編程第六十七、六十八天

c++ list頭文件（2）

#include <iostream>
#include <list>

using namespace std;
typedef list<int> INTLIST;

//從前向後顯示list隊列的全部元素
void put_list(INTLIST list, char *name)
{
    INTLIST::iterator plist;

    cout << "The contents of " << name << " : ";
    for(plist = list.begin(); plist != list.end(); plist++)
        cout << *plist << " ";
    cout<<endl;
}

//測試list容器的功能
void main(void)
{
//list1對象初始爲空
    INTLIST list1;   
    //list2對象最初有10個值爲6的元素 
    INTLIST list2(10,6); 
    //list3對象最初有3個值爲6的元素 
    INTLIST list3(list2.begin(),--list2.end());

    //聲明一個名爲i的雙向迭代器
    INTLIST::iterator i;

    //從前向後顯示各list對象的元素
    put_list(list1,"list1");
    put_list(list2,"list2");
    put_list(list3,"list3");
    
//從list1序列後面添加兩個元素
list1.push_back(2);
list1.push_back(4);
cout<<"list1.push_back(2) and list1.push_back(4):"<<endl;
    put_list(list1,"list1");

//從list1序列前面添加兩個元素
list1.push_front(5);
list1.push_front(7);
cout<<"list1.push_front(5) and list1.push_front(7):"<<endl;
    put_list(list1,"list1");

//在list1序列中間插入數據
list1.insert(++list1.begin(),3,9);
cout<<"list1.insert(list1.begin()+1,3,9):"<<endl;
    put_list(list1,"list1");

//測試引用類函數
cout<<"list1.front()="<<list1.front()<<endl;
cout<<"list1.back()="<<list1.back()<<endl;

//從list1序列的前後各移去一個元素
list1.pop_front();
list1.pop_back();
cout<<"list1.pop_front() and list1.pop_back():"<<endl;
    put_list(list1,"list1");

//清除list1中的第2個元素
list1.erase(++list1.begin());
cout<<"list1.erase(++list1.begin()):"<<endl;
    put_list(list1,"list1");

//對list2賦值並顯示
list2.assign(8,1);
cout<<"list2.assign(8,1):"<<endl;
    put_list(list2,"list2");

//顯示序列的狀態信息
cout<<"list1.max_size(): "<<list1.max_size()<<endl;
cout<<"list1.size(): "<<list1.size()<<endl;
cout<<"list1.empty(): "<<list1.empty()<<endl;

//list序列容器的運算
    put_list(list1,"list1");
    put_list(list3,"list3");
cout<<"list1>list3: "<<(list1>list3)<<endl;
cout<<"list1<list3: "<<(list1<list3)<<endl;

//對list1容器排序
list1.sort();
    put_list(list1,"list1");
    
//結合處理
list1.splice(++list1.begin(), list3);
    put_list(list1,"list1");
    put_list(list3,"list3"); 
}