C++ Vector转Set与Set转Vector

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


int main()
{
    vector<int> vec;
    vec = { 1, 2, 3, 4, 8, 9, 3, 2, 1, 0, 4, 8 };
    set<int> st(vec.begin(), vec.end());
    vec.assign(st.begin(), st.end());

    vector<int>::iterator it;
    for (it = vec.begin(); it != vec.end(); it++)
        cout << *it<<endl;
    
    return 0;
}

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