506. Relative Ranks

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public class Solution {    class Rank {        int pos;        int score;        Rank(int pos, int score) {            this.pos = pos;            this.score = score;        }    }    public String[] findRelativeRanks(int[] nums) {        List<Rank> r = new ArrayList<>();        for(int i = 0; i < nums.length;i++) {            r.add(new Rank(i,nums[i]));        }        Collections.sort(r, new Comparator<Rank>(){            public int compare(Rank r1,Rank r2) {                return r2.score-r1.score;            }        });        String[] rank = new String[nums.length];        for(int i = 0; i < nums.length;i++) {            if(i==0) {                rank[r.get(i).pos] = "Gold Medal";            }else if(i==1) {                rank[r.get(i).pos] = "Silver Medal";            }else if(i==2) {                rank[r.get(i).pos] = "Bronze Medal";            }else{                rank[r.get(i).pos] = String.valueOf(i+1);            }        }        return rank;    }}

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