = NULL;
+}
+
+template <class DT>
+void ClearQueue(LinkQueue<DT>& Q)		// 清空链队
+{
+	QNode<DT>* p;
+	while (Q.front->next)				//从队头开始，依次释放结点
+	{
+		p = Q.front->next;
+		Q.front->next = p->next;
+		delete p;
+	}
+	Q.front->next = NULL;					//	空队
+	Q.rear = Q.front;
+}
+
+//【算法3.21】 入队
+template<class DT>
+bool EnQueue(LinkQueue<DT>& Q, DT e)
+{
+	QNode<DT>* p;
+	p = new QNode<DT>;         // 创建新结点
+	if (!p) return false;      // 创建失败，结束运行
+	p->data = e;               // 新结点赋值
+	p->next = NULL;            // 链在队尾
+	Q.rear->next = p;
+	Q.rear = p;
+	return true;             // 入队成功，返回true
+}
+
+//【算法3.22】 出队
+template<class DT>
+bool DeQueue(LinkQueue<DT>& Q, DT& e)
+{
+	QNode<DT>* p;
+	if (Q.front == Q.rear)  return false;     //队空，返回false
+	p = Q.front->next;                      // 取出队元素
+	e = p->data;
+	Q.front->next = p->next;                //队首元素出队
+	if (Q.rear == p)                         //只有一个元素时出队，
+		Q.rear = Q.front;                  // 修改队尾
+	delete p;
+	return true;                        // 出队成功，返回true
+}
+
+
+//【算法3.23】  取队头元素
+template<class DT>
+bool GetHead(LinkQueue<DT> Q, DT& e)
+{
+	if (Q.front == Q.rear)  return false;     // 队空，返回false
+	e = Q.front->next->data;
+	return true;                           // 删除成功，返回true
+}
+
+//取队尾元素
+template<class DT>
+bool GetTail(LinkQueue<DT> Q, DT& e)
+{
+	if (Q.front == Q.rear)             // 队空
+		return false;               // 返回false
+	e = Q.rear->data;                 // 获取队尾元素
+	return true;                    // 返回true
+}
+
+//测队空
+template<class DT>
+bool QueueEmpty(LinkQueue<DT> Q)
+{
+	if (Q.front == Q.rear)    // 队空
+		return true;       //返回true
+	else                  //非空
+		return false;    //返回false
+}
+
+//显示队列内容
+template<class DT>
+void DispQueue(LinkQueue<DT> Q)
+{
+	QNode<DT>* p;
+	p = Q.front->next;
+	while (p)
+	{
+		cout << p->data << "\t";
+		p = p->next;
+	}
+	cout << endl;
+}
+
--- a/Chapter3/LinkQueue/LinkQueue.vcxproj
+++ b/Chapter3/LinkQueue/LinkQueue.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
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+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{492abb97-962f-46e9-bb91-6300e9d12898}</ProjectGuid>
+    <RootNamespace>LinkQueue</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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+    <UseDebugLibraries>true</UseDebugLibraries>
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+    <CharacterSet>Unicode</CharacterSet>
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+    <ConfigurationType>Application</ConfigurationType>
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+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
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+    <ConfigurationType>Application</ConfigurationType>
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+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
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+  <ImportGroup Label="Shared">
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkQueue.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="LinkQueue.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter3/LinkQueue/LinkQueue.vcxproj.filters
+++ b/Chapter3/LinkQueue/LinkQueue.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
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+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
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+    <ClCompile Include="LinkQueue.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Chapter3/LinkStack/LinkStack.cpp
+++ b/Chapter3/LinkStack/LinkStack.cpp
@@ -0,0 +1,93 @@
+#include<iostream>     //cout,cin
+using namespace std;
+#include "LinkStack.h"
+
+
+void dispmenu()
+{//显示主菜单
+	cout << endl;
+	cout << "1-初始化链栈\n";
+	cout << "2-元素入栈\n";
+	cout << "3-元素出栈\n";
+	cout << "4-取栈顶元素\n";
+	cout << "5-清空栈\n";
+	cout << "6-测栈空\n";
+	cout << "7-显示栈元素\n";
+	cout << "0-退出\n";
+}
+
+//主函数
+int main()
+{
+	int e;
+	SNode<int>* S;
+	system("cls");                                       // 清屏
+	int choice;
+	do
+	{
+		dispmenu();                                         //显示主菜单
+		cout << "Enter choice(1~6，0 退出):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:                                        //初始化链栈
+			InitStack(S);
+			cout << endl << "创建成功！" << endl;
+			break;
+		case 2:                                        //入栈
+			cout << "输入要入栈的元素值：" << endl;
+			cin >> e;
+			cout << endl;
+			if (Push(S, e))
+			{
+				cout << endl << "入栈成功！栈中元素为：" << endl;
+				DispStack(S);
+			}
+			else
+				cout << endl << "入栈不成功！" << endl;
+			break;
+
+		case 3:                                         //出栈
+			if (Pop(S, e))
+			{
+				cout << endl << "出栈成功！出栈元素为:" << e << endl;
+				cout << "出栈后，栈中元素为" << endl;
+				DispStack(S);
+			}
+			else
+				cout << endl << "栈空，出栈失败！" << endl;
+			break;
+
+		case 4:                                       //获取栈顶元素
+			if (GetTop(S, e))
+			{
+				cout << endl << "栈顶元素为:" << e << endl;
+			}
+			else
+				cout << endl << "栈空！" << endl;
+			break;
+		case 5:									// 清空栈
+			DestroyStack(S);
+			cout << "栈已清空!" << endl;
+			break;
+		case 6:                                      //测栈空
+			if (StackEmpty(S))
+				cout << endl << "空栈！" << endl;
+			else
+				cout << endl << "不是空栈！" << endl;
+			break;
+		case 7:                                     //显示栈元素
+			DispStack(S);
+			cout << endl;
+			break;
+		case 0:                                     //退出
+			DestroyStack(S);
+			cout << "结束运行Bye-bye!" << endl;
+			break;
+		default:                                   //非法选择
+			cout << "无效选择!\n";
+			break;
+		}
+	} while (choice != 0);
+	return 0;
+}//end of main function
--- a/Chapter3/LinkStack/LinkStack.h
+++ b/Chapter3/LinkStack/LinkStack.h
@@ -0,0 +1,96 @@
+
+template <class DT>
+struct SNode			 // 结点
+{
+	DT data;			 // 数据域，存储数据元素值
+	SNode* next;		// 指针域，指向下一个结点
+};
+
+
+//【算法3.6】
+template <class DT>
+bool InitStack(SNode<DT>*& S)	    // 创建空链栈
+{
+	S = NULL;
+	return true;
+}
+
+//【算法3.7】
+template <class DT>
+void DestroyStack(SNode<DT>* (&S))	// 释放链栈所占内存
+{
+	SNode<DT>* p;
+	while (S)						//从头结点开始，依次释放结点
+	{
+		p = S;
+		S = S->next;
+		delete p;
+	}
+	S = NULL;
+}
+
+
+
+//【算法3.8】
+template<class DT>
+bool Push(SNode<DT>*& S, DT e)
+{
+	SNode<DT>* p;
+	p = new SNode<DT>;
+	if (!p)
+		return false;  //创建失败，结束运行
+	p->data = e;       // 新结点赋值
+	p->next = S;  //结点S链接到p结点之后
+	S = p;
+	return true;    // 插入成功，返回true
+}
+
+//【算法3.9】
+template<class DT>
+bool Pop(SNode<DT>*& S, DT& e)
+{
+	SNode<DT>* p;
+	if (S == NULL)  return false;
+	p = S;
+	e = p->data;
+	S = S->next;
+	delete p;
+	return true;    // 删除成功，返回true
+}
+
+
+//【算法3.10】
+template<class DT>
+bool GetTop(SNode<DT>* S, DT& e)
+{
+	SNode<DT>* p;
+	if (S == NULL)  return false;
+	p = S;
+	e = p->data;
+	return true;    // 删除成功，返回true
+}
+
+//测栈空
+template<class DT>
+bool StackEmpty(SNode<DT>* S)
+{
+	if (S == NULL)
+		return true;
+	else
+		return false;
+}
+
+//显示栈内容
+template<class DT>
+void DispStack(SNode<DT>* S)
+{
+	SNode<DT>* p;
+	p = S;
+	while (p)
+	{
+		cout << p->data << "\t";
+		p = p->next;
+	}
+	cout << endl;
+}
+
--- a/Chapter3/LinkStack/LinkStack.vcxproj
+++ b/Chapter3/LinkStack/LinkStack.vcxproj
@@ -0,0 +1,138 @@
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+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
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+    </ProjectConfiguration>
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+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
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+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
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+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{3682e867-34c4-4beb-8224-fca94badaaf5}</ProjectGuid>
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+    <CharacterSet>Unicode</CharacterSet>
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+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
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+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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+      <SDLCheck>true</SDLCheck>
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+      <ConformanceMode>true</ConformanceMode>
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+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkStack.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="LinkStack.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter3/LinkStack/LinkStack.vcxproj.filters
+++ b/Chapter3/LinkStack/LinkStack.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkStack.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="LinkStack.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Chapter3/SqQueue/SqQueue.cpp
+++ b/Chapter3/SqQueue/SqQueue.cpp
@@ -0,0 +1,126 @@
+
+#include<iostream>//cout,cin
+using namespace std;
+#include "SqQueue.h"
+
+char pause;
+
+
+void dispmenu()						//菜单
+{
+	cout << endl;
+	cout << "1-初始化顺序队列\n";
+	cout << "2-元素入队\n";
+	cout << "3-元素出队\n";
+	cout << "4-取队头元素\n";
+	cout << "5-取队尾元素\n";
+	cout << "6-清空队\n";
+	cout << "7-测队空\n";
+	cout << "8-测队满\n";
+	cout << "9-显示队列元素\n";
+	cout << "10-显示队头、队尾指针\n";
+	cout << "0-退出\n";
+}
+
+
+//主函数
+int main()
+{
+	int i;
+	int e;
+	SqQueue<int> Q;									// 元素类型为整型的顺序队列
+	system("cls");									// 清屏
+	int choice;
+	do
+	{
+		dispmenu();									//显示主菜单
+		cout << "功能选择(1~10，0 退出！):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:											// 初始化顺序队列
+			cout << "请输入要创建的顺序队列的长度";
+			cin >> i;
+			cout << endl;
+			InitQueue(Q, i);
+			cout << endl << "创建成功！" << endl;
+			break;
+		case 2:										// 入队
+			cout << "输入要入队的元素值：" << endl;
+			cin >> e;
+			cout << endl;
+			if (EnQueue(Q, e))
+			{
+				cout << endl << "入队成功！入队后队列元素为：" << endl;
+				DispQueue(Q);
+			}
+			else
+				cout << endl << "队满，不能入队！" << endl;
+			break;
+		case 3:											// 出队
+			if (DeQueue(Q, e))
+			{
+				cout << endl << "队列元素为：";
+				DispQueue(Q);
+				cout << endl << "出队元素为:" << e << endl;
+			}
+			else
+				cout << endl << "队空，不能出队！" << endl;
+			break;
+		case 4:										// 取队头元素
+			if (GetHead(Q, e))
+			{
+				cout << endl << "队列元素为：";
+				DispQueue(Q);
+				cout << endl << "队头元素为:" << e << endl;
+			}
+			else
+				cout << endl << "队空！" << endl;
+			break;
+		case 5:										// 取队尾元素
+			if (GetTail(Q, e))
+			{
+				cout << endl << "队列元素为：";
+				DispQueue(Q);
+				cout << endl << "队尾元素为:" << e << endl;
+			}
+			else
+				cout << endl << "队空！无数据元素" << endl;
+			break;
+		case 6:								// 清空队
+			ClearQueue(Q);
+			cout << "队已清空!" << endl;
+			break;
+		case 7:										// 测队空
+			if (QueueEmpty(Q))
+				cout << endl << "空队！" << endl;
+			else
+				cout << endl << "非空队！" << endl;
+			break;
+		case 8:										// 测队满
+			if (QueueFull(Q))
+				cout << endl << "满队！" << endl;
+			else
+				cout << endl << "非满队！" << endl;
+			break;
+		case 9:										// 显示队列元素
+			DispQueue(Q);
+			cout << endl;
+			break;
+		case 10:
+			cout << "\nQ.front=" << Q.front << endl;
+			cout << "Q.rear=" << Q.rear << endl;
+			break;
+		case 0:											// 退出
+			DestroyQueue(Q);
+			cout << "结束运行Bye-bye!" << endl;
+			break;
+		default:										// 无效选择
+			cout << "无效选择!\n";
+			break;
+		}
+	} while (choice != 0);
+
+	return 0;
+}//end of main function
+
--- a/Chapter3/SqQueue/SqQueue.h
+++ b/Chapter3/SqQueue/SqQueue.h
@@ -0,0 +1,100 @@
+template<class DT>
+struct SqQueue
+{
+	DT* base;														// 存储空间基地址
+	int front;														// 队头指针，指向队首元素
+	int rear;														// 队尾指针，指向队尾元素的后面
+	int queuesize;													// 队列容量
+};
+
+template<class DT>													// 算法3.14 初始化队列
+bool InitQueue(SqQueue<DT>& Q, int m)								// 创建容量为m的空队列
+{
+	Q.base = new DT[m];												// 1. 申请一组连续的内存空间
+	if (!Q.base) exit(1);											// 申请失败，退出
+	Q.front = Q.rear = 0;											// 2. 申请成功，为队列属性赋值
+	Q.queuesize = m;
+	return true;													// 3. 返回true
+}
+
+template<class DT>													// 算法3.15 销毁队列
+void DestroyQueue(SqQueue<DT>& Q)									// 销毁循环队列
+{
+	delete[] Q.base;												// 1. 释放循环队列占用的内存空间
+	Q.front = Q.rear = 0;											// 2. 为队列属性赋值
+	Q.queuesize = 0;
+}
+
+template<class DT>													// 算法3.16 入队
+bool EnQueue(SqQueue<DT>& Q, DT e)									// 在队尾插入一个新元素
+{
+	if ((Q.rear + 1) % Q.queuesize == Q.front)						// 1. 队满的情况
+		return false;												// 无法入队，返回false
+	Q.base[Q.rear] = e;												// 2. 元素e放在队尾指针处
+	Q.rear = (Q.rear + 1) % Q.queuesize;							// 队尾指针增1
+	return true;													// 3. 返回true
+}
+
+template<class DT>													// 算法3.17 出队
+bool DeQueue(SqQueue<DT>& Q, DT& e)									// 删除队头元素
+{
+	if (Q.front == Q.rear)											// 1. 队空的情况
+		return false;												// 无法出队，返回false
+	e = Q.base[Q.front];											// 2. 取队头元素，赋值给e
+	Q.front = (Q.front + 1) % Q.queuesize;							// 队头指针加1
+	return true;													// 3. 返回true
+}
+
+template<class DT>													// 算法3.18 取队头元素
+bool GetHead(SqQueue<DT> Q, DT& e)									// 取队头元素
+{
+	if (Q.front == Q.rear)											// 1. 队空的情况
+		return false;												// 无队头元素，返回false
+	e = Q.base[Q.front];											// 2. 取队头元素，赋值给e
+	return true;													// 3. 返回true
+}
+
+template<class DT>
+bool GetTail(SqQueue<DT> Q, DT& e)									// 取队尾元素
+{
+	if (Q.front == Q.rear)											// 1. 队空的情况
+		return false;												// 无队尾元素，返回false
+	e = Q.base[(Q.rear - 1 + Q.queuesize) % Q.queuesize];			// 2. 取队尾元素，赋值给e
+	return true;													// 3. 返回true
+}
+
+template<class DT>
+int QueueLength(SqQueue<DT> Q)										// 测表长
+{
+	return (Q.rear - Q.front + Q.queuesize) % Q.queuesize;
+}
+
+template<class DT>
+bool QueueEmpty(SqQueue<DT> Q)										// 判队空
+{
+	return Q.front == Q.rear;
+}
+
+template<class DT>
+bool QueueFull(SqQueue<DT> Q)										// 判队满
+{
+	return (Q.rear + 1) % Q.queuesize == Q.front;
+}
+
+template<class DT>
+void ClearQueue(SqQueue<DT>& Q)										// 清空队
+{
+	Q.front = Q.rear = 0;
+}
+
+template<class DT>
+void DispQueue(SqQueue<DT> Q)										// 显示队
+{
+	int i = Q.front;
+	while (i != Q.rear)
+	{
+		cout << Q.base[i] << " ";
+		i = (i + 1) % Q.queuesize;
+	}
+	cout << endl;
+}
--- a/Chapter3/SqQueue/SqQueue.vcxproj
+++ b/Chapter3/SqQueue/SqQueue.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{6169383d-812e-4602-8711-bbbe639a6601}</ProjectGuid>
+    <RootNamespace>SqQueue</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="SqQueue.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqQueue.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter3/SqQueue/SqQueue.vcxproj.filters
+++ b/Chapter3/SqQueue/SqQueue.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SqQueue.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqQueue.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
--- a/Chapter3/SqStack/SqStack.cpp
+++ b/Chapter3/SqStack/SqStack.cpp
@@ -0,0 +1,113 @@
+
+#include<iostream>//cout,cin
+using namespace std;
+#include "SqStack.h"
+
+char pause;
+
+
+void dispmenu()
+{																		//显示主菜单
+	cout << endl;
+	cout << "1-初始化顺序栈\n";
+	cout << "2-元素入栈\n";
+	cout << "3-元素出栈\n";
+	cout << "4-取栈顶元素\n";
+	cout << "5-清空栈\n";
+	cout << "6-测栈空\n";
+	cout << "7-测栈满\n";
+	cout << "8-显示栈元素\n";
+	cout << "9-查看栈顶指针\n";
+	cout << "0-退出\n";
+}
+
+
+//主函数
+int main()
+{
+	int i;
+	int e;
+	SqStack<int> S;//建立容量为20、元素类型为整型的空顺序栈
+	system("cls");														// 清屏
+
+	int choice;
+	do
+	{
+		dispmenu();														// 显示主菜单
+		cout << "Enter choice(1~6，0 退出):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:														// 初始化顺序栈
+			cout << "请输入要创建的顺序栈的长度";
+			cin >> i;
+			cout << endl;
+			InitStack(S, i);
+			cout << endl << "创建成功！" << endl;
+			break;
+		case 2:													// 入栈
+			cout << "输入要入栈的元素值：" << endl;
+			cin >> e;
+			if (Push(S, e))
+			{
+				cout << "入栈成功！入栈后栈元素为：" << endl;
+				DispStack(S);
+			}
+			else
+				cout << endl << "栈满，不能入栈！" << endl;
+			break;
+		case 3:														// 出栈
+			if (Pop(S, e))
+			{
+				cout << "出栈成功！出栈元素为:" << e << endl;
+				cout << "出栈后栈元素为：" << endl;
+				DispStack(S);
+			}
+			else
+				cout << endl << "栈空，出栈失败！" << endl;
+			break;
+		case 4:													// 取栈顶元素
+			if (GetTop(S, e))
+			{
+				cout << endl << "栈顶元素为:" << e << endl;
+			}
+			else
+				cout << endl << "栈空！" << endl;
+			break;
+		case 5:													// 清空栈
+			ClearStack(S);
+			cout << endl << "栈已空！" << endl;
+			break;
+		case 6:													// 测栈空
+			if (StackEmpty(S))
+				cout << endl << "空栈！" << endl;
+			else
+				cout << endl << "不是空栈！" << endl;
+			break;
+		case 7:													// 测栈满
+			if (StackFull(S))
+				cout << endl << "栈满！" << endl;
+			else
+				cout << endl << "栈不满！" << endl;
+			break;
+		case 8:													// 显示栈元素
+			DispStack(S);
+			cout << endl;
+			break;
+		case 9:													// 显示栈顶指针
+			cout << "栈顶指针top= " << S.top << endl;
+			cout << endl;
+			break;
+		case 0:														// 退出
+			DestroyStack(S);
+			cout << "结束运行 Bye-bye!" << endl;
+			break;
+		default:													// 无效选择
+			cout << "无效选择!\n";
+			break;
+		}
+	} while (choice != 0);
+
+	return 0;
+}//end of main function
+
--- a/Chapter3/SqStack/SqStack.h
+++ b/Chapter3/SqStack/SqStack.h
@@ -0,0 +1,107 @@
+template <class DT>
+struct SqStack														// 顺序栈
+{
+	DT* base;														// 栈首址
+	int top;														// 栈顶指针
+	int stacksize;													// 栈容量
+};
+
+//基本操作的实现
+//【算法3.1】														// 初始化栈													
+template <class DT>
+void InitStack(SqStack<DT>& S, int m)
+{
+	S.base = new DT[m];												// 申请栈空间
+	if (S.base == NULL)												// 申请失败，退出
+	{
+		cout << "未创建成功！";
+		exit(1);
+	}
+	S.top = -1;														// 设置空栈属性
+	S.stacksize = m;
+}
+
+
+//算法3.2】															// 销毁栈
+template <class DT>
+void DestroyStack(SqStack<DT>& S)
+{
+	delete[] S.base;												// 释放栈空间
+	S.top = -1;
+	S.stacksize = 0;													// 设置栈属性
+}
+
+
+//【算法3.3】														// 入栈
+template<class DT>
+bool Push(SqStack<DT>& S, DT e)
+{
+	if (S.top == S.stacksize - 1)										// 栈满，不能入栈
+		return false;												// 返回false
+	S.top++;
+	S.base[S.top] = e;
+	return true;													// 入栈成功，返回true
+}
+
+//【算法3.4】														// 出栈
+template<class DT>
+bool Pop(SqStack<DT>& S, DT& e)
+{
+	if (S.top == -1)													// 栈空
+		return false;												// 返回false
+	e = S.base[S.top];												// 取栈顶元素
+	S.top--;														// 栈顶指针下移
+	return true;													// 出栈成功，返回true
+}
+
+
+//【算法3.5】														// 获取栈顶元素
+template<class DT>
+bool GetTop(SqStack<DT> S, DT& e)
+{
+	if (S.top == -1)													// 栈空
+		return false;												// 返回false
+	e = S.base[S.top];												// 栈非空，取栈顶元素
+	return true;													// 返回true
+}
+
+// 测栈空
+template<class DT>
+bool StackEmpty(SqStack<DT> S)
+{
+	if (S.top == -1)													// 空栈，返回true
+		return true;
+	else															// 空栈，返回false
+		return false;
+}
+
+//显示栈内容
+template<class DT>
+void DispStack(SqStack<DT> S)
+{
+	int i = S.top;
+	while (i >= 0)
+	{
+		cout << S.base[i--] << "\t";
+	}
+	cout << endl;
+}
+
+template<class DT>
+void ClearStack(SqStack<DT>& S)
+{
+	S.top = -1;
+
+}
+
+template<class DT>
+int StackFull(SqStack<DT> S)
+{
+	if (S.top == S.stacksize - 1)
+		return 1;
+	else
+		return 0;
+
+}
+
+
--- a/Chapter3/SqStack/SqStack.vcxproj
+++ b/Chapter3/SqStack/SqStack.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{5fb4adab-1035-4344-aec9-72e903ac27a2}</ProjectGuid>
+    <RootNamespace>SqStack</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="SqStack.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SqStack.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Chapter3/SqStack/SqStack.vcxproj.filters
+++ b/Chapter3/SqStack/SqStack.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqStack.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SqStack.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Chapter3/ValExpression/Expresion.cpp
+++ b/Chapter3/ValExpression/Expresion.cpp
@@ -0,0 +1,282 @@
+#include<iostream>		//cout,cin
+using namespace std;
+#include"SqStack.h"
+
+char pause;
+
+char Precede(char t1, char t2)								//算符的优先级比较
+{
+	char f;
+	switch (t2)
+	{
+	case '+':
+	case '-':if (t1 == '(' || t1 == '=')
+		f = '<';
+			else
+		f = '>';
+		break;
+	case '*':
+	case '/':if (t1 == '*' || t1 == '/' || t1 == ')')
+		f = '>';
+			else
+		f = '<';
+		break;
+	case '(':if (t1 == ')')
+	{
+		cout << "ERROR1" << endl;
+		exit(0);
+	}
+			else
+		f = '<';
+		break;
+	case ')':switch (t1)
+	{
+	case '(':f = '=';
+		break;
+	case '=':cout << "ERROR2" << endl;
+		exit(0);
+	default: f = '>';
+	}
+			break;
+	case '=':switch (t1)
+	{
+	case '=':f = '=';
+		break;
+	case '(':cout << "ERROR2" << endl;
+		exit(0);
+	default: f = '>';
+	}
+	}
+	return f;
+}
+
+
+bool In(char ch)										// 判断 ch 是否为运算符
+{
+	switch (ch)
+	{
+	case'+':
+	case'-':
+	case'*':
+	case'/':
+	case'(':
+	case')':
+	case'=':return true;
+	default:return false;
+	}
+}
+
+
+float Operate(float a, char theta, float b)
+{													// 实施一次运算
+	float ch;
+	switch (theta)
+	{
+	case'+':ch = a + b;
+		break;
+	case'-':ch = a - b;
+		break;
+	case'*':ch = a * b;
+		break;
+	case'/':ch = a / b;
+	}
+	return ch;
+}
+
+//算法3.12 
+float Val_Exp(char* exp)								// 中缀表达式求值。
+{
+	SqStack<char>   OP;									// 运算符栈
+	SqStack<float>  OD;									// 运算数栈
+	InitStack(OP, 30);
+	InitStack(OD, 30);
+	char theta;
+	float a, b, result;
+	char ch, x;											// 存放由键盘接收的字符
+	char z[6];											// 存放符点数字符串
+	int i;
+	Push(OP, '=');										// # 是表达式结束标志
+	ch = *exp++;
+	GetTop(OP, x);
+	while (ch != '=' || x != '=')
+	{
+		if (ch >= '0' && ch <= '9' || ch == '.')					// ch 是操作数
+		{
+			i = 0;
+			do
+			{
+				z[i] = ch;
+				i++;
+				ch = *exp++;
+			} while (ch >= '0' && ch <= '9' || ch == '.');
+			z[i] = '\0';
+			result = atof(z);										// 将字符串数组转为符点型存于result
+			Push(OD, result);
+		}
+		else if (In(ch))											// 是7种运算符之一
+			switch (Precede(x, ch))
+			{
+			case'<':Push(OP, ch);							// 栈顶元素优先权低
+				ch = *exp++;
+				break;
+			case'=':Pop(OP, x);								// 脱括号并接收下一字符
+				ch = *exp++;
+				break;
+			case'>':Pop(OP, theta);							// 退栈并将运算结果入栈
+				Pop(OD, b);
+				Pop(OD, a);
+				Push(OD, Operate(a, theta, b));
+			}
+		else												// ch是非法字符
+		{
+			cout << "ERROR3" << endl;;
+			exit(0);
+		}
+		GetTop(OP, x);
+	}
+	GetTop(OD, result);
+	DestroyStack(OP);
+	DestroyStack(OD);
+	return result;
+}
+
+void CreatePostExp(char* exp, char*& postexp)			// 由中缀式求后缀式
+{
+	char ch, x;
+	int i = 0;
+	SqStack<char> OP;
+	InitStack(OP, 30);
+	Push(OP, '=');										// # 是表达式结束标志
+	cout << "中缀表达式：" << exp << endl;
+	ch = *exp++;
+	while (ch)
+	{
+		if ((ch >= '0' && ch <= '9') || ch == '.')
+		{
+			postexp[i++] = ch;
+			ch = *exp++;
+		}
+		if (In(ch))										// 是7种运算符之一
+		{
+			postexp[i++] = ' ';
+			GetTop(OP, x);
+			switch (Precede(x, ch))
+			{
+			case'<':Push(OP, ch);						// 栈顶元素优先权低
+				ch = *exp++;
+				break;
+			case'=':Pop(OP, x);						// 脱括号并接收下一字符
+				ch = *exp++;
+				break;
+			case'>':
+				Pop(OP, postexp[i++]);				// 运算符出栈输出
+				break;
+			}
+		}
+		postexp[i] = '\0';
+	}//while
+	cout << "\n后缀表达式为:" << postexp << endl;
+	DestroyStack(OP);
+}
+
+//算法3.13  
+float Val_PostExp(char* postexp)						// 后缀表达式求值
+{
+	int i;
+	char z[6];
+	float result = 0, d = 0, a, b;
+	char ch;
+	SqStack<float> OD;
+	InitStack(OD, 30);
+	ch = *postexp++;
+	while (ch != '\0')
+	{
+
+		if (ch >= '0' && ch <= '9' || ch == '.')						// ch为操作数符号
+		{
+			i = 0;
+			do
+			{
+				z[i++] = ch;
+				ch = *postexp++;							// 取下一个操作数符号
+			} while (ch >= '0' && ch <= '9' || ch == '.');
+			z[i] = '\0';
+			d = atof(z);									// 将字符串数组转为符点型存于result
+			Push(OD, d);									// 操作数进栈
+		}
+		if (In(ch))										// ch为运算符
+		{
+			Pop(OD, a);
+			Pop(OD, b);
+			Push(OD, Operate(b, ch, a));
+			ch = *postexp++;
+		}
+		ch = *postexp++;
+	}
+	Pop(OD, result);
+	DestroyStack(OD);
+	return result;
+}
+
+
+//主函数
+void main()
+{
+	//int i;
+	char exp[20] = "(2.2+5)+4*(5-3.1)=";
+	char* postexp;
+	postexp = new char[30];
+	*postexp = '\0';
+	float v;
+	system("cls");										// 清屏
+	cout << "\n缺省表达式：" << exp;
+	cout << endl;
+	int choice;
+	do
+	{													// 显示主菜单
+		cout << endl;
+		cout << "1-创建表达式\n";
+		cout << "2-表达式求值\n";
+		cout << "3-求后缀表达式\n";
+		cout << "4-后缀表达式求值\n";
+		cout << "5-显示表达式\n";
+		cout << "0-退出\n";
+		cout << "输入功能选项（1~5，0 退出）:\n";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:										// 创建表达式
+			cout << "\n请输入表达式，以=结束" << endl;
+			cin >> exp;
+			break;
+		case 2:										// 表达式求值
+			v = Val_Exp(exp);
+			cout << exp;
+			cout << v << endl;
+			break;
+		case 3:										// 求后缀表达式
+			CreatePostExp(exp, postexp);
+			break;
+		case 4:										// 后缀表达式求值
+			v = Val_PostExp(postexp);
+			cout << '\n' << postexp << "=" << v << endl;
+			break;
+		case 5:										// 显示表达式
+			cout << endl;
+			cout << "\n已创建的表达式为：";
+			cout << exp << endl;
+			if (strlen(postexp))
+			{
+				cout << "\n后缀表达式为：";
+				cout << postexp << endl;
+			}
+			break;
+		case 0:										// 退出
+			cout << "\n结束运行，Bye-Bye!" << endl;
+			break;
+		default://
+			cout << "\n无效选择!\n";
+			break;
+		}
+	} while (choice != 0);
+}//end main
--- a/Chapter3/ValExpression/SqStack.h
+++ b/Chapter3/ValExpression/SqStack.h
@@ -0,0 +1,89 @@
+template <class DT>
+struct SqStack														// 顺序栈
+{
+	DT* base;														// 栈首址
+	int top;														// 栈顶指针
+	int stacksize;													// 栈容量
+};
+
+//基本操作的实现
+//【算法3.1】														// 初始化栈													
+template <class DT>
+void InitStack(SqStack<DT>& S, int m)
+{
+	S.base = new DT[m];												// 申请栈空间
+	if (S.base == NULL)												// 申请失败，退出
+	{
+		cout << "未创建成功！";
+		exit(1);
+	}
+	S.top = -1;														// 设置空栈属性
+	S.stacksize = m;
+}
+
+
+//算法3.2】															// 销毁栈
+template <class DT>
+void DestroyStack(SqStack<DT>& S)
+{
+	delete[] S.base;												// 释放栈空间
+	S.top = -1;
+	S.stacksize = 0;													// 设置栈属性
+}
+
+
+//【算法3.3】														// 入栈
+template<class DT>
+bool Push(SqStack<DT>& S, DT e)
+{
+	if (S.top == S.stacksize - 1)										// 栈满，不能入栈
+		return false;												// 返回false
+	S.top++;
+	S.base[S.top] = e;
+	return true;													// 入栈成功，返回true
+}
+
+//【算法3.4】														// 出栈
+template<class DT>
+bool Pop(SqStack<DT>& S, DT& e)
+{
+	if (S.top == -1)													// 栈空
+		return false;												// 返回false
+	e = S.base[S.top];												// 取栈顶元素
+	S.top--;														// 栈顶指针下移
+	return true;													// 出栈成功，返回true
+}
+
+
+//【算法3.5】														// 获取栈顶元素
+template<class DT>
+bool GetTop(SqStack<DT> S, DT& e)
+{
+	if (S.top == -1)													// 栈空
+		return false;												// 返回false
+	e = S.base[S.top];												// 栈非空，取栈顶元素
+	return true;													// 返回true
+}
+
+// 测栈空
+template<class DT>
+bool StackEmpty(SqStack<DT> S)
+{
+	if (S.top == -1)													// 空栈，返回true
+		return true;
+	else															// 空栈，返回false
+		return false;
+}
+
+//显示栈内容
+template<class DT>
+void DispStack(SqStack<DT> S)
+{
+	int i = S.top;
+	while (i >= 0)
+	{
+		cout << S.base[i--] << "\t";
+	}
+	cout << endl;
+}
+
--- a/Chapter3/ValExpression/ValExpression.vcxproj
+++ b/Chapter3/ValExpression/ValExpression.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{85ff5098-d9c7-4d2e-b248-4c3e402ad373}</ProjectGuid>
+    <RootNamespace>ValExpression</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
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--- a/Chapter4/AddMatrix/AddMatrix.cpp
+++ b/Chapter4/AddMatrix/AddMatrix.cpp
@@ -0,0 +1,203 @@
+#include<iostream>//cout,cin
+#include"process.h"//exit()
+#include"stdio.h"//EOF,NULL
+using namespace std;
+
+struct MTNode												// 三元组
+{
+	int i, j;												// 行号，列号
+	int e;													// 非零元
+	MTNode* next;											// 指向同行下一个结点
+};
+
+typedef struct
+{
+	int mu, nu, tu;											// 行数、列数、非零元个数
+	MTNode** rops;											// 存放各行链表的头指针
+}LMatrix;
+
+int cmp(int a, int b)										// 列号比较
+{
+	if (a < b) return -1;
+	else if (a == b) return 0;
+	else return 1;
+}
+
+void NodeCopy(MTNode*& s, MTNode* x)						// 结点拷贝
+{
+	s->e = x->e; s->i = x->i; s->j = x->j;
+}
+
+void AddNode(MTNode*& lp, MTNode*& lq, MTNode* s)			// 表尾添加结点
+{
+	MTNode* p;
+	p = new MTNode;
+	NodeCopy(p, s);
+	p->next = NULL;
+	if (lp == NULL)											// 首元结点
+	{
+		lp = p;
+		lq = p;
+	}
+	else													// 非首元结点
+	{
+		lq->next = p;
+		lq = p;
+	}
+}//
+
+
+LMatrix MatrixAdd(LMatrix ma, LMatrix mb)					// 求矩阵和
+{
+	LMatrix mc;
+	MTNode* pa, * pb, * pc;										// 分别指向被加数、加数、和矩阵行向量首元结点
+	MTNode* s;//
+	int i, sum;
+	int m, n;												// 行数，列数
+	int flag = 1;
+	m = ma.mu;
+	n = ma.nu;
+	mc.mu = m; mc.nu = n; mc.tu = 0; mc.rops = NULL;
+	if (mc.rops) delete[] mc.rops;
+	mc.rops = new MTNode * [m];
+	for (i = 0; i < m; i++)
+		mc.rops[i] = NULL;									// C行指针向量初始化
+	for (i = 0; i < m; i++)
+	{
+		pa = ma.rops[i];
+		pb = mb.rops[i];
+		pc = mc.rops[i];
+		while (pa && pb)										// 被加矩阵、加矩阵行链不空
+		{
+			flag = 1;
+			if (pa->j < pb->j)
+			{
+				s = new MTNode;//
+				NodeCopy(s, pa);
+				s->next = NULL;
+				pa = pa->next;
+			}
+			else if (pa->j == pb->j)
+			{
+				sum = pa->e + pb->e;
+				if (sum == 0)  flag = 0;
+				else
+				{
+					s = new MTNode;
+					NodeCopy(s, pa);
+					s->e = sum;
+					s->next = NULL;
+				}
+				pa = pa->next; pb = pb->next;//pa,pb后移
+			}
+			else
+			{
+				s = new MTNode;
+				NodeCopy(s, pb);							// 复制pb所指结点
+				pb = pb->next;								// pb后移
+				s->next = NULL;
+			}
+			if (flag)										// 有新结点生成
+			{
+				mc.tu++;
+				AddNode(mc.rops[i], pc, s);
+			}
+		}//while
+		if (pa)												// pa不空，复制pa剩余链到和矩阵中
+		{
+			while (pa)
+			{
+				s = new MTNode;
+				NodeCopy(s, pa); pa = pa->next;
+				AddNode(mc.rops[i], pc, s);
+			}//while
+		}//if(pa)
+		if (pb)												// pb不空，复制pb剩余链到和矩阵中
+		{
+			while (pb)
+			{
+				s = new MTNode;
+				NodeCopy(s, pb); pb = pb->next;
+				AddNode(mc.rops[i], pc, s);
+			}//while
+		}//if(pb)
+	}//for
+	return mc;
+}//MAdd
+
+void MDisp(LMatrix a)
+{
+	MTNode* p;
+	int i, j, c = 0;
+	for (i = 0; i < a.mu; i++)
+	{
+		p = a.rops[i];
+		for (j = 0; j < a.nu; j++)
+		{
+			if (p == NULL)
+				cout << '\t' << c;
+			else if (j < p->j)
+				cout << '\t' << c;
+			else
+			{
+				cout << '\t' << p->e;
+				p = p->next;
+			}
+		}//for
+		cout << endl;
+	}//for
+}//MatrixDisp
+
+LMatrix MCreate(int d[][3], int m, int n, int k)
+{															// 由三元组的二维数组生成行向量稀疏存储矩阵
+	LMatrix M = { m,n,k,NULL };
+	int i, r1, r2;
+	MTNode* s, * p;											// 工作指针
+	if (M.rops) delete[] M.rops;
+	M.rops = new MTNode * [m];
+	for (i = 0; i < m; i++)
+		M.rops[i] = NULL;
+	r1 = m;
+	p = M.rops[r1];//
+	for (i = 0; i < k; i++)										// 扫描非零元数组
+	{
+		s = new MTNode;
+		s->i = d[i][0];
+		s->j = d[i][1];
+		s->e = d[i][2];
+		r2 = s->i;											// 非零元所在行
+		if (r2 != r1)											// 创建链表第1个结点
+		{
+			M.rops[r2] = s;
+			s->next = NULL;
+			p = s;
+			r1 = r2;
+		}
+		else												// 创建链表非首元结点
+		{
+			s->next = p->next;
+			p->next = s;
+			p = s;
+		}
+	}//for
+	return M;
+}//MCreate
+
+
+void main()
+{
+	//MTNode *p;
+	LMatrix ma, mb, mc;
+	int m = 4, n = 6;												// 行数，列数
+	int da[5][3] = { {0,1,3},{1,1,2},{1,3,5},{3,0,9},{3,5,1} };
+	int db[4][3] = { {0,2,7},{1,1,6},{1,3,-5},{2,1,4} };
+	ma = MCreate(da, 4, 6, 5);										// 构造ma矩阵
+	cout << "ma=" << endl;
+	MDisp(ma);													// 显示ma矩阵
+	mb = MCreate(db, 4, 6, 4);										// 构造mb矩阵
+	cout << "mb=" << endl;
+	MDisp(mb);													// 显示mb矩阵
+	mc = MatrixAdd(ma, mb);												// 求mc=ma+mb
+	cout << "mc=ma+mb=" << endl;
+	MDisp(mc);													// 输出和矩阵
+}
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+	EndGlobalSection
+EndGlobal
--- a/Chapter4/MatrixTrans/MatrixTrans.cpp
+++ b/Chapter4/MatrixTrans/MatrixTrans.cpp
@@ -0,0 +1,130 @@
+#include<iostream>//cout,cin
+using namespace std;
+
+
+struct MNode											//三元组结点
+{
+	int i, j;											//行号，列号
+	int e;												//非零元
+};
+
+
+struct TSMatrix
+{
+	int mu, nu, tu;										// 行数、列数、非零元个数
+	MNode* data;										// 三元组表
+};
+
+TSMatrix MCreate(int d[][3], int m, int n, int k)			//由三元组的二维数组生成行向量稀疏存储矩阵
+{
+	TSMatrix M = { m,n,k,NULL };
+	if (k != 0)
+		M.data = new MNode[k];
+	for (int i = 0; i < k; i++)
+	{
+		M.data[i].i = d[i][0];
+		M.data[i].j = d[i][1];
+		M.data[i].e = d[i][2];
+	}
+	return M;
+}//
+
+
+void MDisp(TSMatrix a)									//矩阵显示
+{
+	MNode p;
+	int i, j, k = 0, c = 0;
+	p = a.data[k];
+	for (i = 0; i < a.mu; i++)
+	{
+		for (j = 0; j < a.nu; j++)
+		{
+			if (k < a.tu && p.i == i && p.j == j)
+			{
+				cout << '\t' << p.e;
+				k++;
+				if (k < a.tu) p = a.data[k];
+			}
+			else
+			{
+				cout << '\t' << c;
+			}
+		}//for
+		cout << endl;
+		cout << endl;
+	}//for
+}//MatrixDisp
+
+//算法4.1											转置算法一
+void MatrixTrans_1(TSMatrix A, TSMatrix& B)
+{//
+	int col, p, q;
+	B.mu = A.nu; B.nu = A.mu; B.tu = A.tu;					//B的行数、列数、非零元个数分别等于A的列数、行数和非零元个数
+	if (B.tu)										// 矩阵B有非零元
+	{
+		q = 0;
+		for (col = 0; col < A.nu; ++col)					// 按列扫描A矩阵
+			for (p = 0; p < A.tu; ++p)
+				if (A.data[p].j == col)				// col列有非零元
+				{
+					B.data[q].i = A.data[p].j;		// 交换行、列号，生成转置元素
+					B.data[q].j = A.data[p].i;
+					B.data[q].e = A.data[p].e;
+					++q;
+				}
+	}
+}
+
+
+
+//算法4.2											快速转置
+void MatrixTrans_2(TSMatrix A, TSMatrix& B)
+{
+	int col, i, k, q;
+	int* num, * cpot;
+	B.mu = A.nu; B.nu = A.mu; B.tu = A.tu;					//B的行数、列数、非零元个数分别等于A的列数、行数和非零元个数
+	num = new int[B.nu];
+	cpot = new int[B.nu];
+	if (B.tu)										// 非零元个数不为零，实施转置
+	{
+		for (col = 0; col < A.nu; col++)					//A中每一列非零元个数初始化为0
+			num[col] = 0;
+		for (i = 0; i < A.tu; i++)							//求矩阵A中每一列非零元个数
+			num[A.data[i].j]++;
+		cpot[0] = 0;									//A中第0列首个非零元在B中的下标
+		for (col = 1; col <= A.nu; ++col)					// 求A中每一列首个非零元在B中的下标
+			cpot[col] = cpot[col - 1] + num[col - 1];
+		for (k = 0; k < A.tu; ++k)							//扫描A的三元组表
+		{
+			col = A.data[k].j;						//当前三元组列号
+			q = cpot[col];							//当前三元组在B中的下标
+			B.data[q].i = A.data[k].j;
+			B.data[q].j = A.data[k].i;
+			B.data[q].e = A.data[k].e;
+			cpot[col]++;							// 预置同一列下一个三元组在B中的下标
+		}//for
+	}//if
+}//
+
+
+
+void main()
+{
+	TSMatrix ma, mb1, mb2;
+	int m1 = 4, n1 = 6, k1 = 6;								//被乘矩阵行数，列数，非零元个数
+	int da[6][3] = { {0,2,11},{0,4,12},{1,3,22},
+	{2,1,31},	{2,3,32},{3,0,41} };					//ma阵的非零元
+	ma = MCreate(da, m1, n1, k1);                        //生成三元组顺序存储的ma阵
+	cout << "ma=" << endl;
+	MDisp(ma);                                      //显示ma阵
+	mb1.data = new MNode[ma.tu];
+	mb2.data = new MNode[ma.tu];
+	cout << "方法一：直接取，顺序存" << endl;           //用方法一转置矩阵
+	MatrixTrans_1(ma, mb1);
+	cout << "mb=" << endl;                              //显示转置矩阵
+	MDisp(mb1);
+	cout << "方法二：顺序取，直接存" << endl;           //用方法二转置矩阵
+	MatrixTrans_2(ma, mb2);
+	cout << "mb=" << endl;                              //显示转置矩阵
+	MDisp(mb2);
+}//
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--- a/Chapter5/BiTree/bitree.cpp
+++ b/Chapter5/BiTree/bitree.cpp
@@ -0,0 +1,129 @@
+#include<iostream>//cout,cin
+#include<string>
+using namespace std;
+#include"bitree.h"
+
+//测试参考数据
+string  fbt = "a b d # # e # # c f # # g # #";					// 满二叉树最后一层每个叶结点后有两个#
+string  cbt = "a b d # # e # # c # #";							// 完全二叉树每个叶结点后有两个#
+string  gbt = "a b # d # # c e # # #";							// 一般二叉树
+string  obt = "a b c d # # # # #";								// 左斜树1
+
+
+void dispmenu()
+{																//显示主菜单
+	cout << endl;
+	cout << "1-创建二叉树\n";
+	cout << "2-先序递归遍历二叉树\n";
+	cout << "3-中序递归遍历二叉树\n";
+	cout << "4-后序递归遍历二叉树\n";
+	cout << "5-层序遍历二叉树\n";
+	cout << "6-先序非递归遍历二叉树\n";
+	cout << "7-中序非递归遍历二叉树\n";
+	cout << "8-后序非递归遍历二叉树\n";
+	cout << "9-结点查询\n";
+	cout << "10-求二叉树高度\n";
+	cout << "11-求二叉树结点个数\n";
+	cout << "12-显示二叉树\n";
+	cout << "0 -退出\n";
+}
+
+int main()
+{
+	int level;
+	BTNode<char>* bt;
+
+	system("cls");													// 清屏
+
+	int choice;
+	do
+	{
+		dispmenu();													// 显示主菜单
+		cout << "Enter choice(1~12，0 退出):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:													// 创建二叉树 
+			cout << "测试参考数据：" << endl;
+			cout << "满二叉树：" << fbt << endl;
+			cout << "完全二叉树：" << cbt << endl;
+			cout << "一般二叉树：" << gbt << endl;
+			cout << "左斜二叉树：" << obt << endl;
+			cout << "请按先序序列的顺序输入二叉树,#为空指针域标志：" << endl;
+			CreateBiTree(bt);
+			break;
+		case 2:												// 先序递归遍历二叉树
+			cout << "先序遍历序列为：" << endl;
+			PreOrDerBiTree(bt);
+			break;
+		case 3:													// 中序递归遍历二叉树
+			cout << "中序遍历序列为：" << endl;
+			InOrDerBiTree(bt);
+			cout << endl;
+			break;
+		case 4:												// 后序递归遍历二叉树
+			cout << "后序遍历序列为：" << endl;
+			PostOrDerBiTree(bt);
+			cout << endl;
+			break;
+		case 5:												// 层序遍历二叉树
+			cout << "层序遍历序列为：" << endl;
+			cout << endl;
+			LevelBiTree(bt);
+			break;
+		case 6:												// 先序非递归遍历二叉树
+			cout << "先序非递归遍历序列为：" << endl;
+			PreOrderBiTree_N(bt);
+			cout << endl;
+			break;
+		case 7:												// 中序非递归遍历二叉树
+			cout << "中序非递归遍历序列为：" << endl;
+			InOrderBiTree_N(bt);
+			cout << endl;
+			break;
+		case 8:												// 后序非递归遍历二叉树
+			cout << "后序非递归遍历序列为：" << endl;
+			cout << endl;
+			PostOrderBiTree_N(bt);
+			break;
+		case 9:												// 结点查询
+			char e;
+			BTNode<char>* p;
+			cout << "输入要查询的结点值：" << endl;
+			cin >> e;
+			p = Search(bt, e);
+			if (p)
+			{
+				cout << "找到！";
+				cout << p->data << endl;
+			}
+			else
+				cout << "未找到！" << endl;
+			cout << endl;
+			break;
+		case 10:												// 求二叉树高度
+			cout << "二叉树高度为：" << Depth(bt) << endl;
+			cout << endl;
+			break;
+		case 11:												//求二叉树结点个数
+			cout << "二叉树结点数为：" << NodeCount(bt) << endl;
+			cout << endl;
+			break;
+		case 12:												// 显示二叉树
+			cout << "2-显示二叉树" << endl;
+			level = 1;
+			DispBiTree(bt, level);
+			cout << endl;
+			break;
+		case 0:												// 退出
+			DestroyBiTree(bt);
+			cout << "结束运行Bye-Bye!" << endl;
+			break;
+		default:												// 无效选择
+			cout << "Invalid choice\n";
+			break;
+		}
+	} while (choice != 0);
+
+	return 0;
+}
--- a/Chapter5/BiTree/bitree.h
+++ b/Chapter5/BiTree/bitree.h
@@ -0,0 +1,421 @@
+template <class DT>
+struct BTNode
+{
+	DT data;		                			//数据域
+	BTNode* lchild;								//指向左子树的指针
+	BTNode* rchild;								//指向右子树的指针
+};
+
+//队列工具
+template <class DT>
+struct SqQueue											// 顺序队类
+{
+	BTNode<DT>** base;									// 队列首址
+	int front;											// 队头指针
+	int rear;											// 队尾指针
+	int queuesize;										// 队容量
+};
+
+//栈
+template <class DT>
+struct SqStack										// 顺序栈
+{
+	BTNode<DT>** base;								// 栈首址
+	int top;										// 栈顶指针
+	int stacksize;									// 栈容量
+};
+
+//算法5.1										先序遍历递归算法
+template <class DT>
+void PreOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		cout << bt->data << ' ';	     			//输出结点上的数据
+		PreOrDerBiTree(bt->lchild);				//递归的调用前序遍历左子树
+		PreOrDerBiTree(bt->rchild);				//递归的调用前序遍历右子树
+	}
+	return;
+}
+
+//算法5.2										中序遍历递归算法
+template <class DT>
+void InOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		InOrDerBiTree(bt->lchild);				//递归的调用中序遍历左子树
+		cout << bt->data << ' ';	     			//输出结点上的数据
+		InOrDerBiTree(bt->rchild);  			//递归的调用中序遍历右子树
+	}
+	return;
+}
+
+//算法5.3										后序遍历递归算法
+template <class DT>
+void PostOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		PostOrDerBiTree(bt->lchild);			//递归的调用后序遍历左子树
+		PostOrDerBiTree(bt->rchild);			//递归的调用后序遍历右子树
+		cout << bt->data << ' ';					//输出结点上的数据
+	}
+	return;
+}
+
+
+//算法5.4										层序遍历算法	
+template<class DT>
+void LevelBiTree(BTNode<DT>* bt)
+{
+	SqQueue<DT> Q;								// 创建一个队
+	int m = 20;
+	InitQueue(Q, m);
+	BTNode<DT>* p;
+	p = bt;
+	if (p) EnQueue(Q, p);							// 树非空，入队              
+	while (!QueueEmpty(Q))						// 队非空
+	{
+		DeQueue(Q, p);							// 出队
+		cout << p->data;							// 访问
+		if (p->lchild != NULL)						// 有左孩子
+			EnQueue(Q, p->lchild);				// 左孩子入队
+		if (p->rchild != NULL)						// 有右孩子
+			EnQueue(Q, p->rchild);				// 右孩子入队
+	}
+	DestroyQueue(Q);							// 销毁队列
+}
+
+
+//算法5.5										先序非遍历递归算法
+template <class DT>
+void PreOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	p = bt;
+	while (p != NULL || !StackEmpty(S))			// 树非空或栈非空
+	{
+		while (p != NULL)							// 结点非空
+		{
+			cout << p->data << ' ';					// 访问结点
+			Push(S, p);							// 入栈
+			p = p->lchild;						// 转左子树
+		}
+		if (!StackEmpty(S))						// 栈非空
+		{
+			Pop(S, p);							// 出栈
+			p = p->rchild;						    // 转出栈结点的右子树
+		}
+	}
+	DestroyStack(S);							//销毁栈
+}
+
+
+//算法5.6 中序非遍历递归算法
+template <class DT>
+void InOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建一个栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	p = bt;
+	while (p != NULL || !StackEmpty(S))			// 结点非空或栈非空
+	{
+		while (p != NULL)							// 结点非空
+		{
+			Push(S, p);							// 入栈
+			p = p->lchild;						// 转出栈结点右子树
+		}
+		if (!StackEmpty(S))						// 栈非空
+		{
+			Pop(S, p);							// 出栈
+			cout << p->data << ' ';					// 访问出栈结点
+			p = p->rchild;						// 转出栈结点的右子树
+		}
+	}
+	DestroyStack(S);							// 销毁栈
+}
+
+
+
+//算法5.7										后序非遍历递归算法
+template <class DT>
+void PostOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建一个栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	BTNode<DT>* r;
+	p = bt;
+	bool flag;
+	do
+	{
+		while (p)								// 结点非空
+		{
+			Push(S, p);							// 结点入栈
+			p = p->lchild;						// 转左子树
+		}
+		r = NULL;									// 指向刚被访问点，初值为空
+		flag = true;								// true表示处理栈顶结点                     
+		while (!StackEmpty(S) && flag)			// 栈非空且当前处理的是栈顶结点
+		{
+			GetTop(S, p);						// 获取栈顶元素
+			if (p->rchild == r)					// 如果 当前结点是栈元素的右孩子
+			{
+				cout << p->data << ' ';				// 访问栈顶元素
+				Pop(S, p);						// 出栈
+				r = p;							// r指向被访问结点
+			}
+			else								 // 否则
+			{
+				p = p->rchild;					// 转栈顶元素右孩子
+				flag = false;						// 处理非栈顶结点
+			}
+		}
+	} while (!StackEmpty(S));						// 栈非空，循环
+	cout << endl;
+	DestroyStack(S);							// 销毁栈
+}
+
+
+//算法5.8                                      创建二叉树
+template <class DT>
+void CreateBiTree(BTNode<DT>*& bt)
+{
+	char ch;
+	cin >> ch;				                    // 输入根结点的数据
+	if (ch == '#')                                 // # 表示指针为空，说明树为空
+		bt = NULL;
+	else
+	{
+		bt = new BTNode<DT>;	                    // 申请内存
+		if (!bt)
+		{
+			cout << "申请内存失败！" << endl;
+			exit(-1);                           // 申请内存失败退出
+		}
+		bt->data = ch;
+		CreateBiTree(bt->lchild);               // 创建根结点左子树
+		CreateBiTree(bt->rchild);               // 创建根结点右子树
+	}
+	return;
+}
+
+
+//算法5.9 销毁二叉树
+template <class DT>
+void DestroyBiTree(BTNode<DT>*& bt)
+{
+	if (bt)                                     // 树非空
+	{
+		DestroyBiTree(bt->lchild);             // 销毁左子树
+		DestroyBiTree(bt->rchild);             // 销毁右子树
+		delete bt;
+	}
+}
+
+
+//算法5.10										结点查找
+
+template<class DT>
+BTNode<DT>* Search(BTNode<DT>* bt, DT e)		// 查找值为e的元素
+{
+	BTNode<DT>* p;
+	if (bt == NULL)								// 结点为空，返回
+		return NULL;
+	else if (bt->data == e)						// 找到，返回结点指针
+		return bt;
+	else										// 结点值不为e       
+	{
+		p = Search(bt->lchild, e);					// 在左子树上查找
+		if (p != NULL)								// 找到
+			return p;							// 返回结点指针
+		else									// 未找到
+			return Search(bt->rchild, e);		// 转右子树上查找
+	}
+}
+
+//算法5.11										求树深
+template <class DT>
+int Depth(BTNode<DT>* bt)
+{
+	int hl, hr;
+	if (bt == NULL)								// 树空
+		return 0;								// 深度为0
+	else										// 树非空
+	{
+
+		hl = Depth(bt->lchild);					// 求左子树深度
+		hr = Depth(bt->lchild);					// 求右子树深度
+		if (hl > hr)								// 左子树高
+			return hl + 1;						// 树高为左子树高加1
+		else return hr + 1;						// 左子树高,树高为左子树高加1
+	}
+}
+
+
+//算法5.12										结点计数
+template <class DT>
+int NodeCount(BTNode<DT>* bt)
+{
+	if (bt == NULL)								// 空树，结点数为0
+		return 0;
+	else										// 非空树，结点数为左、右子树结点数的和加1
+		return NodeCount(bt->lchild) + NodeCount(bt->rchild) + 1;
+}
+
+template <class DT>
+void DispBiTree(BTNode<DT>* bt, int level)        // 显示树
+{
+	if (bt)                                        //空二叉树不显示
+	{
+		DispBiTree(bt->rchild, level + 1);              //显示右子树
+		cout << endl;                                  //显示新行
+		for (int i = 0; i < level - 1; i++)
+			cout << "   ";                              //确保在第level列显示节点
+		cout << bt->data;                              //显示节点
+		DispBiTree(bt->lchild, level + 1);              //显示左子树  
+		cout << endl;
+	}//if
+}
+
+
+template <class DT>
+int leftCount(BTNode<DT>* bt)
+{
+	if (bt->lchild == NULL && bt->rchild == NULL)								// 空树，结点数为0
+		return 0;
+	else										// 非空树，结点数为左、右子树结点数的和加1
+		return NodeCount(bt->lchild) + NodeCount(bt->rchild) + 1;
+}
+
+
+//【算法3.14】											初始化队列
+template <class DT>
+void InitQueue(SqQueue<DT>& Q, int m)
+{
+	Q.base = new BTNode<DT>*[m];							// 申请队列空间
+	if (Q.base == NULL)									// 申请空间失败
+	{
+		cout << "未创建成功！";
+		exit(1);										// 退出
+	}
+	Q.front = Q.rear = 0;									// 设置队列属性 
+	Q.queuesize = m;
+}
+
+
+//算法3.15】											销毁列列
+template <class DT>
+void DestroyQueue(SqQueue<DT>& Q)
+{
+	delete[] Q.base;									// 释放队列空间
+	Q.front = Q.rear = 0;									// 设置队列属性
+	Q.queuesize = 0;
+}
+
+
+//【算法3.16】											入队
+template<class DT>
+bool EnQueue(SqQueue<DT>& Q, BTNode<DT>* e)
+{
+	if ((Q.rear + 1) % Q.queuesize == Q.front)					// 队满
+		return false;									// 返回false
+	Q.base[Q.rear] = e;									// 出队
+	Q.rear = (Q.rear + 1) % Q.queuesize;						// 修改队列属性
+	return true;										// 返回true
+}
+
+//【算法3.17】											出队
+template<class DT>
+bool DeQueue(SqQueue<DT>& Q, BTNode<DT>*& e)
+{
+	if (Q.front == Q.rear)									// 队空
+		return false;
+	e = Q.base[Q.front];
+	Q.front = (Q.front + 1) % Q.queuesize;
+	return true;										// 删除成功，返回true
+}
+
+// 测队空
+template<class DT>
+bool QueueEmpty(SqQueue<DT> Q)
+{
+	if (Q.front == Q.rear)									// 队空
+		return true;									// 返回true
+	else												// 队不空
+		return false;									// 返回false
+}
+
+//【算法3.1】										初始化栈
+template <class DT>
+void InitStack(SqStack<DT>& S, int m)
+{
+	S.base = new BTNode<DT>*[m];						// 申请栈空间
+	if (S.base == NULL)
+	{
+		cout << "未创建成功！";
+		exit(1);
+	}
+	S.top = -1;										// 空栈
+	S.stacksize = m;									// 栈容量为m
+}
+
+
+//算法3.2】											销毁栈
+template <class DT>
+void DestroyStack(SqStack<DT>& S)//析构函数
+{
+	delete[] S.base;								//释放栈空间
+	S.top = -1;
+	S.stacksize = 0;
+}
+
+
+//【算法3.3】
+template<class DT>
+bool Push(SqStack<DT>& S, BTNode<DT>* e)
+{
+	if (S.top == S.stacksize - 1)						// 栈满，不能插入
+		return false;
+	S.top++;
+	S.base[S.top] = e;
+	return true;									// 插入成功，返回true
+}
+
+//【算法3.4】										出栈
+template<class DT>
+bool Pop(SqStack<DT>& S, BTNode<DT>*& e)
+{
+	if (S.top == -1)									//栈空
+		return false;
+	e = S.base[S.top];
+	S.top--;
+	return true;									// 出栈成功，返回true
+}
+
+template<class DT>									// 获取栈元素
+bool GetTop(SqStack<DT>& S, BTNode<DT>*& e)
+{
+	if (S.top == -1)									// 栈空，返回false
+		return false;
+	e = S.base[S.top];								// 取栈元素
+	return true;									// 返回true
+}
+
+
+// 测栈空
+template<class DT>
+bool StackEmpty(SqStack<DT> S)
+{
+	if (S.top == -1)									// 栈空，返回true
+		return true;
+	else											// 栈非空，返回false
+		return false;
+}
--- a/Chapter5/Chapter5.sln
+++ b/Chapter5/Chapter5.sln
@@ -0,0 +1,51 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BiTree", "BiTree\BiTree.vcxproj", "{904CFCDF-DA23-415A-8D68-8E51AD913458}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Huffmn", "Huffmn\Huffmn.vcxproj", "{A456A451-7570-4D79-9836-04559D3E944B}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ThrBiTree", "ThrBiTree\ThrBiTree.vcxproj", "{37EF98CA-2156-4ECB-A15D-52041DBAC78C}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Debug|x64.ActiveCfg = Debug|x64
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Debug|x64.Build.0 = Debug|x64
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Debug|x86.ActiveCfg = Debug|Win32
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Debug|x86.Build.0 = Debug|Win32
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Release|x64.ActiveCfg = Release|x64
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Release|x64.Build.0 = Release|x64
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Release|x86.ActiveCfg = Release|Win32
+		{904CFCDF-DA23-415A-8D68-8E51AD913458}.Release|x86.Build.0 = Release|Win32
+		{A456A451-7570-4D79-9836-04559D3E944B}.Debug|x64.ActiveCfg = Debug|x64
+		{A456A451-7570-4D79-9836-04559D3E944B}.Debug|x64.Build.0 = Debug|x64
+		{A456A451-7570-4D79-9836-04559D3E944B}.Debug|x86.ActiveCfg = Debug|Win32
+		{A456A451-7570-4D79-9836-04559D3E944B}.Debug|x86.Build.0 = Debug|Win32
+		{A456A451-7570-4D79-9836-04559D3E944B}.Release|x64.ActiveCfg = Release|x64
+		{A456A451-7570-4D79-9836-04559D3E944B}.Release|x64.Build.0 = Release|x64
+		{A456A451-7570-4D79-9836-04559D3E944B}.Release|x86.ActiveCfg = Release|Win32
+		{A456A451-7570-4D79-9836-04559D3E944B}.Release|x86.Build.0 = Release|Win32
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Debug|x64.ActiveCfg = Debug|x64
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Debug|x64.Build.0 = Debug|x64
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Debug|x86.ActiveCfg = Debug|Win32
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Debug|x86.Build.0 = Debug|Win32
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Release|x64.ActiveCfg = Release|x64
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Release|x64.Build.0 = Release|x64
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Release|x86.ActiveCfg = Release|Win32
+		{37EF98CA-2156-4ECB-A15D-52041DBAC78C}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9F80D9BF-39B0-44C0-A084-A3293924BB63}
+	EndGlobalSection
+EndGlobal
--- a/Chapter5/Huffmn/Huffmn.vcxproj
+++ b/Chapter5/Huffmn/Huffmn.vcxproj
@@ -18,16 +18,11 @@
      <Platform>x64</Platform>
    </ProjectConfiguration>
  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="app1-4.cpp">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
-    </ClCompile>
-  </ItemGroup>
  <PropertyGroup Label="Globals">
    <VCProjectVersion>17.0</VCProjectVersion>
    <Keyword>Win32Proj</Keyword>
-    <ProjectGuid>{7a2bd8ec-2595-4070-be3a-2bf2140848b2}</ProjectGuid>
-    <RootNamespace>app14</RootNamespace>
+    <ProjectGuid>{a456a451-7570-4d79-9836-04559d3e944b}</ProjectGuid>
+    <RootNamespace>Huffmn</RootNamespace>
    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -131,6 +126,11 @@
      <GenerateDebugInformation>true</GenerateDebugInformation>
    </Link>
  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="HumanTree.cpp">
+      <SDLCheck Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</SDLCheck>
+    </ClCompile>
+  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
--- a/Chapter5/Huffmn/Huffmn.vcxproj.filters
+++ b/Chapter5/Huffmn/Huffmn.vcxproj.filters
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="HumanTree.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Chapter5/Huffmn/HumanTree.cpp
+++ b/Chapter5/Huffmn/HumanTree.cpp
@@ -0,0 +1,165 @@
+#include"iostream"
+#include<iomanip>
+#include<string>
+using namespace std;
+
+struct HTNode
+{
+	int weight;													// 权值，设为整型
+	int parent;													// 双亲位置
+	int lchild;													// 左孩子位置
+	int rchild;													// 右孩子位置
+};
+
+
+void select(HTNode* HT, int k, int& i1, int& i2)					// 在前K-1个结点中选择权值最小的两个根结点i和j
+{
+	int m1, m2;
+	m1 = m2 = 32767; //
+	i1 = i2 = 0;
+	for (int j = 0; j < k; j++)
+	{
+		if (HT[j].weight < m1 && HT[j].parent == -1)
+		{
+			m2 = m1, i2 = i1;
+			m1 = HT[j].weight;
+			i1 = j;
+		}
+		else if (HT[j].weight < m2 && HT[j].parent == -1)
+		{
+			m2 = HT[j].weight;
+			i2 = j;
+		}
+	}
+}
+// 算法5.16															// 构造哈夫曼树
+void HuffmanTree(HTNode*& HT, int* w, int n)
+{																	// n是叶子结点的个数，w是叶子结点的权值数组
+	HTNode* p;
+	int k, i;
+	int i1, i2;
+	p = HT;
+	for (i = 0; i < 2 * n - 1; i++)
+	{																// 设置初始状态，所有结点的指针为空
+		HT[i].weight = 0;
+		HT[i].parent = -1;
+		HT[i].lchild = -1;
+		HT[i].rchild = -1;
+	}
+	for (i = 0; i < n; i++)
+	{																// 前n个结点的权值分别为个结点的权值
+		HT[i].weight = w[i];
+	}
+	for (k = n; k < 2 * n - 1; k++)
+	{																// 构造最优二叉树
+		select(HT, k, i1, i2);											// 在前K-1个结点中选择权值最小的两个根结点i1和i2
+		HT[i1].parent = k;
+		HT[i2].parent = k;
+		HT[k].weight = HT[i1].weight + HT[i2].weight;
+		HT[k].lchild = i1;
+		HT[k].rchild = i2;
+	}
+}
+
+
+void DispHT(HTNode* HT, int n)										// 显示哈夫曼树存储	
+{
+	HTNode* p;
+	p = HT;
+	cout << "k" << setw(7) << "Weight" << setw(7) << "parent"
+		<< setw(7) << "lchild" << setw(7) << "rchild" << endl;
+	for (int k = 0; k < 2 * n - 1; k++)
+	{
+		cout << k << setw(7) << (p + k)->weight << setw(7) << (p + k)->parent
+			<< setw(7) << (p + k)->lchild << setw(7) << (p + k)->rchild << endl;
+	}
+}
+
+//算法5.17															// 构建哈夫曼编码
+void CreateHFCode(HTNode* HT, int n, char** HC)
+{
+	int i, start, c, f;
+	char* cd;
+	cd = new char[n];
+	cd[n - 1] = '\0';
+	for (i = 0; i < n; i++)
+	{
+		start = n - 1;
+		c = i;
+		f = HT[i].parent;
+		while (f != -1)
+		{
+			if (HT[f].lchild == c)
+				cd[--start] = '0';
+			else
+				cd[--start] = '1';
+			c = f; f = HT[f].parent;
+		}
+		cout << endl;
+		HC[i] = new char[n - start];
+		HC[i] = &cd[start];
+		int j = 0;
+		while (HC[i][j] != '\0')										// 显示编码
+		{
+			cout << HC[i][j];
+			j++;
+		}
+
+	}
+	delete cd;
+	cout << endl;
+}
+
+
+int op;
+
+int main()
+{
+	int* w;															// 权值数组
+	int n;															// 权值个数
+	int i;															// 工作变量
+	HTNode* HT;														// 哈夫曼树
+	char** HC;
+	do
+	{
+		cout << "1-输入结点权值" << endl;
+		cout << "2-生成最优二叉树" << endl;
+		cout << "3-求哈夫曼编码" << endl;
+		cout << "4-退出程序" << endl;
+		cout << "请选择操作(1~4)：";
+		cout << "\b\b";
+		cin >> op;
+		switch (op)
+		{
+		case 1:
+			cout << "测试案例" << endl;
+			cout << "7,5,2,3,5,6" << endl;
+			cout << "请输入结点的个数：";
+			cin >> n;
+			w = new int[n];
+			cout << "请依次输入权值：" << endl;
+			for (i = 0; i < n; i++)
+			{
+				cout << "请输入第" << i + 1 << "个权值：";
+				cin >> w[i];
+			}
+			break;
+		case 2:
+			HT = new HTNode[2 * n - 1];										// 申请最优二叉树存储空间
+			HuffmanTree(HT, w, n);
+			cout << "创建的哈夫曼树为：\n";
+			DispHT(HT, n);
+			system("pause");
+			break;
+		case 3:
+			HC = new char* [n];											// 存储哈示曼编码
+			cout << "哈夫曼编码为：\n";
+			CreateHFCode(HT, n, HC);
+			break;
+		case 4:
+			cout << "结束运行，Bye-Bye!" << endl;
+			break;
+		}
+	} while (op != 4);
+	return 0;
+}
--- a/Chapter5/ThrBiTree/ThrBiTree.cpp
+++ b/Chapter5/ThrBiTree/ThrBiTree.cpp
@@ -0,0 +1,222 @@
+#include<iostream>//cout,cin
+#include<string>
+using namespace std;
+
+template<class DT>
+struct ThrBTNode
+{
+	DT  data;											// 数据域
+	int lflag;											// 左标志域
+	int rflag;											// 右标志域
+	ThrBTNode* lchild;								// 左指针域
+	ThrBTNode* rchild;								// 右指针域
+};
+
+
+template <class DT>										// 创建二叉树
+void CreateBiTree(ThrBTNode<DT>*& bt)
+{														// 按先序序列的顺序输入二叉树,#为空指针域标志;
+	char ch;
+	cin >> ch;											// 输入根结点的数据
+	if (ch == '#')											// # 表示指针为空，说明树为空
+		bt = NULL;
+	else
+	{
+		bt = new ThrBTNode<DT>;							// 新建结点
+		if (!bt)
+		{
+			cout << "申请内存失败！" << endl;
+			exit(-1);									// 申请内存失败退出
+		}
+		bt->lflag = 0;									// 非线索
+		bt->rflag = 0;									// 非线索
+		bt->data = ch;
+		CreateBiTree(bt->lchild);						// 递归创建根结点左子树
+		CreateBiTree(bt->rchild);						// 递归创建根结点右子树
+	}
+	return;
+}
+
+ThrBTNode<char>* pre;
+
+//算法5.13												中序线索化二叉树
+template <class DT>
+void InThread(ThrBTNode<DT>*& p)
+{
+
+	if (p != NULL)											// 结点非空
+	{
+		InThread(p->lchild);							// 中序线索化左子树
+		if (p->lchild == NULL)								// 结点无左孩子 
+		{
+			p->lflag = 1;									// 设置前驱线索标识
+			p->lchild = pre;								// 左孩子指向结点遍历前驱
+		}
+		if (pre->rchild == NULL)							// 结点无右孩子
+		{
+			pre->rflag = 1;								// 设置后继线索标识
+			pre->rchild = p;								// 右孩子指向结点遍历后继
+		}
+		pre = p;											// 前驱指向当前结点
+		InThread(p->rchild);								// 中序线索化右子树
+	}
+}
+
+
+template<class DT>										// 构建线索二叉树
+ThrBTNode<DT>* CreateInThread(ThrBTNode<DT>*& bt)
+{
+	ThrBTNode<DT>* root;
+	root = new ThrBTNode<DT>;								// 创建头结点
+	root->lflag = 0;
+	root->rflag = 1;
+	root->rchild = bt;
+	if (bt == NULL)
+		root->lchild = root;
+	else
+	{
+		root->lchild = bt;
+		pre = root;
+		InThread(bt);									// 中序线索化二叉树
+		pre->rchild = root;								// 设置循环链表
+		pre->rflag = 1;
+		root->rchild = pre;
+	}
+	return root;
+}
+
+
+
+
+//算法5.15												中序遍历中序线索二叉树
+template<class DT>
+void InThrBiTree(ThrBTNode<DT>* bt)
+{
+	ThrBTNode<DT>* p;
+	p = bt->lchild;										// 从根结点开始
+	while (p != bt)										// 结点非空
+	{
+		while (p->lflag == 0)								// 有左孩子
+			p = p->lchild;									// 一路左行
+		cout << p->data;									// 访问结点							
+		while (p->rflag == 1 && p->rchild != bt)				// 有后继线索且非空
+		{
+			p = p->rchild;								// 转向后继
+			cout << p->data << " ";							// 访问后继结点
+		}
+		p = p->rchild;								// 无后继线索，转向右子树	
+	}
+}
+
+template <class DT>										// 显示线索二叉树
+void DispBiTree(ThrBTNode<DT>* bt, int level)
+{
+	if (bt)												// 空二叉树不显示
+	{
+		DispBiTree(bt->rchild, level + 1);					// 显示右子树
+		cout << endl;										// 显示新行
+		for (int i = 0; i < level - 1; i++)
+			cout << "   ";									// 确保在第level列显示节点
+		cout << bt->data;									// 显示节点
+		DispBiTree(bt->lchild, level + 1);					// 显示左子树  
+		cout << endl;
+	}//if
+}//DisplayBTree
+
+//算法5.9												销毁二叉树
+template <class DT>
+void DestroyThrBiTree(ThrBTNode<DT>*& bt)
+{
+	if (bt)
+	{
+		DestroyThrBiTree(bt->lchild);
+		DestroyThrBiTree(bt->rchild);
+		delete bt;
+	}
+}
+
+void dispmenu()
+{															// 显示主菜单
+	cout << endl;
+	cout << "1-创建二叉树\n";
+	//cout<<"2-先序线索化二叉树的先序遍历\n";
+	//cout<<"3-先序遍历先序线索化二叉树\n";
+	cout << "4-中序线索化二叉树\n";
+	cout << "5-中序遍历中序线索二叉树\n";
+	cout << "6-显示二叉树\n";
+	cout << "7-退出\n";
+}
+
+// 测试数据
+string  fbt = "a b d # # e # # c f # # g # #";				// 满二叉树最后一层每个叶结点后有两个#
+string  cbt = "a b d # # e # # c # #";						// 完全二叉树每个叶结点后有两个#
+string  gbt = "a b # d # # c e # # #";						// 一般二叉树
+string  obt = "a b c d # # # # #";							// 左斜树
+
+int main()
+{
+
+	//char pause;
+	int level;
+	ThrBTNode<char>* bt;
+
+
+	system("cls");											// 清屏
+
+	int choice;
+	do
+	{
+		dispmenu();											//显示主菜单
+		cout << "Enter choice(1~7):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:											//创建二叉树 
+			cout << "测试数据参考：" << endl;
+			cout << "满二叉树：" << fbt << endl;
+			cout << "完全二叉树：" << cbt << endl;
+			cout << "一般二叉树：" << gbt << endl;
+			cout << "左斜二叉树：" << obt << endl;
+			cout << "请按先序序列的顺序输入二叉树,#为空指针域标志：" << endl;
+			CreateBiTree(bt);
+			break;
+		case 2://先序线索化二叉树
+
+			//PreThread(bt);
+			//cin.get(pause);
+			//system("pause");
+			break;
+		case 3://先序遍历先线索化二叉树
+
+			//PreOrDerBiTree(bt);
+			 //cin.get(pause);
+			//system("pause");
+			//breCreateInThread(bt);	
+		case 4:										//中序线索化二叉树
+			bt = CreateInThread(bt);
+			cout << "中序线索化成功！";
+			cout << endl;
+			break;
+		case 5:										//中序遍历中序线索二叉树
+			cout << "中序遍历序列为：" << endl;
+			cout << endl;
+			InThrBiTree(bt);
+			break;
+		case 6:											//显示二叉树
+			cout << "2-显示二叉树" << endl;
+			level = 1;
+			DispBiTree(bt, level);
+			cout << endl;
+			break;
+		case 7://退出
+			cout << "结束运行!" << endl;
+			DestroyThrBiTree(bt);
+			break;
+		default://非法选择
+			cout << "Invalid choice\n";
+			break;
+		}
+	} while (choice != 7);
+
+	return 0;
+}
--- a/Chapter5/ThrBiTree/ThrBiTree.vcxproj
+++ b/Chapter5/ThrBiTree/ThrBiTree.vcxproj
@@ -0,0 +1,135 @@
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+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
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+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{37ef98ca-2156-4ecb-a15d-52041dbac78c}</ProjectGuid>
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+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
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+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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--- a/Exercise/BiTreeExterned/BiTreeExterned.vcxproj.filters
+++ b/Exercise/BiTreeExterned/BiTreeExterned.vcxproj.filters
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--- a/Exercise/BiTreeExterned/bitree.cpp
+++ b/Exercise/BiTreeExterned/bitree.cpp
@@ -0,0 +1,136 @@
+#include<iostream>//cout,cin
+#include<string>
+using namespace std;
+#include"bitree.h"
+
+//测试参考数据
+string  fbt = "a b d # # e # # c f # # g # #";					// 满二叉树最后一层每个叶结点后有两个#
+string  cbt = "a b d # # e # # c # #";							// 完全二叉树每个叶结点后有两个#
+string  gbt = "a b # d # # c e # # #";							// 一般二叉树
+string  obt = "a b c d # # # # #";								// 左斜树1
+
+
+void dispmenu()
+{																//显示主菜单
+	cout << endl;
+	cout << "1-创建二叉树\n";
+	cout << "2-先序递归遍历二叉树\n";
+	cout << "3-中序递归遍历二叉树\n";
+	cout << "4-后序递归遍历二叉树\n";
+	cout << "5-层序遍历二叉树\n";
+	cout << "6-先序非递归遍历二叉树\n";
+	cout << "7-中序非递归遍历二叉树\n";
+	cout << "8-后序非递归遍历二叉树\n";
+	cout << "9-结点查询\n";
+	cout << "10-求二叉树高度\n";
+	cout << "11-求二叉树结点个数\n";
+	cout << "12-显示二叉树\n";
+	cout << "13-删除以值为x的结点的子树\n";
+	cout << "0 -退出\n";
+}
+
+int main()
+{
+	int level;
+	BTNode<char>* bt;
+
+	system("cls");													// 清屏
+
+	int choice;
+	do
+	{
+		dispmenu();													// 显示主菜单
+		cout << "Enter choice(1~12，0 退出):";
+		cin >> choice;
+		switch (choice)
+		{
+		case 1:													// 创建二叉树 
+			cout << "测试参考数据：" << endl;
+			cout << "满二叉树：" << fbt << endl;
+			cout << "完全二叉树：" << cbt << endl;
+			cout << "一般二叉树：" << gbt << endl;
+			cout << "左斜二叉树：" << obt << endl;
+			cout << "请按先序序列的顺序输入二叉树,#为空指针域标志：" << endl;
+			CreateBiTree(bt);
+			break;
+		case 2:												// 先序递归遍历二叉树
+			cout << "先序遍历序列为：" << endl;
+			PreOrDerBiTree(bt);
+			break;
+		case 3:													// 中序递归遍历二叉树
+			cout << "中序遍历序列为：" << endl;
+			InOrDerBiTree(bt);
+			cout << endl;
+			break;
+		case 4:												// 后序递归遍历二叉树
+			cout << "后序遍历序列为：" << endl;
+			PostOrDerBiTree(bt);
+			cout << endl;
+			break;
+		case 5:												// 层序遍历二叉树
+			cout << "层序遍历序列为：" << endl;
+			cout << endl;
+			LevelBiTree(bt);
+			break;
+		case 6:												// 先序非递归遍历二叉树
+			cout << "先序非递归遍历序列为：" << endl;
+			PreOrderBiTree_N(bt);
+			cout << endl;
+			break;
+		case 7:												// 中序非递归遍历二叉树
+			cout << "中序非递归遍历序列为：" << endl;
+			InOrderBiTree_N(bt);
+			cout << endl;
+			break;
+		case 8:												// 后序非递归遍历二叉树
+			cout << "后序非递归遍历序列为：" << endl;
+			cout << endl;
+			PostOrderBiTree_N(bt);
+			break;
+		case 9:												// 结点查询
+			char e;
+			BTNode<char>* p;
+			cout << "输入要查询的结点值：" << endl;
+			cin >> e;
+			p = Search(bt, e);
+			if (p)
+			{
+				cout << "找到！";
+				cout << p->data << endl;
+			}
+			else
+				cout << "未找到！" << endl;
+			cout << endl;
+			break;
+		case 10:												// 求二叉树高度
+			cout << "二叉树高度为：" << Depth(bt) << endl;
+			cout << endl;
+			break;
+		case 11:												//求二叉树结点个数
+			cout << "二叉树结点数为：" << NodeCount(bt) << endl;
+			cout << endl;
+			break;
+		case 12:												// 显示二叉树
+			cout << "2-显示二叉树" << endl;
+			level = 1;
+			DispBiTree(bt, level);
+			cout << endl;
+			break;
+		case 13:
+			cout << "输入结点的值：";
+			char x;
+			cin >> x;
+			DelChildWithRootX(bt, x);
+			break;
+		case 0:												// 退出
+			DestroyBiTree(bt);
+			cout << "结束运行Bye-Bye!" << endl;
+			break;
+		default:												// 无效选择
+			cout << "Invalid choice\n";
+			break;
+		}
+	} while (choice != 0);
+
+	return 0;
+}
--- a/Exercise/BiTreeExterned/bitree.h
+++ b/Exercise/BiTreeExterned/bitree.h
@@ -0,0 +1,436 @@
+template <class DT>
+struct BTNode
+{
+	DT data;		                			//数据域
+	BTNode* lchild;								//指向左子树的指针
+	BTNode* rchild;								//指向右子树的指针
+};
+
+//队列工具
+template <class DT>
+struct SqQueue											// 顺序队类
+{
+	BTNode<DT>** base;									// 队列首址
+	int front;											// 队头指针
+	int rear;											// 队尾指针
+	int queuesize;										// 队容量
+};
+
+//栈
+template <class DT>
+struct SqStack										// 顺序栈
+{
+	BTNode<DT>** base;								// 栈首址
+	int top;										// 栈顶指针
+	int stacksize;									// 栈容量
+};
+
+//算法5.1										先序遍历递归算法
+template <class DT>
+void PreOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		cout << bt->data << ' ';	     			//输出结点上的数据
+		PreOrDerBiTree(bt->lchild);				//递归的调用前序遍历左子树
+		PreOrDerBiTree(bt->rchild);				//递归的调用前序遍历右子树
+	}
+	return;
+}
+
+//算法5.2										中序遍历递归算法
+template <class DT>
+void InOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		InOrDerBiTree(bt->lchild);				//递归的调用中序遍历左子树
+		cout << bt->data << ' ';	     			//输出结点上的数据
+		InOrDerBiTree(bt->rchild);  			//递归的调用中序遍历右子树
+	}
+	return;
+}
+
+//算法5.3										后序遍历递归算法
+template <class DT>
+void PostOrDerBiTree(BTNode<DT>* bt)
+{
+	if (bt != NULL)
+	{
+		PostOrDerBiTree(bt->lchild);			//递归的调用后序遍历左子树
+		PostOrDerBiTree(bt->rchild);			//递归的调用后序遍历右子树
+		cout << bt->data << ' ';					//输出结点上的数据
+	}
+	return;
+}
+
+
+//算法5.4										层序遍历算法	
+template<class DT>
+void LevelBiTree(BTNode<DT>* bt)
+{
+	SqQueue<DT> Q;								// 创建一个队
+	int m = 20;
+	InitQueue(Q, m);
+	BTNode<DT>* p;
+	p = bt;
+	if (p) EnQueue(Q, p);							// 树非空，入队              
+	while (!QueueEmpty(Q))						// 队非空
+	{
+		DeQueue(Q, p);							// 出队
+		cout << p->data;							// 访问
+		if (p->lchild != NULL)						// 有左孩子
+			EnQueue(Q, p->lchild);				// 左孩子入队
+		if (p->rchild != NULL)						// 有右孩子
+			EnQueue(Q, p->rchild);				// 右孩子入队
+	}
+	DestroyQueue(Q);							// 销毁队列
+}
+
+
+//算法5.5										先序非遍历递归算法
+template <class DT>
+void PreOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	p = bt;
+	while (p != NULL || !StackEmpty(S))			// 树非空或栈非空
+	{
+		while (p != NULL)							// 结点非空
+		{
+			cout << p->data << ' ';					// 访问结点
+			Push(S, p);							// 入栈
+			p = p->lchild;						// 转左子树
+		}
+		if (!StackEmpty(S))						// 栈非空
+		{
+			Pop(S, p);							// 出栈
+			p = p->rchild;						    // 转出栈结点的右子树
+		}
+	}
+	DestroyStack(S);							//销毁栈
+}
+
+
+//算法5.6 中序非遍历递归算法
+template <class DT>
+void InOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建一个栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	p = bt;
+	while (p != NULL || !StackEmpty(S))			// 结点非空或栈非空
+	{
+		while (p != NULL)							// 结点非空
+		{
+			Push(S, p);							// 入栈
+			p = p->lchild;						// 转出栈结点右子树
+		}
+		if (!StackEmpty(S))						// 栈非空
+		{
+			Pop(S, p);							// 出栈
+			cout << p->data << ' ';					// 访问出栈结点
+			p = p->rchild;						// 转出栈结点的右子树
+		}
+	}
+	DestroyStack(S);							// 销毁栈
+}
+
+
+
+//算法5.7										后序非遍历递归算法
+template <class DT>
+void PostOrderBiTree_N(BTNode<DT>* bt)
+{
+	SqStack<DT> S;								// 创建一个栈
+	int m = 20;
+	InitStack(S, m);
+	BTNode<DT>* p;
+	BTNode<DT>* r;
+	p = bt;
+	bool flag;
+	do
+	{
+		while (p)								// 结点非空
+		{
+			Push(S, p);							// 结点入栈
+			p = p->lchild;						// 转左子树
+		}
+		r = NULL;									// 指向刚被访问点，初值为空
+		flag = true;								// true表示处理栈顶结点                     
+		while (!StackEmpty(S) && flag)			// 栈非空且当前处理的是栈顶结点
+		{
+			GetTop(S, p);						// 获取栈顶元素
+			if (p->rchild == r)					// 如果 当前结点是栈元素的右孩子
+			{
+				cout << p->data << ' ';				// 访问栈顶元素
+				Pop(S, p);						// 出栈
+				r = p;							// r指向被访问结点
+			}
+			else								 // 否则
+			{
+				p = p->rchild;					// 转栈顶元素右孩子
+				flag = false;						// 处理非栈顶结点
+			}
+		}
+	} while (!StackEmpty(S));						// 栈非空，循环
+	cout << endl;
+	DestroyStack(S);							// 销毁栈
+}
+
+
+//算法5.8                                      创建二叉树
+template <class DT>
+void CreateBiTree(BTNode<DT>*& bt)
+{
+	char ch;
+	cin >> ch;				                    // 输入根结点的数据
+	if (ch == '#')                                 // # 表示指针为空，说明树为空
+		bt = NULL;
+	else
+	{
+		bt = new BTNode<DT>;	                    // 申请内存
+		if (!bt)
+		{
+			cout << "申请内存失败！" << endl;
+			exit(-1);                           // 申请内存失败退出
+		}
+		bt->data = ch;
+		CreateBiTree(bt->lchild);               // 创建根结点左子树
+		CreateBiTree(bt->rchild);               // 创建根结点右子树
+	}
+	return;
+}
+
+
+//算法5.9 销毁二叉树
+template <class DT>
+void DestroyBiTree(BTNode<DT>*& bt)
+{
+	if (bt)                                     // 树非空
+	{
+		DestroyBiTree(bt->lchild);             // 销毁左子树
+		DestroyBiTree(bt->rchild);             // 销毁右子树
+		delete bt;
+	}
+}
+
+
+//算法5.10										结点查找
+
+template<class DT>
+BTNode<DT>* Search(BTNode<DT>* bt, DT e)		// 查找值为e的元素
+{
+	BTNode<DT>* p;
+	if (bt == NULL)								// 结点为空，返回
+		return NULL;
+	else if (bt->data == e)						// 找到，返回结点指针
+		return bt;
+	else										// 结点值不为e       
+	{
+		p = Search(bt->lchild, e);					// 在左子树上查找
+		if (p != NULL)								// 找到
+			return p;							// 返回结点指针
+		else									// 未找到
+			return Search(bt->rchild, e);		// 转右子树上查找
+	}
+}
+
+//算法5.11										求树深
+template <class DT>
+int Depth(BTNode<DT>* bt)
+{
+	int hl, hr;
+	if (bt == NULL)								// 树空
+		return 0;								// 深度为0
+	else										// 树非空
+	{
+
+		hl = Depth(bt->lchild);					// 求左子树深度
+		hr = Depth(bt->lchild);					// 求右子树深度
+		if (hl > hr)								// 左子树高
+			return hl + 1;						// 树高为左子树高加1
+		else return hr + 1;						// 左子树高,树高为左子树高加1
+	}
+}
+
+
+//算法5.12										结点计数
+template <class DT>
+int NodeCount(BTNode<DT>* bt)
+{
+	if (bt == NULL)								// 空树，结点数为0
+		return 0;
+	else										// 非空树，结点数为左、右子树结点数的和加1
+		return NodeCount(bt->lchild) + NodeCount(bt->rchild) + 1;
+}
+
+template <class DT>
+void DispBiTree(BTNode<DT>* bt, int level)        // 显示树
+{
+	if (bt)                                        //空二叉树不显示
+	{
+		DispBiTree(bt->rchild, level + 1);              //显示右子树
+		cout << endl;                                  //显示新行
+		for (int i = 0; i < level - 1; i++)
+			cout << "   ";                              //确保在第level列显示节点
+		cout << bt->data;                              //显示节点
+		DispBiTree(bt->lchild, level + 1);              //显示左子树  
+		cout << endl;
+	}//if
+}
+
+template <class DT>
+void DelChildWithRootX(BTNode<DT>*& bt, DT x) {
+	if (bt == NULL) return;
+	else {
+		if (bt->data == x) {
+			DestroyBiTree(bt);
+			bt = NULL;
+			return;
+		}
+		else {
+			DelChildWithRootX(bt->lchild, x);
+			DelChildWithRootX(bt->rchild, x);
+		}
+	}
+}
+
+template <class DT>
+int leftCount(BTNode<DT>* bt)
+{
+	if (bt->lchild == NULL && bt->rchild == NULL)								// 空树，结点数为0
+		return 0;
+	else										// 非空树，结点数为左、右子树结点数的和加1
+		return NodeCount(bt->lchild) + NodeCount(bt->rchild) + 1;
+}
+
+
+//【算法3.14】											初始化队列
+template <class DT>
+void InitQueue(SqQueue<DT>& Q, int m)
+{
+	Q.base = new BTNode<DT>*[m];							// 申请队列空间
+	if (Q.base == NULL)									// 申请空间失败
+	{
+		cout << "未创建成功！";
+		exit(1);										// 退出
+	}
+	Q.front = Q.rear = 0;									// 设置队列属性 
+	Q.queuesize = m;
+}
+
+
+//算法3.15】											销毁列列
+template <class DT>
+void DestroyQueue(SqQueue<DT>& Q)
+{
+	delete[] Q.base;									// 释放队列空间
+	Q.front = Q.rear = 0;									// 设置队列属性
+	Q.queuesize = 0;
+}
+
+
+//【算法3.16】											入队
+template<class DT>
+bool EnQueue(SqQueue<DT>& Q, BTNode<DT>* e)
+{
+	if ((Q.rear + 1) % Q.queuesize == Q.front)					// 队满
+		return false;									// 返回false
+	Q.base[Q.rear] = e;									// 出队
+	Q.rear = (Q.rear + 1) % Q.queuesize;						// 修改队列属性
+	return true;										// 返回true
+}
+
+//【算法3.17】											出队
+template<class DT>
+bool DeQueue(SqQueue<DT>& Q, BTNode<DT>*& e)
+{
+	if (Q.front == Q.rear)									// 队空
+		return false;
+	e = Q.base[Q.front];
+	Q.front = (Q.front + 1) % Q.queuesize;
+	return true;										// 删除成功，返回true
+}
+
+// 测队空
+template<class DT>
+bool QueueEmpty(SqQueue<DT> Q)
+{
+	if (Q.front == Q.rear)									// 队空
+		return true;									// 返回true
+	else												// 队不空
+		return false;									// 返回false
+}
+
+//【算法3.1】										初始化栈
+template <class DT>
+void InitStack(SqStack<DT>& S, int m)
+{
+	S.base = new BTNode<DT>*[m];						// 申请栈空间
+	if (S.base == NULL)
+	{
+		cout << "未创建成功！";
+		exit(1);
+	}
+	S.top = -1;										// 空栈
+	S.stacksize = m;									// 栈容量为m
+}
+
+
+//算法3.2】											销毁栈
+template <class DT>
+void DestroyStack(SqStack<DT>& S)//析构函数
+{
+	delete[] S.base;								//释放栈空间
+	S.top = -1;
+	S.stacksize = 0;
+}
+
+
+//【算法3.3】
+template<class DT>
+bool Push(SqStack<DT>& S, BTNode<DT>* e)
+{
+	if (S.top == S.stacksize - 1)						// 栈满，不能插入
+		return false;
+	S.top++;
+	S.base[S.top] = e;
+	return true;									// 插入成功，返回true
+}
+
+//【算法3.4】										出栈
+template<class DT>
+bool Pop(SqStack<DT>& S, BTNode<DT>*& e)
+{
+	if (S.top == -1)									//栈空
+		return false;
+	e = S.base[S.top];
+	S.top--;
+	return true;									// 出栈成功，返回true
+}
+
+template<class DT>									// 获取栈元素
+bool GetTop(SqStack<DT>& S, BTNode<DT>*& e)
+{
+	if (S.top == -1)									// 栈空，返回false
+		return false;
+	e = S.base[S.top];								// 取栈元素
+	return true;									// 返回true
+}
+
+
+// 测栈空
+template<class DT>
+bool StackEmpty(SqStack<DT> S)
+{
+	if (S.top == -1)									// 栈空，返回true
+		return true;
+	else											// 栈非空，返回false
+		return false;
+}
--- a/Exercise/Del_e_in_Linear_List/Del_e_in_Linear_List.sln
+++ b/Exercise/Del_e_in_Linear_List/Del_e_in_Linear_List.sln
@@ -0,0 +1,41 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Sequential_List", "Sequential_List\Sequential_List.vcxproj", "{5C50B77F-47BA-4F08-8881-E89E1C0735D3}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Linked_List", "Linked_List\Linked_List.vcxproj", "{E36A0D17-BE4F-4839-8226-C3D568D00AB3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Debug|x64.ActiveCfg = Debug|x64
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Debug|x64.Build.0 = Debug|x64
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Debug|x86.ActiveCfg = Debug|Win32
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Debug|x86.Build.0 = Debug|Win32
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Release|x64.ActiveCfg = Release|x64
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Release|x64.Build.0 = Release|x64
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Release|x86.ActiveCfg = Release|Win32
+		{5C50B77F-47BA-4F08-8881-E89E1C0735D3}.Release|x86.Build.0 = Release|Win32
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Debug|x64.ActiveCfg = Debug|x64
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Debug|x64.Build.0 = Debug|x64
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Debug|x86.ActiveCfg = Debug|Win32
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Debug|x86.Build.0 = Debug|Win32
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Release|x64.ActiveCfg = Release|x64
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Release|x64.Build.0 = Release|x64
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Release|x86.ActiveCfg = Release|Win32
+		{E36A0D17-BE4F-4839-8226-C3D568D00AB3}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3FAF92A0-59FA-4D3A-BE9A-5A96D63DD9CC}
+	EndGlobalSection
+EndGlobal
--- a/Exercise/Del_e_in_Linear_List/Linked_List/LinkList.h
+++ b/Exercise/Del_e_in_Linear_List/Linked_List/LinkList.h
@@ -0,0 +1,253 @@
+
+template <class DT>
+struct LNode										//链表结点
+{
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);							// 1.获取e的位序k
+	if (k > 1)											// 2.位序k大于1
+	{
+		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
+		return true;
+	}
+	else											// 3.元素e无前驱
+		return false;								// 返回false
+}
+
+//【算法2.14】										创建空单链表
+template <class DT>
+bool InitList(LNode<DT>*& L)
+{
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
+}
+
+//【算法2.15】										尾插法创建n的元素
+template <class DT>
+bool CreateList_1(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	{
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
+		p->next = s;
+		p = s;										// 2.5 工作指针指向 s
+	}
+	return true;									// 3.创建成功，返回true
+}
+
+//【算法2.16】										头插法创建n个元素
+template <class DT>
+bool CreateList_2(LNode<DT>* (&L), int n)
+{
+	int i;
+	LNode<DT>* s;
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	{
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
+		L->next = s;
+	}
+	return true;									// 1.创建成功，返回true
+}
+
+//【算法2.17】
+template <class DT>
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+{
+	LNode<DT>* p;
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	{
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
+	}
+	L = NULL;											// 2.头指针指向空
+}
+
+//【算法2.18】										获取第i个元素
+template<class DT>
+bool GetElem_i(LNode<DT>* L, int i, DT& e)
+{
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)									// 3 未找到，返回false
+		return false;
+	else											// 4. 找到
+	{
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
+	}
+}
+
+//【算法2.19】										查找值为e的元素位序
+template<class DT>
+int LocateElem_e(LNode<DT>* L, DT e)
+{
+
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
+	{
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
+	}
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
+	else
+		return j;									// 3.2 找到，返回位序
+}
+
+//【算法2.20】										插入第i个元素
+template<class DT>
+bool InsertElem_i(LNode<DT>*& L, int i, DT e)
+{
+
+	int j = 0;
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
+	{
+		LNode<DT>* s;
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		p->next = s;
+		return true;								// 3.2.4 插入成功，返回true
+	}
+
+}
+
+//【算法2.21】										删除第i个元素
+template<class DT>
+bool DeleElem_i(LNode<DT>* (&L), int i)
+{
+
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
+	{
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
+		delete q;
+		return true;								//4.3删除成功，返回true
+	}
+}
+
+
+//【算法2.22】										修改第i个元素值
+template<class DT>
+bool PutElem_i(LNode<DT>* (&L), int i, DT e)
+{
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)										// 3.元素不存在,返回false
+		return false;
+	else											// 4.定位成功
+	{
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
+	}
+}
+
+// 释放链表所占空间
+template<class DT>
+void ClearList(LNode<DT>* (&L))
+{
+
+	LNode<DT>* p;
+	while (L->next)									// 从首元结点开始，依次释放结点
+	{
+		p = L->next;
+		L->next = p->next;
+		delete p;
+	}
+	cout << endl << "表已清空!" << endl;
+}
+
+
+//【算法2.23】										测表长
+template<class DT>
+int ListLength(LNode<DT>* L)
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
+	{
+		len++; p = p->next;							// 结点数增1，指针后移
+	}
+	return len;										// 3.返回表长
+}
+
+//
+template<class DT>
+bool ListEmpty(LNode<DT>* L)						//测表空
+{
+	if (L->next == NULL)
+		return true;								//空表，返回1
+	else
+		return false;								//不空，返回0
+}
+
+
+//【算法2.24】										遍历表
+template <class DT>
+void DispList(LNode<DT>* L)							// 显示表内容
+{
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L;										// 从首元结点开始遍历
+	while (p->next)										// 2.依次输出各结点值
+	{
+		p = p->next; cout << p->data << "\t";
+
+
+	}
+	cout << endl;
+}
--- a/Exercise/Del_e_in_Linear_List/Linked_List/Linked_List.vcxproj
+++ b/Exercise/Del_e_in_Linear_List/Linked_List/Linked_List.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{e36a0d17-be4f-4839-8226-c3d568d00ab3}</ProjectGuid>
+    <RootNamespace>LinkedList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
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+    <ConfigurationType>Application</ConfigurationType>
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+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
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+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
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+    </Link>
+  </ItemDefinitionGroup>
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+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
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+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Exercise/Del_e_in_Linear_List/Linked_List/Linked_List.vcxproj.filters
+++ b/Exercise/Del_e_in_Linear_List/Linked_List/Linked_List.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
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+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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+  </ItemGroup>
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+      <Filter>源文件</Filter>
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+  </ItemGroup>
+</Project>
--- a/Exercise/Del_e_in_Linear_List/Linked_List/main.cpp
+++ b/Exercise/Del_e_in_Linear_List/Linked_List/main.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+using namespace std;
+#include "LinkList.h"
+template <class DT>
+void DeleElem_e(LNode<DT>*& L, int e)
+{
+	for (int i = 1; i <= L.length; i++)
+	{
+		int n;
+		GetElem_i(L, i, n);
+		if (e == n) DeleElem_i(L, i--);
+	}
+}
+int main()
+{
+	int i;
+	LNode<int>* L;
+	InitList(L);
+	int length;
+	cout << "请输入要创建的元素个数:";
+	cin >> length;
+	CreateList_1(L, length);
+	cout << "创建的顺序表元素为：\n";
+	DispList(L);
+	cout << endl;
+	int e;
+	cout << "请输入要删除的元素的值:";
+	cin >> e;
+	DeleElem_e(L, e);
+	cout << "删除后的顺序表元素为：\n";
+	DispList(L);
+	cout << endl;
+	return 0;
+}
--- a/Exercise/Del_e_in_Linear_List/Sequential_List/Sequential_List.vcxproj
+++ b/Exercise/Del_e_in_Linear_List/Sequential_List/Sequential_List.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{5c50b77f-47ba-4f08-8881-e89e1c0735d3}</ProjectGuid>
+    <RootNamespace>SequentialList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="SqList.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Exercise/Del_e_in_Linear_List/Sequential_List/Sequential_List.vcxproj.filters
+++ b/Exercise/Del_e_in_Linear_List/Sequential_List/Sequential_List.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqList.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Exercise/Del_e_in_Linear_List/Sequential_List/SqList.h
+++ b/Exercise/Del_e_in_Linear_List/Sequential_List/SqList.h
@@ -0,0 +1,175 @@
+template <class DT>
+struct SqList									// 顺序表
+{
+	DT* elem;									// 表首址
+	int length;									// 表长
+	int size;									// 表容量
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(SqList<DT> L, DT e, DT& pre_e)				// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);					//
+	if (k > 1)
+	{
+		GetElem_i(L, k - 1, pre_e);
+		return false;
+	}
+	else
+		return true;
+}
+
+//【算法2.2】									初始化
+template <class DT>
+bool InitList(SqList<DT>& L, int m)
+{
+	L.elem = new DT[m];							// 申请表空间
+	if (L.elem == NULL)
+	{
+		cout << "未创建成功！";					// 申请不成功，退出
+		exit(1);
+	}
+	L.length = 0;									// 申请成功，属性赋值。空表，表长为0 
+	L.size = m;									// 表容量为m
+	return true;
+}
+
+//【算法2.3】									创建表元素
+template <class DT>
+bool CreateList(SqList<DT>& L, int n)
+{
+	int i;
+	if (n > L.size)								// 1.元素个数大于表容量，不能创建。
+	{
+		cout << "元素个数大于表长，不能创建！" << endl;
+		return false;
+	}
+	cout << "请依次输入" << n << "个元素值：" << endl;	// 2.依位序输入各元素值
+	for (i = 1; i <= n; i++)
+		cin >> L.elem[i - 1];
+	L.length = n;									// 3.表长为创建的元素个数
+	return true;
+}
+
+//【算法2.4】									销毁顺序表
+template <class DT>
+void DestroyList(SqList<DT>& L)
+{
+	delete[] L.elem;							// 1.释放表空间
+	L.length = 0;									// 2.属性赋值
+	L.size = 0;
+}
+
+//【算法2.5】									获取第i个元素值
+template<class DT>
+bool GetElem_i(SqList<DT> L, int i, DT& e)
+{
+	if (i<1 || i>L.length)						// 1.位序不合理，返回false
+	{
+		cout << "该元素不存在！" << endl;
+		return false;
+	}
+	e = L.elem[i - 1];								// 2. 否则，获取第i个元素值
+	return true;								// 返回true
+}
+
+//【算法2.6】									按值查找
+template<class DT>
+int LocateElem_e(SqList<DT> L, DT e)
+{
+	for (int i = 1; i <= L.length; i++)				// 顺序查找
+		if (L.elem[i - 1] == e)						// 1.找到
+			return i;							// 返回元素位序
+	return 0;									// 2.未找到，返回0
+}
+
+//【算法2.7】
+template<class DT>
+bool InsertElem_i(SqList<DT>& L, int i, DT e)
+{
+	if (L.length >= L.size)						// 1.表满，不能插入
+		return false;
+	if (i<1 || i>L.length + 1)						// 2.插入位置不合理，不能插入
+		return false;
+	for (int j = L.length; j >= i; j--)				// 3. an~ai依次后移
+		L.elem[j] = L.elem[j - 1];
+	L.elem[i - 1] = e;
+	L.length++;
+	return true;								// 插入成功，返回true
+}
+
+//【算法2.8】									删除第i个元素
+template<class DT>
+bool DeleElem_i(SqList<DT>& L, int i)
+{
+	if (L.length == 0)								// 1.表空，不能删除
+		return false;
+	if (i<1 || i>L.length)						// 2.删除位置不合理，不能插入
+		return false;
+	for (int j = i; j < L.length; j++)				// 3. ai+1~an依次前移
+		L.elem[j - 1] = L.elem[j];
+	L.length--;
+	return true;								// 删除成功，返回true
+}
+
+
+//【算法2.9】
+template<class DT>
+bool PutElem(SqList<DT>& L, int i, DT e)			// 修改第i个元素的值
+{
+	if (i<1 || i>L.length)						// 1.位序不合理，不能修改，
+		return false;							// 返回false
+	L.elem[i - 1] = e;								// 2.重置第i个元素值
+	return true;								// 3.修改成功，返回true
+}
+
+// 清空顺序表
+template<class DT>
+void ClearList(SqList<DT>& L)
+{
+	L.length = 0;									 // 空表，表长为0
+}
+
+
+// 测表长
+template<class DT>
+int ListLength(SqList<DT> L)
+{
+	return L.length;
+}
+
+
+template<class DT>
+bool ListEmpty(SqList<DT> L)					// 测表空
+{
+	if (L.length == 0)								 // 空表，返回true
+		return true;
+	else
+		return false;							// 非空表，返回false
+}
+
+template<class DT>
+bool ListFull(SqList<DT> L)
+{
+	if (L.length == L.size)						// 表满，返回true
+		return true;
+	else
+		return false;							// 表不满，返回false
+}
+
+//【算法2.10】									遍历输出
+template <class DT>
+void DispList(SqList<DT> L)
+{
+	int i;
+	for (i = 1; i <= L.length; i++)					// 依位序输出元素值
+	{
+		cout << L.elem[i - 1] << "\t";
+
+	}
+	cout << endl;
+}
+
+
--- a/Exercise/Del_e_in_Linear_List/Sequential_List/main.cpp
+++ b/Exercise/Del_e_in_Linear_List/Sequential_List/main.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+using namespace std;
+#include "SqList.h"
+template <class DT>
+void DeleElem_e(SqList<DT>& L, int e)
+{
+	for (int i = 1; i <= L.length; i++)
+	{
+		int n;
+		GetElem_i(L, i, n);
+		if (e == n) DeleElem_i(L, i--);
+	}
+}
+int main()
+{
+	int i;
+	SqList<int> L;
+	InitList(L, 32);
+	cout << "请输入要创建的元素个数:";
+	cin >> i;
+	cout << endl;
+	CreateList(L, i);
+	cout << "创建的顺序表元素为：\n";
+	DispList(L);
+	cout << endl;
+	int e;
+	cout << "请输入要删除的元素的值:";
+	cin >> e;
+	DeleElem_e(L, e);
+	cout << "删除后的顺序表元素为：\n";
+	DispList(L);
+	cout << endl;
+	return 0;
+}
--- a/Exercise/Intersection_Union/Intersection_Union.sln
+++ b/Exercise/Intersection_Union/Intersection_Union.sln
@@ -0,0 +1,41 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Sequential_List", "Sequential_List\Sequential_List.vcxproj", "{B4E4A6F7-1B97-421C-98BB-79482B2743FE}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Linked_List", "Linked_List\Linked_List.vcxproj", "{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x64.ActiveCfg = Debug|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x64.Build.0 = Debug|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x86.ActiveCfg = Debug|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x86.Build.0 = Debug|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x64.ActiveCfg = Release|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x64.Build.0 = Release|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x86.ActiveCfg = Release|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x86.Build.0 = Release|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x64.ActiveCfg = Debug|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x64.Build.0 = Debug|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x86.ActiveCfg = Debug|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x86.Build.0 = Debug|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x64.ActiveCfg = Release|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x64.Build.0 = Release|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x86.ActiveCfg = Release|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {413D1D02-E71E-45AC-8680-BA6E93C42BA8}
+	EndGlobalSection
+EndGlobal
--- a/Exercise/Intersection_Union/Linked_List/LinkList.h
+++ b/Exercise/Intersection_Union/Linked_List/LinkList.h
@@ -0,0 +1,253 @@
+
+template <class DT>
+struct LNode										//链表结点
+{
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);							// 1.获取e的位序k
+	if (k > 1)											// 2.位序k大于1
+	{
+		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
+		return true;
+	}
+	else											// 3.元素e无前驱
+		return false;								// 返回false
+}
+
+//【算法2.14】										创建空单链表
+template <class DT>
+bool InitList(LNode<DT>*& L)
+{
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
+}
+
+//【算法2.15】										尾插法创建n的元素
+template <class DT>
+bool CreateList_1(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	{
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
+		p->next = s;
+		p = s;										// 2.5 工作指针指向 s
+	}
+	return true;									// 3.创建成功，返回true
+}
+
+//【算法2.16】										头插法创建n个元素
+template <class DT>
+bool CreateList_2(LNode<DT>* (&L), int n)
+{
+	int i;
+	LNode<DT>* s;
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	{
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
+		L->next = s;
+	}
+	return true;									// 1.创建成功，返回true
+}
+
+//【算法2.17】
+template <class DT>
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+{
+	LNode<DT>* p;
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	{
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
+	}
+	L = NULL;											// 2.头指针指向空
+}
+
+//【算法2.18】										获取第i个元素
+template<class DT>
+bool GetElem_i(LNode<DT>* L, int i, DT& e)
+{
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)									// 3 未找到，返回false
+		return false;
+	else											// 4. 找到
+	{
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
+	}
+}
+
+//【算法2.19】										查找值为e的元素位序
+template<class DT>
+int LocateElem_e(LNode<DT>* L, DT e)
+{
+
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
+	{
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
+	}
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
+	else
+		return j;									// 3.2 找到，返回位序
+}
+
+//【算法2.20】										插入第i个元素
+template<class DT>
+bool InsertElem_i(LNode<DT>*& L, int i, DT e)
+{
+
+	int j = 0;
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
+	{
+		LNode<DT>* s;
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		p->next = s;
+		return true;								// 3.2.4 插入成功，返回true
+	}
+
+}
+
+//【算法2.21】										删除第i个元素
+template<class DT>
+bool DeleElem_i(LNode<DT>* (&L), int i)
+{
+
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
+	{
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
+		delete q;
+		return true;								//4.3删除成功，返回true
+	}
+}
+
+
+//【算法2.22】										修改第i个元素值
+template<class DT>
+bool PutElem_i(LNode<DT>* (&L), int i, DT e)
+{
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)										// 3.元素不存在,返回false
+		return false;
+	else											// 4.定位成功
+	{
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
+	}
+}
+
+// 释放链表所占空间
+template<class DT>
+void ClearList(LNode<DT>* (&L))
+{
+
+	LNode<DT>* p;
+	while (L->next)									// 从首元结点开始，依次释放结点
+	{
+		p = L->next;
+		L->next = p->next;
+		delete p;
+	}
+	cout << endl << "表已清空!" << endl;
+}
+
+
+//【算法2.23】										测表长
+template<class DT>
+int ListLength(LNode<DT>* L)
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
+	{
+		len++; p = p->next;							// 结点数增1，指针后移
+	}
+	return len;										// 3.返回表长
+}
+
+//
+template<class DT>
+bool ListEmpty(LNode<DT>* L)						//测表空
+{
+	if (L->next == NULL)
+		return true;								//空表，返回1
+	else
+		return false;								//不空，返回0
+}
+
+
+//【算法2.24】										遍历表
+template <class DT>
+void DispList(LNode<DT>* L)							// 显示表内容
+{
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L;										// 从首元结点开始遍历
+	while (p->next)										// 2.依次输出各结点值
+	{
+		p = p->next; cout << p->data << "\t";
+
+
+	}
+	cout << endl;
+}
--- a/Exercise/Intersection_Union/Linked_List/Linked_List.vcxproj
+++ b/Exercise/Intersection_Union/Linked_List/Linked_List.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
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+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{b2eef80b-772e-44e2-856d-c8def3242ee3}</ProjectGuid>
+    <RootNamespace>LinkedList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
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+      <SubSystem>Console</SubSystem>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+      <WarningLevel>Level3</WarningLevel>
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+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Exercise/Intersection_Union/Linked_List/Linked_List.vcxproj.filters
+++ b/Exercise/Intersection_Union/Linked_List/Linked_List.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Exercise/Intersection_Union/Linked_List/main.cpp
+++ b/Exercise/Intersection_Union/Linked_List/main.cpp
@@ -0,0 +1,80 @@
+#include <iostream>
+using namespace std;
+#include "LinkList.h"
+template <class DT>
+bool CreateListNoRepeat(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)
+	{
+		int temp;
+		cin >> temp;
+		if (LocateElem_e(L, temp)) i--;
+		else
+		{
+			s = new LNode<DT>;
+			if (!s) return false;
+			s->data = temp;
+			s->next = p->next;
+			p->next = s;
+			p = s;
+		}
+	}
+	return true;
+}
+template <class DT>
+void Union(LNode<DT>*& A, LNode<DT>*& B, int length_a, int length_b)
+{
+	for (int i = 1; i <= length_b; ++i) // as "i = 0" is the head node
+	{
+		int temp;
+		GetElem_i(B, i, temp); // You should manually get the element instead of using B.elem[i]
+		if (LocateElem_e(A, temp) == 0) InsertElem_i(A, ++length_a, temp); // ++length_a to always insert at the end
+	}
+}
+template <class DT>
+void Intersection(LNode<DT>*& A, LNode<DT>*& B, int length_a)
+{
+	int k = 0;
+	for (int i = 1; i <= length_a; ++i)
+	{
+		int temp;
+		GetElem_i(A, i, temp);
+		if (LocateElem_e(B, temp) == 0)
+		{
+			DeleElem_i(A, i--);
+			length_a--;
+		}
+	}
+}
+int main()
+{
+	LNode<int>* A;
+	LNode<int>* B;
+	InitList(A);
+	InitList(B);
+	int length_a, length_b;
+	cout << "请输入集合A的元素个数: ";
+	cin >> length_a;
+	CreateListNoRepeat(A, length_a);
+	cout << "请输入集合B的元素个数: ";
+	cin >> length_b;
+	CreateListNoRepeat(B, length_b);
+	cout << "集合A: ";
+	DispList(A);
+	cout << "集合B: ";
+	DispList(B);
+	Union(A, B, length_a, length_b); // You should manually pass the length of the list instead of using A.length
+	cout << "A∪B: ";
+	DispList(A);
+	while (true) if (!DeleElem_i(A, length_a + 1)) break; // Delete elements after the original list A
+	Intersection(A, B, length_a);
+	cout << "A∩B: ";
+	DispList(A);
+	DestroyList(A);
+	DestroyList(B);
+	return 0;
+}
--- a/Exercise/Intersection_Union/Sequential_List/Sequential_List.vcxproj
+++ b/Exercise/Intersection_Union/Sequential_List/Sequential_List.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{b4e4a6f7-1b97-421c-98bb-79482b2743fe}</ProjectGuid>
+    <RootNamespace>SequentialList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqList.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Exercise/Intersection_Union/Sequential_List/Sequential_List.vcxproj.filters
+++ b/Exercise/Intersection_Union/Sequential_List/Sequential_List.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="SqList.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
--- a/Exercise/Intersection_Union/Sequential_List/SqList.h
+++ b/Exercise/Intersection_Union/Sequential_List/SqList.h
@@ -0,0 +1,175 @@
+template <class DT>
+struct SqList									// 顺序表
+{
+	DT* elem;									// 表首址
+	int length;									// 表长
+	int size;									// 表容量
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(SqList<DT> L, DT e, DT& pre_e)				// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);					//
+	if (k > 1)
+	{
+		GetElem_i(L, k - 1, pre_e);
+		return false;
+	}
+	else
+		return true;
+}
+
+//【算法2.2】									初始化
+template <class DT>
+bool InitList(SqList<DT>& L, int m)
+{
+	L.elem = new DT[m];							// 申请表空间
+	if (L.elem == NULL)
+	{
+		cout << "未创建成功！";					// 申请不成功，退出
+		exit(1);
+	}
+	L.length = 0;									// 申请成功，属性赋值。空表，表长为0 
+	L.size = m;									// 表容量为m
+	return true;
+}
+
+//【算法2.3】									创建表元素
+template <class DT>
+bool CreateList(SqList<DT>& L, int n)
+{
+	int i;
+	if (n > L.size)								// 1.元素个数大于表容量，不能创建。
+	{
+		cout << "元素个数大于表长，不能创建！" << endl;
+		return false;
+	}
+	cout << "请依次输入" << n << "个元素值：" << endl;	// 2.依位序输入各元素值
+	for (i = 1; i <= n; i++)
+		cin >> L.elem[i - 1];
+	L.length = n;									// 3.表长为创建的元素个数
+	return true;
+}
+
+//【算法2.4】									销毁顺序表
+template <class DT>
+void DestroyList(SqList<DT>& L)
+{
+	delete[] L.elem;							// 1.释放表空间
+	L.length = 0;									// 2.属性赋值
+	L.size = 0;
+}
+
+//【算法2.5】									获取第i个元素值
+template<class DT>
+bool GetElem_i(SqList<DT> L, int i, DT& e)
+{
+	if (i<1 || i>L.length)						// 1.位序不合理，返回false
+	{
+		cout << "该元素不存在！" << endl;
+		return false;
+	}
+	e = L.elem[i - 1];								// 2. 否则，获取第i个元素值
+	return true;								// 返回true
+}
+
+//【算法2.6】									按值查找
+template<class DT>
+int LocateElem_e(SqList<DT> L, DT e)
+{
+	for (int i = 1; i <= L.length; i++)				// 顺序查找
+		if (L.elem[i - 1] == e)						// 1.找到
+			return i;							// 返回元素位序
+	return 0;									// 2.未找到，返回0
+}
+
+//【算法2.7】
+template<class DT>
+bool InsertElem_i(SqList<DT>& L, int i, DT e)
+{
+	if (L.length >= L.size)						// 1.表满，不能插入
+		return false;
+	if (i<1 || i>L.length + 1)						// 2.插入位置不合理，不能插入
+		return false;
+	for (int j = L.length; j >= i; j--)				// 3. an~ai依次后移
+		L.elem[j] = L.elem[j - 1];
+	L.elem[i - 1] = e;
+	L.length++;
+	return true;								// 插入成功，返回true
+}
+
+//【算法2.8】									删除第i个元素
+template<class DT>
+bool DeleElem_i(SqList<DT>& L, int i)
+{
+	if (L.length == 0)								// 1.表空，不能删除
+		return false;
+	if (i<1 || i>L.length)						// 2.删除位置不合理，不能插入
+		return false;
+	for (int j = i; j < L.length; j++)				// 3. ai+1~an依次前移
+		L.elem[j - 1] = L.elem[j];
+	L.length--;
+	return true;								// 删除成功，返回true
+}
+
+
+//【算法2.9】
+template<class DT>
+bool PutElem(SqList<DT>& L, int i, DT e)			// 修改第i个元素的值
+{
+	if (i<1 || i>L.length)						// 1.位序不合理，不能修改，
+		return false;							// 返回false
+	L.elem[i - 1] = e;								// 2.重置第i个元素值
+	return true;								// 3.修改成功，返回true
+}
+
+// 清空顺序表
+template<class DT>
+void ClearList(SqList<DT>& L)
+{
+	L.length = 0;									 // 空表，表长为0
+}
+
+
+// 测表长
+template<class DT>
+int ListLength(SqList<DT> L)
+{
+	return L.length;
+}
+
+
+template<class DT>
+bool ListEmpty(SqList<DT> L)					// 测表空
+{
+	if (L.length == 0)								 // 空表，返回true
+		return true;
+	else
+		return false;							// 非空表，返回false
+}
+
+template<class DT>
+bool ListFull(SqList<DT> L)
+{
+	if (L.length == L.size)						// 表满，返回true
+		return true;
+	else
+		return false;							// 表不满，返回false
+}
+
+//【算法2.10】									遍历输出
+template <class DT>
+void DispList(SqList<DT> L)
+{
+	int i;
+	for (i = 1; i <= L.length; i++)					// 依位序输出元素值
+	{
+		cout << L.elem[i - 1] << "\t";
+
+	}
+	cout << endl;
+}
+
+
--- a/Exercise/Intersection_Union/Sequential_List/main.cpp
+++ b/Exercise/Intersection_Union/Sequential_List/main.cpp
@@ -0,0 +1,64 @@
+#include <iostream>
+using namespace std;
+#include "SqList.h"
+template <class DT>
+bool CreateListNoRepeat(SqList<DT>& L, int n)
+{
+	int i;
+	if (n > L.size)
+	{
+		cout << "元素个数大于表长，不能创建！" << endl;
+		return false;
+	}
+	cout << "请依次输入" << n << "个元素值：" << endl;
+	for (i = 1; i <= n; i++)
+	{
+		int temp;
+		cin >> temp;
+		if (LocateElem_e(L, temp) > 0) i--;
+		else L.elem[i - 1] = temp;
+		L.length++;
+	}
+	L.length = n;
+	return true;
+}
+template <class DT>
+void Union(SqList<DT>& A, const SqList<DT>& B)
+{
+	for (int i = 0; i < B.length; ++i) if (LocateElem_e(A, B.elem[i]) == 0) InsertElem_i(A, A.length + 1, B.elem[i]);
+}
+template <class DT>
+void Intersection(SqList<DT>& A, const SqList<DT>& B)
+{
+	int k = 0;
+	for (int i = 0; i < A.length; ++i) if (LocateElem_e(B, A.elem[i]) > 0) A.elem[k++] = A.elem[i];
+	A.length = k;
+}
+int main()
+{
+	SqList<int> A;
+	SqList<int> B;
+	InitList(A, 32);
+	InitList(B, 32);
+	int length_a, length_b;
+	cout << "请输入集合A的元素个数: ";
+	cin >> length_a;
+	CreateListNoRepeat(A, length_a);
+	cout << "请输入集合B的元素个数: ";
+	cin >> length_b;
+	CreateListNoRepeat(B, length_b);
+	cout << "集合A: ";
+	DispList(A);
+	cout << "集合B: ";
+	DispList(B);
+	Union(A, B);
+	cout << "A∪B: ";
+	DispList(A);
+	A.length = length_a; // Reset A to its original length, no need to delete the elements
+	Intersection(A, B);
+	cout << "A∩B: ";
+	DispList(A);
+	DestroyList(A);
+	DestroyList(B);
+	return 0;
+}
--- a/Exercise/LinkListOperation/LinkList.h
+++ b/Exercise/LinkListOperation/LinkList.h
@@ -0,0 +1,253 @@
+
+template <class DT>
+struct LNode										//链表结点
+{
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);							// 1.获取e的位序k
+	if (k > 1)											// 2.位序k大于1
+	{
+		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
+		return true;
+	}
+	else											// 3.元素e无前驱
+		return false;								// 返回false
+}
+
+//【算法2.14】										创建空单链表
+template <class DT>
+bool InitList(LNode<DT>*& L)
+{
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
+}
+
+//【算法2.15】										尾插法创建n的元素
+template <class DT>
+bool CreateList_1(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	{
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
+		p->next = s;
+		p = s;										// 2.5 工作指针指向 s
+	}
+	return true;									// 3.创建成功，返回true
+}
+
+//【算法2.16】										头插法创建n个元素
+template <class DT>
+bool CreateList_2(LNode<DT>* (&L), int n)
+{
+	int i;
+	LNode<DT>* s;
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	{
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
+		L->next = s;
+	}
+	return true;									// 1.创建成功，返回true
+}
+
+//【算法2.17】
+template <class DT>
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+{
+	LNode<DT>* p;
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	{
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
+	}
+	L = NULL;											// 2.头指针指向空
+}
+
+//【算法2.18】										获取第i个元素
+template<class DT>
+bool GetElem_i(LNode<DT>* L, int i, DT& e)
+{
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)									// 3 未找到，返回false
+		return false;
+	else											// 4. 找到
+	{
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
+	}
+}
+
+//【算法2.19】										查找值为e的元素位序
+template<class DT>
+int LocateElem_e(LNode<DT>* L, DT e)
+{
+
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
+	{
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
+	}
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
+	else
+		return j;									// 3.2 找到，返回位序
+}
+
+//【算法2.20】										插入第i个元素
+template<class DT>
+bool InsertElem_i(LNode<DT>*& L, int i, DT e)
+{
+
+	int j = 0;
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
+	{
+		LNode<DT>* s;
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		p->next = s;
+		return true;								// 3.2.4 插入成功，返回true
+	}
+
+}
+
+//【算法2.21】										删除第i个元素
+template<class DT>
+bool DeleElem_i(LNode<DT>* (&L), int i)
+{
+
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
+	{
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
+		delete q;
+		return true;								//4.3删除成功，返回true
+	}
+}
+
+
+//【算法2.22】										修改第i个元素值
+template<class DT>
+bool PutElem_i(LNode<DT>* (&L), int i, DT e)
+{
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)										// 3.元素不存在,返回false
+		return false;
+	else											// 4.定位成功
+	{
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
+	}
+}
+
+// 释放链表所占空间
+template<class DT>
+void ClearList(LNode<DT>* (&L))
+{
+
+	LNode<DT>* p;
+	while (L->next)									// 从首元结点开始，依次释放结点
+	{
+		p = L->next;
+		L->next = p->next;
+		delete p;
+	}
+	cout << endl << "表已清空!" << endl;
+}
+
+
+//【算法2.23】										测表长
+template<class DT>
+int ListLength(LNode<DT>* L)
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
+	{
+		len++; p = p->next;							// 结点数增1，指针后移
+	}
+	return len;										// 3.返回表长
+}
+
+//
+template<class DT>
+bool ListEmpty(LNode<DT>* L)						//测表空
+{
+	if (L->next == NULL)
+		return true;								//空表，返回1
+	else
+		return false;								//不空，返回0
+}
+
+
+//【算法2.24】										遍历表
+template <class DT>
+void DispList(LNode<DT>* L)							// 显示表内容
+{
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L;										// 从首元结点开始遍历
+	while (p->next)										// 2.依次输出各结点值
+	{
+		p = p->next; cout << p->data << "\t";
+
+
+	}
+	cout << endl;
+}
--- a/Exercise/LinkListOperation/LinkListOperation.sln
+++ b/Exercise/LinkListOperation/LinkListOperation.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "LinkListOperation", "LinkListOperation.vcxproj", "{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Debug|x64.ActiveCfg = Debug|x64
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Debug|x64.Build.0 = Debug|x64
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Debug|x86.ActiveCfg = Debug|Win32
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Debug|x86.Build.0 = Debug|Win32
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Release|x64.ActiveCfg = Release|x64
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Release|x64.Build.0 = Release|x64
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Release|x86.ActiveCfg = Release|Win32
+		{BAA96EFE-86CD-47EA-8D5B-CAF1CC77BDC6}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {E04AA2D6-0453-4D15-9DFB-2771EC700397}
+	EndGlobalSection
+EndGlobal
--- a/Exercise/LinkListOperation/LinkListOperation.vcxproj
+++ b/Exercise/LinkListOperation/LinkListOperation.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{baa96efe-86cd-47ea-8d5b-caf1cc77bdc6}</ProjectGuid>
+    <RootNamespace>LinkListOperation</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Exercise/LinkListOperation/LinkListOperation.vcxproj.filters
+++ b/Exercise/LinkListOperation/LinkListOperation.vcxproj.filters
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
--- a/Exercise/LinkListOperation/main.cpp
+++ b/Exercise/LinkListOperation/main.cpp
@@ -0,0 +1,104 @@
+#include <iostream>
+using namespace std;
+#include "LinkList.h"
+template <class DT>
+bool CreateOrderedList(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)
+	{
+		s = new LNode<DT>;
+		if (!s) return false;
+		cin >> s->data;
+		if (s->data >= p->data || p == NULL)
+		{
+			s->next = p->next;
+			p->next = s;
+			p = s;
+		}
+		else i--;
+	}
+	return true;
+}
+template <class DT>
+void InsertElementToOrderedList(LNode<DT>*& L, int n, int length)
+{
+	LNode<DT>* p;
+	p = L->next;
+	for (int i = 1; i <= length; i++)
+	{
+		if ((p->data) > n)
+		{
+			InsertElem_i(L, i, n);
+			break;
+		}
+		else if (p->next == NULL)
+		{
+			InsertElem_i(L, i + 1, n);
+			break;
+		}
+		else p = p->next;
+	}
+}
+template <class DT>
+void MergeTwoOrderedLists(LNode<DT>*& L1, LNode<DT>*& L2)
+{
+	LNode<DT>* p, * q, * s;
+	p = L1->next;
+	q = L1->next->next;
+	s = L2->next;
+	while (!ListEmpty(L2))
+	{
+		if (q == NULL)
+		{
+			p->next = s;
+			return;
+		}
+		else if ((q->data) >= (s->data) && (p->data) <= (s->data))
+		{
+			LNode<DT>* t;
+			t = s->next;
+			s->next = q;
+			p->next = s;
+			s = t;
+			if (s == NULL) return;
+			p = p->next;
+		}
+		else
+		{
+			p = p->next;
+			q = q->next;
+		}
+	}
+}
+int main()
+{
+	// Task 1: Create an ordered list
+	LNode<int>* L;
+	InitList(L);
+	int length;
+	cout << "请输入有序表的长度: ";
+	cin >> length;
+	CreateOrderedList(L, length);
+	DispList(L);
+	// Task 2: Insert a new element and keep the list ordered
+	int n;
+	cout << "请输入插入有序表的元素: ";
+	cin >> n;
+	InsertElementToOrderedList(L, n, length);
+	DispList(L);
+	// Task 3: Merge two ordered linked list
+	LNode<int>* L2;
+	InitList(L2);
+	int length2;
+	cout << "请输入另一个有序表的长度: ";
+	cin >> length2;
+	CreateOrderedList(L2, length2);
+	DispList(L2);
+	MergeTwoOrderedLists(L, L2);
+	DispList(L);
+	return 0;
+}
--- a/Experiment/ExpReportTemplate.dotx
+++ b/Experiment/ExpReportTemplate.dotx
--- a/Experiment/Experiment1/Report.docx
+++ b/Experiment/Experiment1/Report.docx
--- a/Experiment/Experiment1/Task1/Intersection_Union.sln
+++ b/Experiment/Experiment1/Task1/Intersection_Union.sln
@@ -0,0 +1,41 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34701.34
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Sequential_List", "Sequential_List\Sequential_List.vcxproj", "{B4E4A6F7-1B97-421C-98BB-79482B2743FE}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Linked_List", "Linked_List\Linked_List.vcxproj", "{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x64.ActiveCfg = Debug|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x64.Build.0 = Debug|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x86.ActiveCfg = Debug|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Debug|x86.Build.0 = Debug|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x64.ActiveCfg = Release|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x64.Build.0 = Release|x64
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x86.ActiveCfg = Release|Win32
+		{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x86.Build.0 = Release|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x64.ActiveCfg = Debug|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x64.Build.0 = Debug|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x86.ActiveCfg = Debug|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x86.Build.0 = Debug|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x64.ActiveCfg = Release|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x64.Build.0 = Release|x64
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x86.ActiveCfg = Release|Win32
+		{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {413D1D02-E71E-45AC-8680-BA6E93C42BA8}
+	EndGlobalSection
+EndGlobal
--- a/Experiment/Experiment1/Task1/Linked_List/LinkList.h
+++ b/Experiment/Experiment1/Task1/Linked_List/LinkList.h
@@ -0,0 +1,253 @@
+
+template <class DT>
+struct LNode										//链表结点
+{
+	DT data;										//数据域，存储数据元素值
+	LNode* next;									//指针域，指向下一个结点
+};
+
+//算法2.1
+template <class DT>
+bool PriorElem_e(LNode<DT>* L, DT e, DT& pre_e)		// 求值为e的元素前驱
+{
+	int k;
+	k = LocateElem_e(L, e);							// 1.获取e的位序k
+	if (k > 1)											// 2.位序k大于1
+	{
+		GetElem_i(L, k - 1, pre_e);						// 第k-1个元素为e的前驱
+		return true;
+	}
+	else											// 3.元素e无前驱
+		return false;								// 返回false
+}
+
+//【算法2.14】										创建空单链表
+template <class DT>
+bool InitList(LNode<DT>*& L)
+{
+	L = new LNode<DT>;								// 1.创建头结点
+	if (!L) exit(1);									// 2.创建失败，退出
+	L->next = NULL;									// 3.创建成功
+	return true;									// 返回true
+}
+
+//【算法2.15】										尾插法创建n的元素
+template <class DT>
+bool CreateList_1(LNode<DT>*& L, int n)
+{
+	int i;
+	LNode<DT>* p, * s;
+	p = L;											//1.工作指针初始化，指向尾结点
+	cout << "依次输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 2.按元素位序正序创建各结点
+	{
+		s = new LNode<DT>;							// 2.1 新建一个结点s
+		if (!s)										// 2.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 2.3 输入结点值
+		s->next = p->next;							// 2.4 s 链在表尾
+		p->next = s;
+		p = s;										// 2.5 工作指针指向 s
+	}
+	return true;									// 3.创建成功，返回true
+}
+
+//【算法2.16】										头插法创建n个元素
+template <class DT>
+bool CreateList_2(LNode<DT>* (&L), int n)
+{
+	int i;
+	LNode<DT>* s;
+	cout << "逆序输入" << n << "个数据元素：" << endl;
+	for (i = 1; i <= n; i++)							// 1.按元素位序逆序创建各结点
+	{
+		s = new LNode<DT>;							// 1.1 新建一个结点 s
+		if (!s)										// 1.2 创建失败，返回false
+			return false;
+		cin >> s->data;								// 1.3 输入结点值
+		s->next = L->next;							// 1.4 s 在头结点后
+		L->next = s;
+	}
+	return true;									// 1.创建成功，返回true
+}
+
+//【算法2.17】
+template <class DT>
+void DestroyList(LNode<DT>* (&L))					// 释放链表所占空间
+{
+	LNode<DT>* p;
+	while (L)										// 1. 表非空,从头结点开始，依次释放结点
+	{
+		p = L;										// 1.1 处理表头结点
+		L = L->next;									// 1.2 头指针后移
+		delete p;									// 1.3 释放表头结点所占内存
+	}
+	L = NULL;											// 2.头指针指向空
+}
+
+//【算法2.18】										获取第i个元素
+template<class DT>
+bool GetElem_i(LNode<DT>* L, int i, DT& e)
+{
+	LNode<DT>* p;									// 1.初始化
+	p = L->next;										// 1.1 设置工作指针，从首结点开始数结点
+	int j = 1;										// 1.2 计数器初始化
+	while (p && j < i)									// 2.定位到第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)									// 3 未找到，返回false
+		return false;
+	else											// 4. 找到
+	{
+		e = p->data;									// 获取第i个元素值
+		return true;								// 返回true
+	}
+}
+
+//【算法2.19】										查找值为e的元素位序
+template<class DT>
+int LocateElem_e(LNode<DT>* L, DT e)
+{
+
+	LNode<DT>* p;									// 1.初始化从首元开始查找
+	p = L->next;										// 1.1从首元开始查找
+	int j = 1;										// 1.2 计数器初值
+	while (p && p->data != e)							// 2.顺序查找
+	{
+		p = p->next;									// 2.1未找到指针后移
+		j++;										// 2.2 计数器增1
+	}
+	if (p == NULL)										// 3. 判断是否找到
+		return 0;									// 3.1末找到，返回0
+	else
+		return j;									// 3.2 找到，返回位序
+}
+
+//【算法2.20】										插入第i个元素
+template<class DT>
+bool InsertElem_i(LNode<DT>*& L, int i, DT e)
+{
+
+	int j = 0;
+	LNode<DT>* p;									// 1.初始化
+	p = L;											// 工作指针初始化
+	while (p && j < i - 1)								// 2. 定位到插入点前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p || j > i - 1)									// 3.判断定位是否成功：    
+		return false;								// 3.1 定位失败，不能插入
+	else											// 3.2 定位成功
+	{
+		LNode<DT>* s;
+		s = new LNode<DT>;							// 3.2.1建立新结点
+		s->data = e;									// 3.2.2新结点赋值
+		s->next = p->next;							// 3.2.3结点S链接到p结点之后
+		p->next = s;
+		return true;								// 3.2.4 插入成功，返回true
+	}
+
+}
+
+//【算法2.21】										删除第i个元素
+template<class DT>
+bool DeleElem_i(LNode<DT>* (&L), int i)
+{
+
+	LNode<DT>* p, * q;								//1.初始化：设置工作指针
+	p = L;											//查找从头结点开始
+	int j = 0;										//计数器初始化
+	while (p->next && j < i - 1)							//2.p定位到删除点的前驱
+	{
+		p = p->next;
+		j++;
+	}
+	if (!p->next || j > i - 1)								//3.删除位置不合理，不能删除
+		return false;								//返回false
+	else											//4.删除操作
+	{
+		q = p->next;									//4.1暂存删除结点位置
+		p->next = q->next;							//4.2从链表中摘除删除结点
+		delete q;
+		return true;								//4.3删除成功，返回true
+	}
+}
+
+
+//【算法2.22】										修改第i个元素值
+template<class DT>
+bool PutElem_i(LNode<DT>* (&L), int i, DT e)
+{
+	LNode<DT>* p;									// 1.初始化:设置工作指针
+	p = L->next;										// 从首结点开始，数结点
+	int j = 1;										// 计数器初始化
+	while (p && j < i)									// 2.查找第i个元素结点
+	{
+		p = p->next; j++;
+	}
+	if (!p || j > i)										// 3.元素不存在,返回false
+		return false;
+	else											// 4.定位成功
+	{
+		p->data = e;									// 修改元素值
+		return true;								// 返回true
+	}
+}
+
+// 释放链表所占空间
+template<class DT>
+void ClearList(LNode<DT>* (&L))
+{
+
+	LNode<DT>* p;
+	while (L->next)									// 从首元结点开始，依次释放结点
+	{
+		p = L->next;
+		L->next = p->next;
+		delete p;
+	}
+	cout << endl << "表已清空!" << endl;
+}
+
+
+//【算法2.23】										测表长
+template<class DT>
+int ListLength(LNode<DT>* L)
+{													// 1.初始化
+	int len = 0;										// 1.1 结点计数器赋初值0
+	LNode<DT>* p;									// 1.2设置工作指针
+	p = L;											// 指向头结点
+	while (p->next)									// 2.数结点个数。有后继结点，  
+	{
+		len++; p = p->next;							// 结点数增1，指针后移
+	}
+	return len;										// 3.返回表长
+}
+
+//
+template<class DT>
+bool ListEmpty(LNode<DT>* L)						//测表空
+{
+	if (L->next == NULL)
+		return true;								//空表，返回1
+	else
+		return false;								//不空，返回0
+}
+
+
+//【算法2.24】										遍历表
+template <class DT>
+void DispList(LNode<DT>* L)							// 显示表内容
+{
+	LNode<DT>* p;									// 1. 设置工作指针
+	p = L;										// 从首元结点开始遍历
+	while (p->next)										// 2.依次输出各结点值
+	{
+		p = p->next; cout << p->data << "\t";
+
+
+	}
+	cout << endl;
+}
--- a/Experiment/Experiment1/Task1/Linked_List/Linked_List.vcxproj
+++ b/Experiment/Experiment1/Task1/Linked_List/Linked_List.vcxproj
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{b2eef80b-772e-44e2-856d-c8def3242ee3}</ProjectGuid>
+    <RootNamespace>LinkedList</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
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+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="LinkList.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Launchcore	e01c041259	idk why these stuffs get stashed for so long and I didn't ever commit them	2025-11-06 09:43:54 +08:00
綾瀬桃桃	5dbdfef1a1	2024-3-22 Delete one unused line	2024-03-22 00:00:08 +00:00
Launchcore	6b458a6a3e	2024-3-21	2024-03-21 22:13:41 +08:00
Launchcore	59e0405033	2024-3-18	2024-03-18 20:18:12 +08:00
Launchcore	8933bff3c7	2024-3-15 Small changes	2024-03-15 08:34:30 +08:00
Launchcore	0dd8916b05	2024-3-14	2024-03-14 20:36:54 +08:00
Launchcore	3c1d1432d5	2024-3-13 Change encoding	2024-03-13 11:32:13 +08:00
Launchcore	b671321535	2024-3-8 Add Union & Fix	2024-03-08 08:41:13 +08:00
Launchcore	68d6c32692	2024-3-7	2024-03-07 22:59:04 +08:00
綾瀬桃桃	79c0a970f0	2024-3-6 SqList: Change element id from 0 to 1 in some codes	2024-03-06 03:34:21 +00:00