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How many pointers are required to reverse a link list?
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Answer Posted / patrick
You cannot must have a pointer to a pointer if you want to
modify the pointer.
void reverse(node** head)
{
node* cur = *head;
*head = null;
while (cur)
{
node* next = cur->next;
cur->next = *head;
*head = cur;
cur = next;
}
}
Besides the head pointer, you will need two local pointers.
| Is This Answer Correct ? | 4 Yes | 1 No |
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