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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.  for (size_t i = 0; i < n - 1; ++i) {
  22.  	int x=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.  count++; 
  27.        x=1;
  28.  }
  29.  }
  30.  if(x==0){
  31.  	break;
  32.  }
  33.  }
  34.  
  35.  for (size_t i = 0; i < n; ++i) {
  36.  printf("%d ", a[i]);
  37.  }
  38.  printf("\n");
  39. printf("swapの回数: %d\n", count);
  40.  
  41.  return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5348KB
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stdin
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Standard input is empty
stdout
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1 1 2 3 4 5 5 6 9 
swapの回数: 10
https://ideone.com/icv99m
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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