K번째수

import java.util.ArrayList;
import java.util.Collections;
 
class Solution {
    public int[] solution(int[] array, int[][] commands) {
        int[] answer = {};
        
        ArrayList<Integer> tmpList = new ArrayList<>();
        ArrayList<Integer> ansList = new ArrayList<>();
 
        for (int i = 0; i < commands.length; i++) {
            for (int j = commands[i][0] - 1; j < commands[i][1]; j++)
                tmpList.add(array[j]);
 
            Collections.sort(tmpList);
            ansList.add(tmpList.get(commands[i][2] - 1));
 
            tmpList.clear();
        }
        answer = new int[ansList.size()];
 
        for (int i = 0; i < answer.length; i++)
            answer[i] = ansList.get(i);
        
        return answer;
    }
}