How often are these problems asked?
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent IMC interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Problem database last updated: June 20, 2025
I
IMC Coding Interview Questions
6 problems · 0 Easy, 5 Medium, 1 Hard · Ranked #221 of 458
Difficulty breakdown
0 Easy
0% · avg 23%
5 Medium
83% · avg 59%
1 Hard
17% · avg 18%
Top topics
array
83.3%
matrix
50%5.7x
stack
50%5.8x
binary-search
33.3%3.8x
breadth-first-search
33.3%4x
design
33.3%5.8x
Interview profile
Based on 6 reported problems, IMC interviews are in line with industry averages - 17% Hard vs 18% overall. The majority (83%) of questions are Medium difficulty, which is typical for companies that want to see solid fundamentals without excessive trick questions.
Compared to the industry average, IMC puts unusual emphasis on stack (50% of problems, 5.8x the industry average), design (33.3% of problems, 5.8x the industry average), matrix (50% of problems, 5.7x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (83.3%), matrix (50%), stack (50%), binary-search (33.3%). Problems below are sorted by frequency, the ones at the top are asked most often.
All 6 problems
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Find the Safest Path in a Grid You are given a 0-indexed 2D matrix grid of size n x n, where (r, c) represents: | Medium | Very Likely | arraybinary-searchbreadth-first-search | Solve |
Asteroid Collision We are given an array asteroids of integers representing asteroids in a row. The indices of the asteroid in the array represent their relative position in space... | Medium | Very Likely | arraystacksimulation | Solve |
Design a Stack With Increment Operation Design a stack that supports increment operations on its elements. | Medium | Likely | arraystackdesign | Solve |
Maximum Side Length of a Square with Sum Less than or Equal to Threshold Given a m x n matrix mat and an integer threshold, return the maximum side-length of a square with a sum less than or equal to threshold or return 0 if there is... | Medium | Likely | arraybinary-searchmatrix | Solve |
Shortest Path in a Grid with Obstacles Elimination You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). You can move up, down, left, or right from and to an empty cell... | Hard | Likely | arraybreadth-first-searchmatrix | Solve |
Min Stack Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. | Medium | Likely | stackdesign | Solve |
Find the Safest Path in a Grid
SolveYou are given a 0-indexed 2D matrix grid of size n x n, where (r, c) represents:
MediumVery Likely
arraybinary-searchbreadth-first-search
Asteroid Collision
SolveWe are given an array asteroids of integers representing asteroids in a row. The indices of the asteroid in the array represent their relative position in space...
MediumVery Likely
arraystacksimulation
Design a Stack With Increment Operation
SolveDesign a stack that supports increment operations on its elements.
MediumLikely
arraystackdesign
Maximum Side Length of a Square with Sum Less than or Equal to Threshold
SolveGiven a m x n matrix mat and an integer threshold, return the maximum side-length of a square with a sum less than or equal to threshold or return 0 if there is...
MediumLikely
arraybinary-searchmatrix
Shortest Path in a Grid with Obstacles Elimination
SolveYou are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). You can move up, down, left, or right from and to an empty cell...
HardLikely
arraybreadth-first-searchmatrix
Min Stack
SolveDesign a stack that supports push, pop, top, and retrieving the minimum element in constant time.
MediumLikely
stackdesign
Preparing for your IMC coding interview
IMC interviews focus heavily on array, matrix, stack 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. IMC 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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Frequently Asked Questions
What coding problems does IMC ask in interviews?add
IMC has been reported to ask 6 distinct coding problems. The most common topics are array, matrix, stack. 0 are Easy difficulty, 5 are Medium, and 1 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
How hard are IMC coding interviews?add
Based on 6 reported problems, IMC interviews are in line with industry averages - 17% Hard vs 18% overall. 83% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
How should I prepare for a IMC coding interview?add
Start with the highest-frequency problems listed on this page. Focus on the core topics: array, matrix, stack. 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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