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  1. #include <iostream>
  2.  
  3. void print( unsigned int n, const unsigned int A[] )
  4. {
  5.     for( unsigned int i = 0 ; i <= n ; ++i ) std::cout << A[i] << ' ' ;
  6.     std::cout << '\n' ;
  7. }
  8.  
  9. void print_partitions( unsigned int n, unsigned int A[], unsigned int j = 0 )
  10. {
  11.     if( n > 0 )
  12.     {
  13.         A[j] = n ;
  14.         print( j, A ) ;
  15.         for( unsigned int i = j ? A[j-1] : 1 ; i <= n/2 ; ++i )
  16.         {
  17.             A[j] = i ;
  18.             print_partitions( n-i, A, j+1 ) ;
  19.         }
  20.     }
  21. }
  22.  
  23. int main()
  24. {
  25.     constexpr unsigned int N = 6 ;
  26.     unsigned int A[N] ;
  27.     print_partitions( N, A );
  28. }
  29.  
Success #stdin #stdout 0s 2896KB
comments (?)
stdin
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Standard input is empty
stdout
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6 
1 5 
1 1 4 
1 1 1 3 
1 1 1 1 2 
1 1 1 1 1 1 
1 1 2 2 
1 2 3 
2 4 
2 2 2 
3 3
https://ideone.com/zzA4mo
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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