STL - stack（栈）

标签：栈   stl   stack   

//尖括号内还可以设置指针类型或自定义类型。

stack的push()与pop()方法 
stack.push(elem);   //往栈头添加元素
stack.pop();   //从栈头移除第一个元素

stack<int> stkInt;  	
stkInt.push(1);stkInt.push(3);stkInt.pop();   
stkInt.push(5);stkInt.push(7);  
stkInt.push(9);stkInt.pop();   	
stkInt.pop();  
此时stkInt存放的元素是1,5  
stack对象的拷贝构造与赋值
stack(const stack &stk);		     //拷贝构造函数
stack& operator=(const stack &stk);	//重载等号操作符

		stack<int> stkIntA;
		stkIntA.push(1);
		stkIntA.push(3);
		stkIntA.push(5);
		stkIntA.push(7);
		stkIntA.push(9);

		stack<int> stkIntB(stkIntA);		//拷贝构造
		stack<int> stkIntC;
		stkIntC = stkIntA;				//赋值
stack的数据存取
?	<span style="white-space:pre">	</span>stack.top();	  //返回最后一个压入栈元素
		stack<int> stkIntA;
		stkIntA.push(1);
		stkIntA.push(3);
		stkIntA.push(5);
		stkIntA.push(7);
		stkIntA.push(9);

		int iTop = stkIntA.top();		//9
		stkIntA.top() = 19;			//19
stack的大小
?	stack.empty();   //判断堆栈是否为空
?	stack.size(); 	     //返回堆栈的大小

		stack<int> stkIntA;
		stkIntA.push(1);
		stkIntA.push(3);
		stkIntA.push(5);
		stkIntA.push(7);
		stkIntA.push(9);

		if (!stkIntA.empty())
		{
			int iSize = stkIntA.size();		//5
		}

#include <iostream>
#include <cstdio>
#include <stack>
#include <algorithm>
using namespace std;

void stackInit()
{
	stack<int> s;
	
	// 入栈
	for (int i = 0; i < 10; ++i) {
		s.push(i + 1);
	}
	cout << "size of s: " << s.size() << endl;

	while (!s.empty()) {
		cout << s.top() << ' '; // 获取栈顶元素
		s.pop(); // 弹出栈顶元素
	}
	cout << endl;
}

class Teacher
{
public:
	int age;
	char name[32];
public:
	void printTeacher()
	{
		cout << "age: " << age << endl;
	}
};

void stackClass()
{
	Teacher t1, t2, t3;
	t1.age = 21;
	t2.age = 22;
	t3.age = 23;

	stack<Teacher> s;
	s.push(t1);
	s.push(t2);
	s.push(t3);

	while (!s.empty()) {
		Teacher tmp = s.top();
		s.pop();
		tmp.printTeacher();
	}
	/*
	age: 23
	age: 22
	age: 21
	*/
	cout << endl;
}

void stackClassP()
{
	Teacher t1, t2, t3;
	t1.age = 21;
	t2.age = 22;
	t3.age = 23;

	stack<Teacher *> s;
	s.push(&t1);
	s.push(&t2);
	s.push(&t3);

	while (!s.empty()) {
		Teacher *tmp = s.top();
		s.pop();
		tmp->printTeacher();
	}
	/*
	age: 23
	age: 22
	age: 21
	*/
}

int main()
{
	stackInit();
	stackClass();
	stackClassP();

	return 0;
}

STL - stack（栈）

标签：栈   stl   stack   

原文地址：http://blog.csdn.net/zyq522376829/article/details/46802545