使用 vector erase 指定元素

#include "iostream"
#include "vector"

using namespace std;

int   main()
{
    vector<int>   arr;
    arr.push_back(6);
    arr.push_back(8);
    arr.push_back(3);
    arr.push_back(8);

    for(vector<int>::iterator it=arr.begin(); it!=arr.end(); )
    {
        if(* it == 8)
        {
            it = arr.erase(it);
        }
        else
        {
            ++it;
        }
    }

    cout << "After remove 8:/n";

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

}