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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.  { int tmp = *x;
  10.  
  11.  *x = *y;
  12.  *y = tmp;
  13.  }
  14.  
  15.  int main(void)
  16.  {
  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 swap_count = 0;
  21.  for (size_t i = 0; i < n - 1; ++i) {
  22.  	int swapped = 0;
  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.  	++swap_count;
  27.  	swapped = 1;
  28.  }
  29.  }
  30. if(swapped == 0)
  31.     break;
  32.  }
  33.  
  34. printf("swap_count = %d\n", swap_count);
  35.  
  36.  for (size_t i = 0; i < n; ++i) {
  37.  printf("%d ", a[i]);
  38.  }
  39.  printf("\n");
  40.  
  41.  return 0;
  42.  }
  43.  
  44.  
  45.  
  46.  
Success #stdin #stdout 0s 5336KB
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Standard input is empty
stdout
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swap_count = 10
1 1 2 3 4 5 5 6 9
https://ideone.com/x5JkXk
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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