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

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綾瀬桃桃
2025-11-06 09:43:54 +08:00
parent 5dbdfef1a1
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31
Exercise/BiTreeExterned/BiTreeExterned.sln Normal file
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Exercise/BiTreeExterned/bitree.cpp Normal file
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#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;
}

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Exercise/BiTreeExterned/bitree.h Normal file
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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;
}

41
Exercise/Del_e_in_Linear_List/Del_e_in_Linear_List.sln Normal file
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253
Exercise/Del_e_in_Linear_List/Linked_List/LinkList.h Normal file
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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;
}

138
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Exercise/Del_e_in_Linear_List/Linked_List/main.cpp Normal file
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#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;
}

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Exercise/Del_e_in_Linear_List/Sequential_List/Sequential_List.vcxproj Normal file
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175
Exercise/Del_e_in_Linear_List/Sequential_List/SqList.h Normal file
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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;
}

34
Exercise/Del_e_in_Linear_List/Sequential_List/main.cpp Normal file
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#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;
}

41
Exercise/Intersection_Union/Intersection_Union.sln Normal file
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{B4E4A6F7-1B97-421C-98BB-79482B2743FE}.Release|x64.Build.0 = Release|x64
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{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
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{B2EEF80B-772E-44E2-856D-C8DEF3242EE3}.Debug|x86.Build.0 = Debug|Win32
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{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
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253
Exercise/Intersection_Union/Linked_List/LinkList.h Normal file
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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;
}

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#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;
}

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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;
}

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Exercise/Intersection_Union/Sequential_List/main.cpp Normal file
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#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;
}

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Exercise/LinkListOperation/LinkList.h Normal file
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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;
}

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#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;
}