Problem database last updated: June 20, 2025
4 problems · 2 Easy, 1 Medium, 1 Hard · Ranked #275 of 458
2 Easy
50% · avg 23%
1 Medium
25% · avg 59%
1 Hard
25% · avg 18%
Based on 4 reported problems, DevRev interviews are slightly harder than average - 25% Hard vs 18% across all companies.
Compared to the industry average, DevRev puts unusual emphasis on array (100% of problems, 1.7x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (100%), dynamic-programming (25%), hash-table (25%), counting (25%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Best Time to Buy and Sell Stock You are given an array prices where prices[i] is the price of a given stock on the ith day. | Easy | Very Likely | arraydynamic-programming | Solve |
Check If Array Pairs Are Divisible by k Given an array of integers arr of even length n and an integer k. | Medium | Very Likely | arrayhash-tablecounting | Solve |
Text Justification Given an array of strings words and a width maxWidth, format the text such that each line has exactly maxWidth characters and is fully (left and right) justifie... | Hard | Very Likely | arraystringsimulation | Solve |
Move Zeroes Given an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements. | Easy | Very Likely | arraytwo-pointers | Solve |
Best Time to Buy and Sell Stock
SolveYou are given an array prices where prices[i] is the price of a given stock on the ith day.
Check If Array Pairs Are Divisible by k
SolveGiven an array of integers arr of even length n and an integer k.
Text Justification
SolveGiven an array of strings words and a width maxWidth, format the text such that each line has exactly maxWidth characters and is fully (left and right) justifie...
Move Zeroes
SolveGiven an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements.
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent DevRev interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
DevRev interviews focus heavily on array, dynamic-programming, hash-table problems. If you're short on time, these are the categories to prioritize. The problems on this page are sorted by frequency, so start from the top and work your way down.
Beyond solving problems, practice explaining your approach. DevRev interviewers care about your thought process - how you break down a problem, consider edge cases, and evaluate tradeoffs between solutions. A clean O(n) solution you can explain clearly beats an O(log n) solution you can't articulate.
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DevRev has been reported to ask 4 distinct coding problems. The most common topics are array, dynamic-programming, hash-table. 2 are Easy difficulty, 1 are Medium, and 1 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 4 reported problems, DevRev interviews are slightly harder than average - 25% Hard vs 18% across all companies. 25% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
Start with the highest-frequency problems listed on this page. Focus on the core topics: array, dynamic-programming, hash-table. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
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