506. Relative Ranks

#### QUESTION:

Given scores of N athletes, find their relative ranks and the people with the top three highest scores, who will be awarded medals: “Gold Medal”, “Silver Medal” and “Bronze Medal”.

Example 1:

Input: [5, 4, 3, 2, 1]

Output: [“Gold Medal”, “Silver Medal”, “Bronze Medal”, “4”, “5”]

Explanation: The first three athletes got the top three highest scores, so they got “Gold Medal”, “Silver Medal” and “Bronze Medal”.

For the left two athletes, you just need to output their relative ranks according to their scores.

Note:

1. N is a positive integer and won’t exceed 10,000.
2. All the scores of athletes are guaranteed to be unique.

#### EXPLANATION:

1.首先进行冒泡排序，每次排序都会出一个最大值，这样就可以将所有的数字与他对应的排名对应起来了。

2.然后按照顺序去除对应的排名就可以了。

#### SOLUTION:

``````public String[] findRelativeRanks(int[] nums) {
int[] orginal = Arrays.copyOf(nums,nums.length);
Hashtable<Integer,String> result = new Hashtable<>();
for(int i = 0;i<nums.length-1;i++){
for (int j = 0; j < nums.length - 1 - i; j++) {
if (nums[j] > nums[j + 1]) {
switchIndex(nums, j, j + 1);
}
}
result.put(nums[nums.length-1-i],i+1+"");
}
result.put(nums,nums.length+"");
String[] str_result = new String[nums.length];
for(int i = 0;i<orginal.length;i++){
str_result[i] = result.get(orginal[i]);
if(str_result[i].equals("1")){
str_result[i] = "Gold Medal";
}else if(str_result[i].equals("2")){
str_result[i] = "Silver Medal";
}else if(str_result[i].equals("3")){
str_result[i] = "Bronze Medal";
}
}
return str_result;
}
``````
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