Is it possible to use a Stack to reverse a linked list?

May 13, 2025 4 answers
Asked by CodeCrafter99
I'm curious if you can use a stack data structure to reverse a linked list and, if so, how would you go about doing it?

Answers

RethinkReverse
While using a stack to reverse a linked list is totally doable, it's not the most efficient. It involves unnecessary copying of data and requires extra space. If you have access to modify the list, a recursive approach can reverse it without additional storage, just rearranging the nodes instead.
Reply to this answer
DeBuggingDiva
I've actually tried this on paper before asking, and it seems straightforward! You just need to load everything into the stack and pop it outโ€”thatโ€™s O(n) time complexity.
Reply to this answer
ThinkAhead10
Just remember how stacks work: the first one in is the last one out. So you're reversing the order as you pop them off. Just be cautious about how you manage the pointers!
Reply to this answer
StackMaster44
Definitely! You can push all the nodes onto the stack and then pop them off, which will give you the linked list in the reversed order. Just keep in mind that while popping, you'll need to adjust the pointer to the next node each time to maintain the linked structure.
Reply to this answer

Add your answer

Answers are reviewed before publication.

Related Discussions