第五讲 list

STL 中的list容器

//对已string型list进行添加,删除,查找,插入操作
#include "stdafx.h"
#include <iostream>
#include <string>
#include <list>
using namespace std;

int main()
{
    list<string> oList;
    //list不能对相应的对象进行直接操作，只能通过算法或迭代器
    //oList[0] = "www.jiesoon.com";  //不行

    //list没有预留空间
    //oList.capacity();            //没有这个函数

    //给oList对象添加元素
    oList.push_back("3.jiesoon.com");
    oList.push_front("2.jiesoon.com");
    oList.push_back("4.jiesoon.com");
    oList.push_front("1.jiesoon.com");

    list<string>::iterator itList = oList.begin();
    for(; itList != oList.end(); ++itList){
        cout<< *itList << endl;
    }

    cout<< "oList存有的元素：" << oList.size() << endl;

    cout << "**********************************************" << endl;

    //list 是个双向链表    vector deque 也可以用迭代器双向访问
    itList = oList.begin();
    //itList += 2;    //不可以，list 不是一个连续的容器
    ++itList;
    ++itList;
    cout << *itList << endl;

    --itList;
    cout << *itList << endl;

    cout << "**********************************************" << endl;
    //插入数据 (不同于vector，deque 在不同位置插入数据有着一样的效率)
    itList = oList.begin();
    oList.insert(itList,"0.jiesoon.com");
    for(itList = oList.begin(); itList != oList.end(); ++itList){
        cout<< *itList << endl;
    }

    cout << "**********************************************" << endl;
    //删除数据方法①
    oList.remove("2.jiesoon.com");
    for(itList = oList.begin(); itList != oList.end(); ++itList){
        cout<< *itList << endl;
    }

    cout << "**********************************************" << endl;
    //删除数据方法②
    itList = oList.begin();
    oList.erase(itList);
    for(itList = oList.begin(); itList != oList.end(); ++itList){
        cout<< *itList << endl;
    }

    return 0;
}

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