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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int stack[100], n;
  6.  
  7. void subsets(int level) {
  8.      if( level <= n ) {
  9.          for(int i = stack[level-1]+1; i <= n; ++i) {
  10.              stack[level] = i;
  11.              for(int j = 1; j <= level;++j)
  12.              cout<<stack[j]<<" ";
  13.              cout<<endl;
  14.              subsets(level+1);
  15.          }
  16.      }
  17. }
  18.  
  19. int main() {
  20. 	n = 3;
  21. 	subsets(1);
  22. }
Success #stdin #stdout 0.01s 5424KB
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stdin
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Standard input is empty
stdout
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1 
1 2 
1 2 3 
1 3 
2 
2 3 
3
https://ideone.com/Pkd5IX
subsets
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
secret

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