Problem database last updated: June 20, 2025
3 problems · 1 Easy, 1 Medium, 1 Hard · Ranked #312 of 458
1 Easy
33% · avg 23%
1 Medium
33% · avg 59%
1 Hard
33% · avg 18%
Based on 3 reported problems, QBurst interviews are significantly harder than average - 33% Hard vs 18% across all companies.
Compared to the industry average, QBurst puts unusual emphasis on dynamic-programming (66.7% of problems, 3.4x the industry average), 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 (66.7%), two-pointers (33.3%), greedy (33.3%). 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 |
Container With Most Water You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]). | Medium | Very Likely | arraytwo-pointersgreedy | Solve |
Burst Balloons You are given n balloons, indexed from 0 to n - 1. Each balloon is painted with a number on it represented by an array nums. You are asked to burst all the ball... | Hard | Very Likely | arraydynamic-programming | 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.
Container With Most Water
SolveYou are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]).
Burst Balloons
SolveYou are given n balloons, indexed from 0 to n - 1. Each balloon is painted with a number on it represented by an array nums. You are asked to burst all the ball...
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent QBurst interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
QBurst interviews focus heavily on array, dynamic-programming, two-pointers 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. QBurst 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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QBurst has been reported to ask 3 distinct coding problems. The most common topics are array, dynamic-programming, two-pointers. 1 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 3 reported problems, QBurst interviews are significantly harder than average - 33% Hard vs 18% across all companies. 33% 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, two-pointers. 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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