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  1. #include <set>
  2. #include <iostream>
  3. #include <cstdlib>
  4. #include <functional>
  5. using namespace std;
  6.  
  7. template < typename T >
  8. class MCmp: public std::binary_function<T,T,bool>
  9. {
  10. public:
  11. 	MCmp ( bool mode_ ) : mode ( mode_ )
  12. 	{}
  13. 	bool operator() ( const T & first , const T & second )
  14. 	{
  15. 		return mode?first<second:second<first ;
  16. 	}
  17. 	bool operator== ( const MCmp & cmp )
  18. 	{
  19. 		return mode == cmp.mode ;
  20. 	}
  21. private:
  22. 	const bool mode ;
  23. } ;
  24.  
  25.  
  26. typedef set<int, MCmp<int> > MSet ;
  27.  
  28.  
  29. MSet createMSet ( bool x )
  30. {
  31.     MCmp<int> cmp(x) ;
  32.     MSet a(cmp);
  33.     const int n=10;
  34.     for (int i = 0; i < n; i++)
  35.     	a.insert(rand() % 11);
  36. 	return a ;
  37. }
  38.  
  39. template < typename T , typename U >
  40. std::ostream & operator<< ( std::ostream & stream , const std::set<T,U> obj )
  41. {
  42.     for ( typename std::set<T,U>:: iterator it = obj.begin() , itEnd = obj.end() ; it!=itEnd ; ++it )
  43.         stream << *it << ' ' ;
  44.     return stream ;
  45. }
  46.  
  47. int main()
  48. {
  49. 	int x1 = 0 , x2 = 0 ;
  50. 	std::cin >> x1 >> x2 ;
  51. 	MSet a ( createMSet( x1 ) ) ;
  52. 	MSet b ( createMSet( x2 ) ) ;
  53.     std::cout << a << std::endl << b << std::endl ;
  54. }
  55.  
Success #stdin #stdout 0s 3480KB
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0 1 2 3 4 6 10 
10 9 8 7 5 4 3 2 0
https://ideone.com/TVLG5A
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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