C++ 对vector进行排序

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

int main(void)
{
    vector <int> a;
    a.push_back(6);
    a.push_back(2);
    a.push_back(3);
    a.push_back(8);
    a.push_back(9);
    sort(a.begin(),a.end());
    for(int i=0;i<a.size();i++)
        cout<<a[i]<<" "<<endl;
        
    return 0;
}

>>> 2 3 8 6 9