링크 : https://school.programmers.co.kr/learn/courses/30/lessons/42748
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
vector<int> solution(vector<int> array, vector<vector<int>> commands) {
vector<int> answer;
for(int i = 0; i < commands.size(); i ++){
vector<int> temp;
for(int j = commands[i][0] - 1; j < commands[i][1]; j++){
temp.push_back(array[j]);
}
sort(temp.begin(), temp.end());
answer.push_back(temp.at(commands[i][2] - 1));
}
return answer;
}