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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. void swap(int* a, int* b) { 
  4.   int temp = *a;
  5.   *a = *b;
  6.   *b = temp;
  7. }
  8. void printArray(int *a, int length) { 
  9.   printf("[");
  10.   int i;
  11.   for (i = 0; i < length; i++) { 
  12.     printf("%d",a[i]);
  13.     if (i != length - 1) printf(", ");
  14.   }
  15.   printf("]\n");
  16. }
  17. void combinations(int *array,int n,int i,int *currSol,int length) { 
  18.   if (length == i){
  19.      printArray(currSol,length);
  20.      return;
  21.   }
  22.   int j;
  23.   for (j = 0; j < n; j++) { 
  24.      currSol[i] = array[j];
  25.      combinations(array,n,i+1,currSol,length);
  26.   }
  27.   return;
  28. }
  29.  
  30. int main() { 
  31. int arr[] = {1,2,3};
  32. int sol[4];
  33. combinations(arr,3,0,sol,4);
  34. return 0;
  35. }
Success #stdin #stdout 0.01s 1676KB
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stdin
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Standard input is empty
stdout
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[1, 1, 1, 1]
[1, 1, 1, 2]
[1, 1, 1, 3]
[1, 1, 2, 1]
[1, 1, 2, 2]
[1, 1, 2, 3]
[1, 1, 3, 1]
[1, 1, 3, 2]
[1, 1, 3, 3]
[1, 2, 1, 1]
[1, 2, 1, 2]
[1, 2, 1, 3]
[1, 2, 2, 1]
[1, 2, 2, 2]
[1, 2, 2, 3]
[1, 2, 3, 1]
[1, 2, 3, 2]
[1, 2, 3, 3]
[1, 3, 1, 1]
[1, 3, 1, 2]
[1, 3, 1, 3]
[1, 3, 2, 1]
[1, 3, 2, 2]
[1, 3, 2, 3]
[1, 3, 3, 1]
[1, 3, 3, 2]
[1, 3, 3, 3]
[2, 1, 1, 1]
[2, 1, 1, 2]
[2, 1, 1, 3]
[2, 1, 2, 1]
[2, 1, 2, 2]
[2, 1, 2, 3]
[2, 1, 3, 1]
[2, 1, 3, 2]
[2, 1, 3, 3]
[2, 2, 1, 1]
[2, 2, 1, 2]
[2, 2, 1, 3]
[2, 2, 2, 1]
[2, 2, 2, 2]
[2, 2, 2, 3]
[2, 2, 3, 1]
[2, 2, 3, 2]
[2, 2, 3, 3]
[2, 3, 1, 1]
[2, 3, 1, 2]
[2, 3, 1, 3]
[2, 3, 2, 1]
[2, 3, 2, 2]
[2, 3, 2, 3]
[2, 3, 3, 1]
[2, 3, 3, 2]
[2, 3, 3, 3]
[3, 1, 1, 1]
[3, 1, 1, 2]
[3, 1, 1, 3]
[3, 1, 2, 1]
[3, 1, 2, 2]
[3, 1, 2, 3]
[3, 1, 3, 1]
[3, 1, 3, 2]
[3, 1, 3, 3]
[3, 2, 1, 1]
[3, 2, 1, 2]
[3, 2, 1, 3]
[3, 2, 2, 1]
[3, 2, 2, 2]
[3, 2, 2, 3]
[3, 2, 3, 1]
[3, 2, 3, 2]
[3, 2, 3, 3]
[3, 3, 1, 1]
[3, 3, 1, 2]
[3, 3, 1, 3]
[3, 3, 2, 1]
[3, 3, 2, 2]
[3, 3, 2, 3]
[3, 3, 3, 1]
[3, 3, 3, 2]
[3, 3, 3, 3]
https://ideone.com/WpCDd
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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