C++ vector遍历删除

Posted 2023-05-16

参考技术A int _tmain(int argc, _TCHAR* argv[])



    vector<int> a ;//= 12, 23, 34, 45, 56, 67, 78, 89;

a.push_back(10);

a.push_back(40);

a.push_back(10);

a.push_back(10);

a.push_back(10);

    for (auto iter = a.begin(); iter != a.end(); )

        if (*iter > 30)

            iter = a.erase(iter);

       

        else

            ++iter;

   

感谢 C海摸鱼 的指正

N种姿势满足你遍历C++ vectorC++ vector 遍历

C++ vector遍历demo，多种姿势任你选~

1.迭代器

    for(vector<int>::iterator it = obj.begin(); it != obj.end(); it++)
    {
        cout << *it << ",";
    }

2.C++11 新增关键字auto

    for(auto it = obj.begin(); it != obj.end(); it++)
    {
        cout << *it << ",";
    }

3.数组遍历法

    for(int i=0;i<obj.size();i++)
    {
        cout<<obj[i]<<",";
    }

4.基于范围的for循环

    for (auto iter : obj) 
    {
        cout << iter << ",";
    }

demo示例

#include <vector>
#include <iostream>
using namespace std;
 
int main()
{
    vector<int>obj;
    
    for(int i=0;i<10;i++)
    {
        obj.push_back(i);
        cout<<obj[i]<<",";    
    }
    cout << endl << "vector size is :" << obj.size() << endl;
    
    //iterator遍历
    for(vector<int>::iterator it = obj.begin(); it != obj.end(); it++)
    {
        cout << *it << ",";
    }
    cout << endl;
    
    //数组循环遍历
    for(int i=0;i<obj.size();i++)
    {
        cout<<obj[i]<<",";
    }
    cout << endl;
    
     //auto关键字遍历遍历
    for(auto it = obj.begin(); it != obj.end(); it++)
    {
        cout << *it << ",";
    }
    cout << endl;
	
	//基于范围的for循环
    for (auto iter : obj) 
    {
        cout << iter << ",";
    }
    cout << endl;
 
    return 0;
}

结果展示：

结束寄语

有关vector小细节的介绍就到此结束啦！下篇博文与各位再见面~

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