506. Relative Ranks

public class Solution {
    public String[] findRelativeRanks(int[] nums) {
        // PriorityQueue could but not great enough, use array
        Integer[] index = new Integer[nums.length];
        
        for (int i = 0; i < nums.length; i++) {
            index[i] = i;
        }
        // jdk 8 syntax
        // List<CustomObject> list = getCustomObjectList();
        // Collections.sort(list, (left, right) -> left.getId() - right.getId());
        // System.out.println(list);
        Arrays.sort(index, (a, b) -> (nums[b] - nums[a]));
        
        String[] result = new String[nums.length];

        for (int i = 0; i < nums.length; i++) {
            if (i == 0) {
                result[index[i]] = "Gold Medal";
            }
            else if (i == 1) {
                result[index[i]] = "Silver Medal";
            }
            else if (i == 2) {
                result[index[i]] = "Bronze Medal";
            }
            else {
                result[index[i]] = (i + 1) + "";
            }
        }

        return result;
    }
}