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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <memory>
  5. using namespace std;
  6.  
  7.  
  8. class Ship
  9. {
  10. public:
  11.     Ship(){}
  12.     Ship(string name, int distance)
  13.     {
  14.         mName = name;
  15.         mDistance = distance;
  16.     }
  17.     ~Ship(){}
  18.     friend ostream & operator << (ostream &out, const Ship &ship);
  19.     friend bool operator<(const shared_ptr<Ship>& left, const shared_ptr<Ship>& right);
  20.  
  21. private:
  22.     string mName;
  23.     int mDistance;
  24. };
  25.  
  26. bool operator<(const shared_ptr<Ship>& left, const shared_ptr<Ship>& right)
  27. {
  28. 	return left->mDistance < right->mDistance;
  29. }
  30.  
  31. ostream & operator << (ostream &out, const Ship &ship) 
  32. {
  33.    return out << ship.mName << endl;
  34. }
  35.  
  36.  
  37. int main() {
  38. 	vector<shared_ptr<Ship>> ships;
  39. 	ships.push_back(make_shared<Ship>("some1", 20));
  40. 	ships.push_back(make_shared<Ship>("some2", 10));
  41. 	ships.push_back(make_shared<Ship>("some3", 5));
  42. 	ships.push_back(make_shared<Ship>("some4", 40));
  43.  
  44. 	sort(ships.begin(), ships.end());
  45.  
  46. 	for (auto ship : ships)
  47. 	{
  48. 		cout << *ship;
  49. 	//	delete ship;
  50. 	}
  51.  
  52. 	return 0;
  53. }
Success #stdin #stdout 0s 3436KB
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stdin
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Standard input is empty
stdout
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some3
some2
some1
some4
https://ideone.com/23uJ4v
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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