Top 50 Array LeetCode Questions Asked in Microsoft
Arrays are one of the most fundamental data structures tested in Microsoft software engineering interviews. Many coding problems in the interview process require a strong understanding of array manipulation, two-pointer techniques, sliding window patterns, and hash-based lookups.
In this guide, we have compiled 50 of the most frequently asked array-related LeetCode problems reported in Microsoft interviews. The list includes each question’s difficulty level, interview frequency, and a direct link to the LeetCode problem, so you can quickly jump in and start practicing.
Mastering these problems will help you build confidence in solving array-based interview questions, which are commonly used to evaluate a candidate’s ability to write efficient and optimized code.
Below is a curated list of the top array LeetCode questions asked in Microsoft interviews.
| Sl.No | Question | Difficulty | Frequency | LeetCode Link |
|---|
| 1 | Two Sum | EASY | 100.00% | Solve |
| 2 | Trapping Rain Water | HARD | 85.90% | Solve |
| 3 | Merge Sorted Array | EASY | 81.40% | Solve |
| 4 | Group Anagrams | MEDIUM | 78.90% | Solve |
| 5 | 3Sum | MEDIUM | 76.70% | Solve |
| 6 | Merge Intervals | MEDIUM | 75.80% | Solve |
| 7 | Meeting Scheduler | MEDIUM | 75.50% | Solve |
| 8 | Number of Islands | MEDIUM | 75.50% | Solve |
| 9 | Median of Two Sorted Arrays | HARD | 75.30% | Solve |
| 10 | Container With Most Water | MEDIUM | 75.10% | Solve |
| 11 | Best Time to Buy and Sell Stock | EASY | 73.40% | Solve |
| 12 | Maximum Subarray | MEDIUM | 71.10% | Solve |
| 13 | Maximal Square | MEDIUM | 71.00% | Solve |
| 14 | Longest Increasing Subsequence | MEDIUM | 71.00% | Solve |
| 15 | Jump Game | MEDIUM | 69.80% | Solve |
| 16 | Coin Change | MEDIUM | 68.40% | Solve |
| 17 | Product of Array Except Self | MEDIUM | 68.40% | Solve |
| 18 | Spiral Matrix | MEDIUM | 67.20% | Solve |
| 19 | Search in Rotated Sorted Array | MEDIUM | 67.10% | Solve |
| 20 | Longest Consecutive Sequence | MEDIUM | 66.20% | Solve |
| 21 | Rotate Image | MEDIUM | 63.90% | Solve |
| 22 | Word Search | MEDIUM | 63.60% | Solve |
| 23 | Next Permutation | MEDIUM | 63.20% | Solve |
| 24 | Remove Duplicates from Sorted Array | EASY | 62.90% | Solve |
| 25 | Subarray Sum Equals K | MEDIUM | 62.00% | Solve |
| 26 | Largest Rectangle in Histogram | HARD | 61.50% | Solve |
| 27 | Find First and Last Position of Element in Sorted Array | MEDIUM | 61.10% | Solve |
| 28 | Valid Sudoku | MEDIUM | 61.10% | Solve |
| 29 | Word Break | MEDIUM | 60.60% | Solve |
| 30 | Max Consecutive Ones | EASY | 59.50% | Solve |
| 31 | Majority Element | EASY | 59.50% | Solve |
| 32 | First Missing Positive | HARD | 59.10% | Solve |
| 33 | Jump Game II | MEDIUM | 59.10% | Solve |
| 34 | Subsets | MEDIUM | 58.90% | Solve |
| 35 | Set Matrix Zeroes | MEDIUM | 58.70% | Solve |
| 36 | 4Sum | MEDIUM | 57.60% | Solve |
| 37 | Sort Colors | MEDIUM | 56.40% | Solve |
| 38 | Search a 2D Matrix | MEDIUM | 56.10% | Solve |
| 39 | Pascal's Triangle | EASY | 55.40% | Solve |
| 40 | Single Number | EASY | 55.40% | Solve |
| 41 | N-Queens | HARD | 53.70% | Solve |
| 42 | Word Break II | HARD | 53.30% | Solve |
| 43 | Top K Frequent Elements | MEDIUM | 53.00% | Solve |
| 44 | House Robber | MEDIUM | 53.00% | Solve |
| 45 | Random Pick with Weight | MEDIUM | 53.00% | Solve |
| 46 | Combination Sum | MEDIUM | 52.80% | Solve |
| 47 | Remove Element | EASY | 52.80% | Solve |
| 48 | Plus One | EASY | 51.20% | Solve |
| 49 | Permutations | MEDIUM | 50.20% | Solve |
| 50 | Search Insert Position | EASY | 49.10% | Solve |
You can also track your progress and practice these questions using our tool:
Track your progress with our Microsoft interview Progress tracker
How to Prepare for Array Questions in Microsoft Interviews
To perform well in Microsoft coding interviews, it’s important to understand common array problem-solving patterns rather than memorizing solutions.
Some useful preparation strategies include:
- Practicing two-pointer and sliding window techniques
- Understanding prefix sums and hash map optimizations
- Analyzing time and space complexity before writing code
- Solving problems under time constraints to simulate real interview conditions
Consistent practice with real interview problems will significantly improve your coding speed, accuracy, and problem-solving approach during technical interviews.
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