CommVault Systems Interview Experience | Coding Round On-Campus Placements
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Round 1:Coding RoundThe platform was geeekd.com, and it really has a very bad interface and an even worse text editor.There were 5 questions, with choice between either C+...
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Round 1:Coding Round The platform was geeekd.com, and it really has a very bad interface and an even worse text editor. There were 5 questions, with choice between either C++ or Java. Time given was 50 min. Question 1: Print the values in the boundary nodes of a tree in an anti-clockwise direction. https://www.geeksforgeeks.org/dsa/boundary-traversal-of-binary-tree/ Question 2: Merge two sorted Linked lists. Question 3: Print the minimum number of swaps required to rearrange a string of Cs and Ds, such that no two C or D are consecutive. For example, if input string is CCCDDD,
output will be 3. (CCCDDD -> CCDCDD -> CDCCDD -> CDCDCD) Question 4: Given a number of nodes, such that they form connected clusters. Two different clusters will not have any inter-connection. Find the number of pairs of nodes (a, b) that can exist such that a and b belong to two different clusters. Eg, 1->2 and 3->4 be two clusters,
output will be 4. ((1, 3), (1, 4), (2, 3), (2, 4)) Question 5: Don't Remember.
Round 2 Result not yet declared for Round 1.
Round 3 Result not yet declared for Round 2.
About This Question
This is a reported interview question from a commvault interview for a data science role during the phone screen round reported in 2025.
It covers the following topics: Binary Tree, Linked List, Strings, Trees .
Topics
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About Commvault Interview Reports
This question was reported by a candidate who interviewed at Commvault. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Commvault are the higher-signal extractions to take from this report.
For broader preparation context, the Commvault interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Commvault reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Commvault Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Commvault reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.