2021.12.02 - 166.相对名次

• 1. 题目
• 2. 思路
• • (1) HashMap
• 3. 代码

• 首先利用HashMap记录每个分数所在的位置，然后对分数进行排序，最后将名次填到分数原来的位置上即可。

import java.util.*;

public class Test {
    public static void main(String[] args) {
    }
}

class Solution {
    public String[] findRelativeRanks(int[] score) {
        int n = score.length;
        Map map = new HashMap<>();
        for (int i = 0; i < n; i++) {
            map.put(score[i], i);
        }
        Arrays.sort(score);
        String[] res = new String[n];
        for (int i = 0; i < n; i++) {
            int num = n - i;
            int index = map.get(score[i]);
            if (num > 3) {
                res[index] = String.valueOf(num);
            } else if (num == 3) {
                res[index] = "Bronze Medal";
            } else if (num == 2) {
                res[index] = "Silver Medal";
            } else {
                res[index] = "Gold Medal";
            }
        }
        return res;
    }
}