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  1.  #include <stdio.h>
  2.  int huge;
  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.  {  huge++;
  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.  
  21.  int static count=0;
  22.  
  23.  for (size_t i = 0; i < n - 1; ++i) {
  24.  int count=0;
  25. for (size_t j = 0; j < n - 1 - i; ++j) {
  26.  if (cmp( a[j] ,  a[j+1] )) {
  27. swap( &a[ j ] , &a[ j+1 ] );
  28. count++;
  29.  }
  30.  }
  31. if (count==0){
  32.  break;
  33.  }
  34. }
  35.  
  36.  for (size_t i = 0; i < n; ++i) {
  37.  printf("%d ", a[i]);
  38.  }
  39.  printf("\n");
  40.  
  41.  printf("swap関数は%d回呼び出される",huge);
  42.  return 0;
  43.  }
Success #stdin #stdout 0s 544KB
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1 1 2 3 4 5 5 6 9 
swap関数は10回呼び出される
https://ideone.com/9cUik6
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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