tails needs to be updated in while loop also

Best Regards
Ashish Goel
"Think positive and find fuel in failure"
+919985813081
+919966006652


On Thu, Feb 23, 2012 at 8:19 PM, Don <[email protected]> wrote:

> // Iterative merge
> struct node* SortedMerge(struct node* a, struct node* b)
> {
>   struct node* head, tail;
>
>  // Select first node
>  if (a->data < b->data)
>  {
>    head = tail = a;
>    a = a->next;
>  }
>  else
>  {
>    head = tail = b;
>    b = b->next;
>  }
>
>  // Merge lists
>  while(a && b)
>  {
>    if (a->data < b->data)
>    {
>      tail->next = a;
>      a = a->next;
>    }
>    else
>    {
>      tail->next = b;
>      b = b->next;
>    }
>  }
>  // Attach remaining list
>  tail->next = a ? a : b;
>  return head;
> }
>
>
>
> On Feb 23, 3:41 am, rahul sharma <[email protected]> wrote:
> > struct node* SortedMerge(struct node* a, struct node* b)
> > {
> >   struct node* result = NULL;
> >
> >   /* Base cases */
> >   if (a == NULL)
> >      return(b);
> >   else if (b==NULL)
> >      return(a);
> >
> >   /* Pick either a or b, and recur */
> >   if (a->data <= b->data)
> >   {
> >      result = a;
> >      result->next = SortedMerge(a->next, b);
> >   }
> >   else
> >   {
> >      result = b;
> >      result->next = SortedMerge(a, b->next);
> >   }
> >   return(result);
> >
> > }
> >
> > a : 10 20 30
> >
> > b : 10 25  35
> > wats the o/p??? 10 20 25 30 35
> > or 10 10 20 25 30????
>
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