Reverse Nodes in k-Group: which companies ask it and how to practise

Reverse Nodes in k-Group is a Hard problem that 27 companies are reported to ask. This page shows who, how often and how recently, what the question tests, and how to practise it out loud with an interviewer who asks follow-ups. We link to the original problem statement instead of copying it.

Which companies ask Reverse Nodes in k-Group?

Public company lists attribute Reverse Nodes in k-Group, a Hard problem, to 27 companies. The most frequent askers are Cadence, Qualcomm and Arista Networks. 9 reports are from the last six months. It mainly tests linked list and recursion. Use this as a practice guide, not a promise.

Practise this kind of question aloud

Who asks Reverse Nodes in k-Group

27 companies appear in the public lists for this question. By how often each is reported: Cadence (very often), Qualcomm (very often), Arista Networks (very often), Sigmoid (very often), MathWorks (often), Zeta (often), ZScaler (often), Microsoft (often), josh technology (often) and Autodesk (often), and 17 more. 9 of them were reported in the last six months, Qualcomm, Microsoft and Amazon among them.

These are candidate reports collected in public lists, not statements from the companies. They are a good guide to what to practise and a poor guide to what you will be asked: interviewers change questions, and the same company asks different questions by team and level. Last reviewed 25 October 2026.

What Reverse Nodes in k-Group tests

It is rated Hard, so a correct brute force with a clear path to the better idea is a good result; interviewers watch how you reason when the answer is not obvious and how you use their hints.

Linked lists test pointer discipline: what you save before you overwrite a link, the head and tail edge cases, and whether a dummy node simplifies the code.

Recursion needs a base case, a smaller call, and a clear picture of the stack. Say the depth and whether you could do it iteratively.

How to practise it

Do not just solve it silently. In a real interview you explain the approach before you code, write while you talk, and defend the solution to follow-ups. Set a timer, say the brute force and its cost first, then improve it, and finish by stating the time and space complexity and two edge cases you tested.

On giveinterview you can take this kind of question as a spoken interview: the AI interviewer opens with the problem, watches you code, asks cross-questions and ends with a scorecard. Your first 3 single-question interviews are free for life, every interview report is free, and a new account also gets 6 welcome credits.

Read the original statement here: https://leetcode.com/problems/reverse-nodes-in-k-group/ (opens the publisher's page). The statement is theirs; we do not reproduce it.

Questions to practise next

If you can solve Reverse Nodes in k-Group, try these next, chosen because they share its main topic and many of the same companies: LRU Cache (Medium), Merge k Sorted Lists (Hard), Merge Two Sorted Lists (Easy), Add Two Numbers (Medium), Reverse Linked List (Easy) and LFU Cache (Hard). Each has its own page in the questions list.

Frequently asked questions

Is Reverse Nodes in k-Group asked at Amazon?

Amazon appears in the public lists for Reverse Nodes in k-Group, reported often. Treat that as a reason to practise it, not a promise you will be asked it.

How hard is Reverse Nodes in k-Group?