change array references to pointer references

[Seijuro]

I was just wondering if I was doing this right. What I am trying to do is change the array references to pointer references and then use pointers and dereferenced pointers rather than array references. Any help would be appreciated!!

original

void sort(int *arr, int size)
{
  int i, j, k, l  ;
  for (l = 1  ; l < size ; l = 3*l+1)
  {
    /* do nothing */
  }

  l = (l - 1) / 3 ;

  while (l > 0)
  {
    for (i = 0 ; i < size ; i++)
    {
      for (j = i ; j >= l ; j -= l)
      {
	if (arr[j] < arr[j-l])
	{
	  int t ;
	  t = arr[j] ;
          arr[j] = arr[j-l] ;
	  arr[j-l] = t ;
	}
      }
    }

#if DEBUG_LEVEL > 5
    for (i = 0 ; i < COUNT ; i++)
    {
      printf(&quot;l=%d -- sorter[%d]=%d\n&quot;, l, i, arr[i]) ;
    }
#endif

    l = (l - 1)/3 ;
  }

#if DEBUG_LEVEL > 0
  checksort(arr, size) ;
#endif

Mine

void sort_p(int *arr, int size)
{
  int *i, *j, k, *l, *p  ;
  int *t ;

  for (l = arr + 1  ; l < arr+size ; l = 3*l+1)

    /* do nothing */


  l = (l - 1) / 3 ;

  while (l > 0)

    for (p = arr ; p < arr + size  ; p++)

      for (j = p ; j >= l ; j -= l)

	if (*j < *(j-l))


	  t = *j ;
          *j = *(j-l) ;
	  *(j-l) = t ;




#if DEBUG_LEVEL > 5
    for (i = 0 ; i < COUNT ; i++)

      printf(&quot;l=%d -- sorter[%d]=%d\n&quot;, l, i, *i) ;

#endif

    l = (l - 1)/3 ;


#if DEBUG_LEVEL > 0
  checksort(arr, size) ;
#endif
}

 

[LF28]

Hi there,

you did it right except where you said:
(in sort_p)

int *t;

this should be:

int t;

since t is an int, not a pointer to int.

Greetings,
Tobi