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  1. #include <iostream>
  2.  
  3. void general(int N, int k);
  4.  
  5. int main()
  6. {
  7.   using namespace std;
  8.  
  9.   general(1, 0);
  10.   cout << endl;
  11.  
  12.   general(1, 1);
  13.   cout << endl;
  14.  
  15.   general(1, 2);
  16.   cout << endl;
  17.  
  18.   general(2, 0);
  19.   cout << endl;
  20.  
  21.   general(2, 1);
  22.   cout << endl;
  23.  
  24.   general(2, 2);
  25.   cout << endl;
  26.  
  27.   general(3, 0);
  28.   cout << endl;
  29.  
  30.   general(3, 1);
  31.   cout << endl;
  32.  
  33.   general(3, 2);
  34.   cout << endl;
  35.  
  36.   return 0;
  37. }
  38.  
  39. void inner(int N, int k, int* temp, int round)
  40. {
  41.   using namespace std;
  42.  
  43.   for (int i = 1; i <= N ;i++)
  44.   {
  45.     if (k > 0)
  46.     {
  47.       temp[round] = i;
  48.       inner(i, k - 1, temp, round + 1);
  49.     }
  50.     else
  51.     {
  52.       cout << "[";
  53.       for (int j = 0; j < round; j++)
  54.         cout << temp[j] << ",";
  55.       cout << i;
  56.       cout << "] ";
  57.     }
  58.   }
  59. }
  60.  
  61. void general(int N, int k)
  62. {
  63.   int* temp = new int[k];
  64.  
  65.   inner(N, k, temp, 0);
  66.  
  67.   delete [] temp;
  68. }
Success #stdin #stdout 0s 2984KB
comments (?)
stdin
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Standard input is empty
stdout
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[1] 
[1,1] 
[1,1,1] 
[1] [2] 
[1,1] [2,1] [2,2] 
[1,1,1] [2,1,1] [2,2,1] [2,2,2] 
[1] [2] [3] 
[1,1] [2,1] [2,2] [3,1] [3,2] [3,3] 
[1,1,1] [2,1,1] [2,2,1] [2,2,2] [3,1,1] [3,2,1] [3,2,2] [3,3,1] [3,3,2] [3,3,3]
https://ideone.com/KkxbQq
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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