vector<pair<int, int>>或者有序map

功能相同

 1   static bool sortPair(pair<int, int> a, pair<int, int> b) {
 2     return a.second > b.second;
 3   }
 4   vector<string> findRelativeRanks(vector<int> &score) {
 5     vector<string> res(score.size());
 6 
 7     vector<pair<int, int>> pairr;
 8 
 9     for (int i = 0; i < score.size(); i++) {
10       pairr.push_back(pair<int, int>(i, score[i]));
11     }
12 
13     sort(pairr.begin(), pairr.end(), sortPair);
14     for (int i = 0; i < pairr.size(); i++) {
15       switch (i) {
16       case 0:
17         res[pairr[i].first] = "Gold Medal";
18         break;
19       case 1:
20         res[pairr[i].first] = "Silver Medal";
21         break;
22       case 2:
23         res[pairr[i].first] = "Bronze Medal";
24         break;
25       default:
26         res[pairr[i].first] = to_string(i + 1);
27         break;
28       }
29     }
30     return res;
31   }

 1     vector<string> findRelativeRanks(vector<int>& score) {
 2         int n=score.size();
 3         map<int,int,greater<int>>num2index;
 4         for(int i=0;i<n;i++)num2index[score[i]]=i;
 5         vector<string>ans(n);
 6         int i=0;
 7         for(auto mPair:num2index){
 8             int index=mPair.second;
 9             if(i==0){
10                 ans[index]="Gold Medal";
11             }else if(i==1){
12                 ans[index]="Silver Medal";
13             }else if(i==2){
14                 ans[index]="Bronze Medal";
15             }else ans[index]+=to_string(i+1);
16             i++;
17         }
18         return ans;
19     }