Can You Reverse a Linked List Using a Stack?

Have you thought about trying it on paper? It’s a good way to visualize the process before jumping into code. Just pushing everything to the stack and popping might seem easy, but adjusting pointers can be tricky.

Sure! You can absolutely use a stack to reverse a linked list. Just push each element onto the stack and then pop them off again. This will yield the elements in reverse order. It runs in O(n) time, which is pretty efficient!

While it’s technically doable, using a stack for this isn't the best approach. You end up copying data and using more memory than necessary. If you have the ability to modify the list directly, I’d suggest reversing it in-place instead. It’s usually a cleaner and more efficient method.

Think about how stacks operate: the last item you put in is the first one out. So when you push all the nodes, popping them off will give you the reversed linked list. But keep in mind, you need to adjust the 'next' pointers of your nodes each time you pop them from the stack.