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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4. #include <set>
  5. #include <map>
  6. #include <algorithm>
  7. using namespace std;
  8.  
  9. vector<set<string>> bar(vector<string> strs){
  10.     map<string,set<string>> m;
  11.     for(auto x: strs){
  12.         auto sorted = x;
  13.         sort(sorted.begin(), sorted.end());
  14.         set<string>& currentset = m[sorted];
  15.         currentset.insert(x);
  16.     };
  17.  
  18.     vector<set<string>> result;
  19.     for(auto itr = m.begin(); itr != m.end(); itr++){
  20.         result.push_back(itr->second);
  21.     }
  22.  
  23.     return result;
  24. }
  25.  
  26. int main()
  27. {
  28.     vector<string> strs = {string("123"), string("321"), string("555")};
  29.     auto res = bar(strs);
  30.     for(auto s: res){
  31.         for(auto str: s){
  32.             cout << str << " ";
  33.         }
  34.         cout << endl;
  35.     }
  36.     return 0;
  37. }
Success #stdin #stdout 0s 3436KB
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stdin
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Standard input is empty
stdout
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123 321 
555
https://ideone.com/DthLwZ
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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