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

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