【STL】- vector的用法

初始化：

1. 默认构造：

vector<int> vint;

2. 用包含10个元素的数组初始化：

vector<int> vint(ia, ia+10);

算法：

1. vint.push_back(i);

2. vint.size();

3. vint[i];

4. vint.erase(pos1, pos2);

代码：

 #include <vector>
 #include <iostream>
 #include <iterator>
 using namespace std;

 int ia[] = {,,,,,,,,,, ,};

 int main() {
     //initialize
     vector<int> vint1;
     vector<int> vint2(ia, ia+);

     //push_back()
     for(int i = ; i <=; ++i)
         vint1.push_back(i);

     //no push_front()
     //vint1.push_front(222);

     //size()
     cout << "The size of vint1 is: " << vint1.size() << endl;

     //[] operator
     for(int i = ; i < vint2.size(); i++)
         cout << vint2[i] << endl;

     vint2.erase(vint2.begin()+, vint2.end());

     copy(vint2.begin(), vint2.end(), ostream_iterator<int>(cout, " "));

     return ;
 }

输出：

$ ./a.exe
The size of vint1 is: