[Programmers] 최댓값과 최솟값

string solution(string s) {
    string answer = "";
    istringstream iss(s);
    vector<int> v;
    
    /*
     // [1] : Type : string
    for(string _s; iss >> _s; ){
        v.push_back(stoi(_s));
    }
     */
    
    // [2] : Type : int
    for(int _s; iss >> _s; ){
        v.push_back(_s);
    }
    
    sort(v.begin(), v.end());
    answer = to_string(v[0]) + " " + to_string(v[v.size()-1]);
    return answer;
}