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綾瀬桃桃
2024-03-13 11:32:13 +08:00
parent b671321535
commit 3c1d1432d5
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Chapter2/2-2-LinkList/LinkList.cpp
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@@ -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);