go语言题解LeetCode506相对名次示例详解

输入：score = [5,4,3,2,1]
输出：["Gold Medal","Silver Medal","Bronze Medal","4","5"]
解释：名次为 [1st, 2nd, 3rd, 4th, 5th] 。

输入：score = [10,3,8,9,4]
输出：["Gold Medal","5","Bronze Medal","Silver Medal","4"]
解释：名次为 [1st, 5th, 3rd, 2nd, 4th] 。

class Solution {
    public String[] findRelativeRanks(int[] nums) {
        if(nums.length==1) {
            return new String[]{"Gold Medal"};
        }
        String[] arr = new String[nums.length];
        Map<Integer,Integer> map = new HashMap<Integer,Integer>();
        int count = 0;
        for(int i = 0,j=0;i<nums.length && j<nums.length;i++,j++) {
            map.put(nums[i],j);
        }
        Arrays.sort(nums);
        for(int i = 0;i<nums.length/2;i++) {
            int temp = nums[nums.length-i-1];
            nums[nums.length-i-1] = nums[i];
            nums[i] = temp;
        }
        if(nums.length==2) {
            arr[map.get(nums[0])] = "Gold Medal";
            arr[map.get(nums[1])] = "Silver Medal";
            return arr;
        }
        arr[map.get(nums[0])] = "Gold Medal";
        arr[map.get(nums[1])] = "Silver Medal";
        arr[map.get(nums[2])] = "Bronze Medal";
        for(int i = 3;i<nums.length;i++) {
            arr[map.get(nums[i])] = i+1+"";
        }
        return arr;
    }
}