// 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 <rahul23111...@gmail.com> 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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