C++代码实现链队列详解
目录
- 主要功能:
- 完整代码展示:
- 总结
主要功能:
初始化
、入队
、出队
、取队头元素
、销毁队列
、输出队列
完整代码展示:
#include <iostream> using namespace std; #define MAXSIZE 100 typedef struct QueNode{ //定义链队列存储结构 int data; QueNode * next; }QNode,*QuePtr; typedef struct { //定义链队列指针 QuePtr front; //队头指针 QuePtr rear; //队尾指针 }LinkQue; bool InitQue(LinkQue &Q){ //初始化 Q.front = Q.rear = new QNode; if (!Q.front) return false; Q.front->next = NULL; return true; } bool DestoryQue(LinkQue &Q){ //销毁表 while (Q.front){ Q.rear = Q.front->next; delete(Q.front); Q.front = Q.rear; } return true; } bool EnQue(LinkQue &Q,int e){ //入队 QuePtr p = new QNode; if(!p) return false; p->data = e; p->next = NULL; Q.rear->next = p; Q.rear = p; return true; } bool OutQue(LinkQue &Q,int e){ //出队 if(Q.front == Q.rear) return false; //队空 QuePtr p = Q.front->next; e = p->data; Q.front->next = p->next; if(Q.rear == p) Q.rear = Q.front; delete p; return true; } bool GetHead(LinkQue Q,int &e){ //取队头元素 if(Q.front == Q.rear) return false; e = Q.front->next->data; return true; } void ShowList(LinkQue Q){ //输出链队 QuePtr p = Q.front->next; while (p){ cout<<p->data<<" "; p = p->next; } cout<<endl; } int main() { LinkQue Q; int e; int choose = -1; cout<<"1.入队-------------------2.出队"<<endl; cout<<"3.取头元素---------------4.销毁"<<endl; cout<<"5.输出链队---------------0.退出"<<endl; InitQue(Q); while (choose != 0) { cout << "请选择功能:"; cin >> choose; switch (choose) { case 1: cout << "请输入入队元素:"; cin >> e; if (EnQue(Q, e)) cout << "入队成功" << endl; break; case 2: if (OutQue(Q, e)) cout << "出队成功" << endl; break; case 3: if (GetHead(Q, e)) cout << "队头元素为" << e << endl; break; case 4: if (DestoryQue(Q)) cout << "销毁成功" << endl; break; case 5: cout << "队列元素为:"; ShowList(Q); break; } } return 0; }
运行结果图:
总结
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