www.pudn.com > vector_list_deque.rar > CHAPTER6-24.cpp

//文件名:CHAPTER6-24.cpp 
#include  
#include  
#include  
using namespace std; 
void pause()  //程序暂停 
{   char c; 
    cout << "\n\nPress return to continue: "; 
    cin.get(c); 
    cout << "\n\n"; 
} 
int main()  
{ 
    vector v(10,0);   //定义一个vector变量，大小为10，值都为0 
    ostream_iterator out(cout, " ");  //定义一个输出迭代器 
    copy(v.begin(), v.end(), out);// 通过算法函数copy输出v中全部的数据 
    pause(); //程序输出为：0 0 0 0 0 0 0 0 0 0  
    vector::iterator i = v.begin(); //定义头迭代器 
    i += 4;  //指向第5个元素 
    *i++ = 7;  // or v[4] = 7; //使第5个元素值为7，同时迭代器指向下一个元素 
    *i = 9;    // or v[5] = 9; //赋值第6个元素大小为9 
    copy(v.begin(), v.end(), out); // 把通过迭代器赋值后的所有元素打印出来 
    pause();//程序输出为： 0 0 0 0 7 9 0 0 0 0 
    vector::iterator where = find(v.begin(), v.end(), 9);//在v中查找值为9的元素，并返回相应的迭代器 
    copy(where, v.end(), out);// 把查找到的元素及其该元素后的数据全部显示出来。 
    pause();//程序输出为：9 0 0 0 0 
    where = v.insert(where, 8); //在迭代器指示的元素前插入一个元素，其值为8 
    copy(v.begin(), v.end(), out); //检验insert函数的效果 
    pause();//程序输出为：0 0 0 0 7 8 9 0 0 0 0  
    where += 3;  //迭代器指示当前元素后的第三个元素为当前元素 
    where = v.insert(where, 4); //在当前元素前插入一个元素，值为4 
    copy(v.begin(), v.end(), out); 
    pause();//程序输出为：0 0 0 0 7 8 9 0 4 0 0 0 
    where -= 6;//迭代器前移6个元素 
    where = v.insert(where, 11); //插入元素11到vector中 
    copy(v.begin(), v.end(), out); 
    pause();//程序输出为：0 0 11 0 0 7 8 9 0 4 0 0 0  
    v.erase(where+2);  // 删除迭代器后的第2个元素 
    copy(v.begin(), v.end(), out); 
    pause();//程序输出为：0 0 11 0 7 8 9 0 4 0 0 0 
    sort(v.begin(), v.end()); //对vector进行由大到小排序 
    copy(v.begin(), v.end(), out); 
    pause();//程序输出为：0 0 0 0 0 0 0 4 7 8 9 11  
    if (binary_search(v.begin(), v.end(), 8)) // vector的查找 
         cout << "Yes, 8 occurs in vector v."; 
    else 
         cout << "No, didn't find 8 in vector v."; 
    pause();//程序输出为：Yes, 8 occurs in vector v. 
    if (binary_search(v.begin(), v.end(), 12)) //  vector的查找 
         cout << "Yes, 12 occurs in vector v."; 
    else 
         cout << "No, didn't find 12 in vector v."; 
    pause();//程序输出为：No, didn't find 12 in vector v. 
    where = lower_bound(v.begin(), v.end(), 8); //查找第一次出现8的位置 
    copy(where, v.end(), out); 
    pause();//程序输出为：8 9 11 
    where = lower_bound(v.begin(), v.end(), 0); //查找第一次出现0的位置 
    copy(where, v.end(), out); 
    pause();//程序输出为：0 0 0 0 0 0 0 4 7 8 9 11 
    where = upper_bound(v.begin(), v.end(), 0); //查找第一次不出现0时的位置 
    copy(where, v.end(), out); 
    pause();//程序输出为：4 7 8 9 11 
    vector w(v); 
    if (v == w) //两个vector直接比较 
       cout << "v and w have the same contents"; 
    else 
       cout << "v and w have different contents"; 
    pause();//程序输出为：v and w have the same contents 
    w[5] = 17; 
    if (v == w) 
       cout << "v and w have the same contents"; 
    else 
       cout << "v and w have different contents"; 
    pause();//程序输出为：v and w have different contents 
    v[5] = 17; 
    if (v == w) 
       cout << "v and w have the same contents"; 
    else 
       cout << "v and w have different contents"; 
    pause();//程序输出为：v and w have the same contents 
    return 0; 
}