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.

Difficulty:Easy

Category:Binary-Search

Analyze

在这道题目中,给出了你一些人的分数,输入他们的排名, 前面三名使用Gold, Medal, Silver Medal, Bronze Medal替代,后面的输出排名的数字号码就好了.

Solution

class Solution {
 public:
  vector<string> findRelativeRanks(vector<int>& nums) {
    vector<string> ans;
    vector<int> s(nums);
    sort(s.begin(), s.end());
    vector<string> medals{"Gold", "Silver", "Bronze"};
    for (int i = 0; i < nums.size(); ++i) {
      int rank = s.end() - std::lower_bound(s.begin(), s.end(), nums[i]);
      if (rank <= 3) {
        ans.push_back(medals[rank - 1] + " Medal");
      } else
        ans.push_back(std::to_string(rank));
    }
    return ans;
  }
};