Representative Linked List problems
Add Two Numbers requires careful linked-list pointer manipulation to sum digits while handling carries efficiently in interview settings.
Open problem page#19 Remove Nth Node From End of ListRemove the nth node from the end of a linked list using a two-pointer approach to solve efficiently.
Open problem page#21 Merge Two Sorted ListsMerge two sorted linked lists by splicing nodes into one sorted list using linked-list pointer manipulation and recursion.
Open problem page#23 Merge k Sorted ListsMerge k Sorted Lists requires efficiently combining multiple sorted linked lists into one using pointers and priority queues.
Open problem page#24 Swap Nodes in PairsLearn how to swap every adjacent linked-list pair by rewiring nodes safely without changing values or breaking the remaining chain.
Open problem page#25 Reverse Nodes in k-GroupReverse Nodes in k-Group challenges you to reverse segments of a linked list in groups of size k.
Open problem page#61 Rotate ListRotate a singly linked list to the right by k positions using careful pointer manipulation and two-pointer traversal techniques.
Open problem page#82 Remove Duplicates from Sorted List IIRemove duplicates from a sorted linked list, leaving only distinct values, and return the modified list in sorted order.
Open problem page#83 Remove Duplicates from Sorted ListEfficiently remove duplicates from a sorted linked list using precise pointer manipulation while maintaining node order integrity.
Open problem pageLinked List interview questions usually collapse into a small set of repeatable moves. This page groups those GhostInterview problem pages together so you can stay inside one pattern family, compare representative questions, and practice explanations that transfer across multiple prompts. If you are trying to sharpen one interview weakness instead of browsing the entire library, start here.
Why Linked List Matters In Coding Interviews
Interviewers rarely care about the label alone. They care about whether you can recognize when the Linked List pattern applies, explain why it applies, and avoid the failure modes that usually show up under time pressure. That is why this page focuses on the family of problems rather than a single isolated example.
Pattern families that show up here
- Linked-list pointer manipulation
- Array scanning plus hash lookup
- Iterative pointer reversal
Use this page to narrow the session
Start from this topic hub, choose one or two representative problems, and then open the detailed problem pages only after you know which version of the pattern you want to reinforce.
How To Practice This Topic
The best workflow is to keep the prep block narrow. Pick one easy or medium problem to confirm the base pattern, then one medium or hard problem to test whether the explanation still holds when the constraints tighten. Once the logic is stable, move into GhostInterview to rehearse the live explanation flow.
Focus on transfer, not title count
Solving more Linked List titles is less useful than understanding how the same move changes across examples. Try to describe what stays the same and what changes from one problem to the next.
Use the problem page when you want the exact breakdown
This topic hub is the discovery layer. The single-problem pages are where you get the answer-first summary, examples, constraints, approach, complexity, pitfalls, and solver CTA.
How GhostInterview Fits
GhostInterview works best after you know which pattern family you are inside. Use this page to choose the right Linked List problem, then use the solver to get the answer path, complexity framing, and follow-up support without switching into a generic study flow.
FAQ
What does the Linked List topic usually test in interviews?
Linked List questions usually test whether you can spot the underlying pattern quickly, explain the trade-offs, and move from intuition to implementation without losing clarity.
How should I use this Linked List topic page?
Use it as a pattern hub. Start with the representative problems on this page, compare the common approach, and then open the exact problem page when you want the full breakdown.
How many GhostInterview problem pages are in the Linked List group?
This topic page currently groups 66 indexed GhostInterview problem pages under the Linked List family.
Should I practice this topic before harder patterns?
That depends on your current gaps. If Linked List is already a weak spot in interviews, it is usually better to stabilize it first before moving into more advanced or less frequent patterns.
Where does GhostInterview fit once I pick a Linked List problem?
The topic page narrows the pattern family. The problem page gives the exact breakdown. GhostInterview is the solver layer when you need direct help with execution, complexity, and follow-up handling.
Stay close to the same reasoning family
Need direct help once you choose a Linked List problem?
Use GhostInterview as the solver layer after you select the exact prompt. Capture the question, get the answer path and complexity framing, and keep the workflow inside the same topic family.