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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};
  19.     size_t n = sizeof a / sizeof a[0];     
  20.     size_t count = 0;                      
  21.     size_t passes = 0;                     
  22.  
  23.     for (size_t i = 0; i < n - 1; ++i) {
  24.         int swapped = 0;                  
  25.         ++passes;                         
  26.         for (size_t j = 0; j < n - 1 - i; ++j) {
  27.             if (cmp(a[j], a[j + 1])) {
  28.                 swap(&a[j], &a[j + 1]);
  29.                 ++count;
  30.                 swapped = 1;              
  31.             }
  32.         }
  33.         if (!swapped) break;              
  34.     }
  35.  
  36.     for (size_t i = 0; i < n; ++i) {
  37.         printf("%d ", a[i]);
  38.     }
  39.     printf("\n");
  40.     printf("swap count = %zu\n", count);
  41.     printf("passes     = %zu\n", passes);
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0s 5356KB
comments (?)
stdin
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Standard input is empty
stdout
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1 1 2 3 4 5 5 6 9 
swap count = 10
passes     = 5
https://ideone.com/xK85IJ
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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