[Java]프로그래머스 Lv. 0 등수 매기기

https://school.programmers.co.kr/learn/courses/30/lessons/120882

프로그래머스

나의 풀이

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

class Solution {
    public int[] solution(int[][] score) {
        List<Integer> scoreList = new ArrayList<>();
        for(int[] s : score){
            scoreList.add(s[0] + s[1]);
        }
        scoreList.sort(Comparator.reverseOrder());

        int[] answer = new int[score.length];
        for(int i = 0; i < score.length; i++){
            answer[i] = scoreList.indexOf(score[i][0] + score[i][1])+1;
        }
        return answer;
    }
}

다른 풀이

import java.util.Arrays;
import java.util.Comparator;
import java.util.stream.Collectors;

class Solution {
    public int[] solution(int[][] score) {
        return Arrays.stream(score).map(ints -> Arrays.stream(ints).average().orElse(0)).mapToInt(d -> Arrays.stream(score).map(ints -> Arrays.stream(ints).average().orElse(0)).sorted(Comparator.reverseOrder()).collect(Collectors.toList()).indexOf(d) + 1).toArray();
    }
}