c++ day 6

news2024/12/27 13:14:21

1、将之前定义的栈类和队列类都实现成模板类

#include <iostream>

using namespace std;



#define MAX 128

template<typename T>

class Stack
{
public:
    //构造函数
    Stack();
    //析构函数
    ~Stack();
    //拷贝构造函数
    Stack(const Stack &other);
    //入栈
    int push(T e);
    //出栈
    int pop();
    //清空栈
    void clear();
    //判空
    bool empty();
    //判满
    bool full();
    //获取栈顶元素
    T topdata();
    //求栈的大小
    int size();
private:
    T*data;
    int top;

};

template<typename T>
//构造函数
Stack<T>::Stack():data(new T[MAX]),top(-1){cout<<"构造函数"<<endl;}
template<typename T>
//析构函数
Stack<T>::~Stack()
{
    delete []data;  //释放指针空间
    cout<<"析构函数"<<endl;
}
template <typename T>

//拷贝构造函数
Stack<T>::Stack(const Stack &other):data(new T[MAX]),top(other.top)
{
    std::copy(other.data,other.data+MAX,data);
    cout<<"拷贝函数"<<endl;
}

//入栈
template <typename T>
int Stack<T>::push(T e){
    if(Stack<T>::full()){
        cout<<"栈满，无法入栈；"<<endl;
        return 0;
    }
    data[++top]=e;
    cout<<data[top]<<"已入栈"<<endl;
    return 1;
}
//出栈
template <typename T>
int Stack<T>::pop(){
    if(Stack<T>::empty()){
        cout<<"栈空，无法出栈；"<<endl;
        return 0;
    }
    cout<<data[top--]<<"已出栈"<<endl;
    return 1;
}
//清空栈
template <typename T>
void Stack<T>::clear(){
    cout<<"栈已清空"<<endl;
    while(!Stack::empty()){
        Stack::pop();
    }
}
//判空
template <typename T>
bool Stack<T>::empty(){
    return -1 == top;
}
//判满
template <typename T>
bool Stack<T>::full(){
    return MAX-1 == top;
}
//获取栈顶元素
template <typename T>
T Stack<T>::topdata(){
    cout<<"栈顶元素为：";
    return data[top];
}
//求栈的大小
template <typename T>
int Stack<T>::size(){
    cout<<this<<"栈的大小为：";
    return top+1;
}

int main()
{
    Stack<string> s;
    s.push("haha");
    s.push("wowo");
    s.push("nini");
    s.push("tata");
    s.push("lala");
    s.push("hehe");
    cout<<s.size()<<endl;
    Stack<string> s2=s;
    cout<<s2.size()<<endl;
    Stack<string> s3=s2;
    cout<<s3.size()<<endl;
    s3.pop();
    s3.pop();
    s3.pop();
    cout<<s3.topdata()<<endl;
    s3.clear();
    s3.pop();
    cout<<s3.size()<<endl;
    cout<<s.size()<<endl;
    return 0;
}