【数据结构】2-2 队列问题

就是简单的队列的实现，出队、入队等操作

#include<iostream>
using namespace std;
template<class T>
struct Node {
    T data;
    Node *next;
};
template<class T>
class LinkQueue {
private:
    Node<T> *front, *rear;
public:
    LinkQueue();
    ~LinkQueue();
    void EnQueue(T x);        //将元素x入队
    T DeQueue();            //将队头元素出队
    T GetQueue();            //取队头元素
    bool Empty();            //判断链队列是否为空
    void print();            //打印队列
};
template<class T>
LinkQueue<T>::LinkQueue()
{
    Node<T> *s = new Node<T>();
    s->next = NULL;
    front = rear = s;
}
template<class T>
void LinkQueue<T>::EnQueue(T x)
{
    Node<T> *s = new Node<T>();
    s->data = x;
    s->next = NULL;
    rear->next = s;
    rear = s;
}
template<class T>
T LinkQueue<T>::DeQueue()
{
    T tem;                //存储数据        
    Node<T> *del;            //用来存放要删除的指针的地址
    if (front == NULL)
    {
        cout << "ERROR" << endl;
        exit(1);
    }
    tem = front->next->data;
    del = front->next;
    front->next = front->next->next;
    if (front->next == NULL)
    {
        rear = front;
    }
    delete del;
    return tem;
}
template<class T>
T LinkQueue<T>::GetQueue()
{
    if (front == NULL)
    {
        cout << "ERROR" << endl;
        exit(1);
    }
    T tem;
    tem = front->next->data;
    return tem;

}
template<class T>
bool LinkQueue<T>::Empty()
{
    if (front == NULL)
        return true;
    else
        return false;
}
template<class T>
LinkQueue<T>::~LinkQueue()
{
    Node<T> *p = front;
    while (p)
    {
        Node<T> *q = p;
        p = p->next;
        delete q;
    }
    front = rear = NULL;
}
template<class T>
void LinkQueue<T>::print()
{
    Node<T> *p = front->next;
    while (p)
    {
        cout << p->data << " ";
        p = p->next;
    }
    cout << endl;

}

测试代码：

#include"queue.cpp"
int main()
{
    LinkQueue<int> test;
    int number;
    cout << "请输入队中元素个数并分别赋值:" << endl;
    cin >> number;
    for (int i = 0; i < number; i++)
    {
        int x;
        cin >> x;
        test.EnQueue(x);
    }
    cout << "取队头元素:" << test.GetQueue() << endl;
    cout << "打印队列:";
    test.print();
    cout << "队头:" << test.DeQueue() << "出队" << endl;
    test.print();
    system("pause");
    return 0;
}