Problem database last updated: June 20, 2025
2 problems · 0 Easy, 1 Medium, 1 Hard · Ranked #427 of 458
0 Easy
0% · avg 23%
1 Medium
50% · avg 59%
1 Hard
50% · avg 18%
Based on 2 reported problems, Dataminr interviews are significantly harder than average - 50% Hard vs 18% across all companies.
Compared to the industry average, Dataminr 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%), matrix (50%), simulation (50%), math (50%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Spiral Matrix III You start at the cell (rStart, cStart) of an rows x cols grid facing east. The northwest corner is at the first row and column in the grid, and the southeast co... | Medium | Very Likely | arraymatrixsimulation | Solve |
Maximum Building Height You want to build n new buildings in a city. The new buildings will be built in a line and are labeled from 1 to n. | Hard | Very Likely | arraymathsorting | Solve |
Spiral Matrix III
SolveYou start at the cell (rStart, cStart) of an rows x cols grid facing east. The northwest corner is at the first row and column in the grid, and the southeast co...
Maximum Building Height
SolveYou want to build n new buildings in a city. The new buildings will be built in a line and are labeled from 1 to n.
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Dataminr interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Dataminr interviews focus heavily on array, matrix, simulation 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. Dataminr 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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Dataminr has been reported to ask 2 distinct coding problems. The most common topics are array, matrix, simulation. 0 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 2 reported problems, Dataminr interviews are significantly harder than average - 50% Hard vs 18% across all companies. 50% 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, matrix, simulation. 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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