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  1. #include <vector>
  2. #include <iostream>
  3. #include <algorithm>
  4.  
  5. using namespace std;
  6.  
  7. class SomeClass{
  8. public:
  9.     SomeClass(size_t value = 0) :
  10.         value(value)
  11.     {
  12.     }
  13.     bool operator <(const SomeClass &right)const{
  14.         return value < right.value;
  15.     }
  16.     size_t &data(){
  17.          return value;
  18.     }
  19.     private:
  20.     	size_t value;
  21.  
  22. };
  23.  
  24.  
  25. int main() {
  26.     vector< SomeClass > arr = {3,1,2};
  27.     std::sort( begin(arr), end(arr) );
  28.     for(auto &elem: arr) {
  29.        cout<<elem.data()<<" ";
  30.     }
  31.     cout<<endl;
  32.     std::sort( begin(arr), end(arr), [](auto left, auto right){left=1;return !(left<right);} );
  33.     for(auto &elem: arr) {
  34.        cout<<elem.data()<<" ";
  35.     }
  36.     return 0;
  37. }
Success #stdin #stdout 0s 3472KB
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Standard input is empty
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1 2 3 
2 3 1
https://ideone.com/3gftTL
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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