好久不用STL了，忘的差不多了，总结一下vector的使用方式，就不对每个方法做出详细解释了，只给出了如何用

void testVector()
{
	int a[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
	//构造一个元素值全为2大小为10的vector
	vector
  
    v1(10,2);
	//用指针构造
	vector
   
     v2(a, a + 10); //用vector iterator构造 vector
    
      v3(v2.begin(), v2.end()); //构造一个和v1一样的vector vector
     
       v4(v1); //使用[]操作符进行遍历 cout << "=================v1===============" << endl; for (int i = 0; i < v1.size(); i++) { cout << v1[i] << " "; } cout << endl; vector
      
       ::iterator it; //得到第2个元素的iterator it = v2.begin() + 1; //移除第2个元素，返回移除元素后一个元素的iterator vector
       
        ::iterator erase_it = v2.erase(it); cout << *erase_it << endl; //移除之后就不能通过iterator访问了 //cout << *it << endl; //通过iterator 遍历 cout << "=================v2===============" << endl; for (it = v2.begin(); it != v2.end(); it++) { cout << *it << " "; } cout << endl; //逆序遍历 cout << "=================v3 reserver======" << endl; vector
        
         ::reverse_iterator rit; for ( rit = v3.rbegin(); rit != v3.rend() ; rit++) { cout << *rit << " "; } cout << endl; cout << "=================v4 swap v3========" << endl; //交换v4和v3的内容 v4.swap(v3); for (int i = 0; i < v4.size(); i++) { cout << v4[i] << " "; } cout << endl; cout << "============v4 push pop insert======" << endl; //在v4末尾插入100 v4.push_back(100); //将末尾的100移除 v4.pop_back(); //在第二个元素位置插入1000 v4.insert(v4.begin() + 1, 1000); //在第二个元素位置插入2个200 v4.insert(v4.begin() + 1, 2, 200); //在第二个元素位置插入2个v1的开始到结束 v4.insert(v4.begin() + 1, v1.begin(), v1.end()); for (int i = 0; i < v4.size(); i++) { cout << v4[i] << " "; } cout << endl; cout << "============v4 clear empty size======" << endl; //清除v4中所有内容 v4.clear(); //检查v4是否为空 if (v4.empty()) { cout << "v4 is empty" << endl; cout << "v4 size = "<
         
          
 
          

 
 
          
以下是测试结果