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  1. #include <stdio.h>
  2.  
  3. int cmp(int x, int y) // compare x and y
  4. {
  5.     return x > y; // 1 if x > y, 0 otherwise
  6. }
  7.  
  8. void swap(int *x, int *y)
  9. {
  10.     int tmp = *x;
  11.  
  12.     *x = *y;
  13.     *y = tmp;
  14. }
  15.  
  16. int main(void)
  17. {
  18.     int a[] = {3, 1, 4, 1, 5, 9, 2, 6, 5}; // array to be sorted
  19.     size_t n = sizeof a / sizeof a[0]; // number of elements
  20.     int count=0;
  21.  
  22.     for (size_t i = 0; i < n - 1; ++i) {
  23.         for (size_t j = 0; j < n - 1 - i; ++j) {
  24.             if (cmp( a[j], a[j+1] )) {
  25.                 swap( &a[j], &a[j+1] );
  26.                 count++;
  27.             }
  28.         }
  29.     }
  30.  
  31.     printf("%d\n",count);
  32.  
  33.     for (size_t i = 0; i < n; ++i) {
  34.         printf("%d ", a[i]);
  35.     }
  36.     printf("\n");
  37.  
  38.     return 0;
  39. }
Success #stdin #stdout 0s 544KB
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https://ideone.com/Ax0DJR
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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