Sorting LeetCode Questions Asked in Microsoft Interviews
Sorting is one of the most fundamental concepts in Microsoft software engineering interviews. Many problems rely on sorting as a preprocessing step to simplify logic and improve efficiency.
Interview questions often test your understanding of how sorting can be combined with other techniques like greedy algorithms, two pointers, and binary search to solve complex problems.
In this guide, we have compiled some of the most frequently asked Sorting problems reported in Microsoft interviews. Each question includes its difficulty level, interview frequency, and a direct link to the LeetCode problem so that you can start practicing immediately.
Below is a curated list of Sorting LeetCode questions asked in Microsoft interviews.
| Sl.No | Question | Difficulty | Frequency | LeetCode Link |
|---|
| 1 | Merge Sorted Array | EASY | 81.40% | Solve |
| 2 | Group Anagrams | MEDIUM | 78.90% | Solve |
| 3 | 3Sum | MEDIUM | 76.70% | Solve |
| 4 | Merge Intervals | MEDIUM | 75.80% | Solve |
| 5 | Meeting Scheduler | MEDIUM | 75.50% | Solve |
| 6 | Majority Element | EASY | 59.50% | Solve |
| 7 | Reorganize String | MEDIUM | 58.00% | Solve |
| 8 | 4Sum | MEDIUM | 57.60% | Solve |
| 9 | Sort Colors | MEDIUM | 56.40% | Solve |
| 10 | Find Median from Data Stream | HARD | 55.40% | Solve |
| 11 | Top K Frequent Elements | MEDIUM | 53.00% | Solve |
| 12 | Valid Anagram | EASY | 51.40% | Solve |
| 13 | Kth Largest Element in an Array | MEDIUM | 46.70% | Solve |
| 14 | 3Sum Closest | MEDIUM | 42.70% | Solve |
| 15 | Missing Number | EASY | 42.20% | Solve |
| 16 | Squares of a Sorted Array | EASY | 37.90% | Solve |
| 17 | Intersection of Two Arrays | EASY | 37.90% | Solve |
| 18 | Meeting Rooms II | MEDIUM | 37.90% | Solve |
| 19 | Permutations II | MEDIUM | 28.10% | Solve |
| 20 | Wiggle Sort | MEDIUM | 27.50% | Solve |
| 21 | Insertion Sort List | MEDIUM | 20.80% | Solve |
| 22 | Employee Free Time | HARD | 1.95% | Solve |
| 23 | Meeting Rooms | EASY | 1.73% | Solve |
| 24 | Largest Number | MEDIUM | 1.62% | Solve |
| 25 | Sort List | MEDIUM | 1.49% | Solve |
| 26 | Kth Smallest Element in a Sorted Matrix | MEDIUM | 1.48% | Solve |
| 27 | Majority Element II | MEDIUM | 1.39% | Solve |
| 28 | Accounts Merge | MEDIUM | 1.13% | Solve |
| 29 | Queue Reconstruction by Height | MEDIUM | 0.90% | Solve |
| 30 | Find K Closest Elements | MEDIUM | 0.79% | Solve |
| 31 | Intersection of Two Arrays II | EASY | 0.78% | Solve |
| 32 | Smallest Range Covering Elements from K Lists | HARD | 0.78% | Solve |
| 33 | Contains Duplicate | EASY | 0.56% | Solve |
| 34 | Valid Triangle Number | MEDIUM | 0.53% | Solve |
| 35 | Relative Sort Array | EASY | 0.47% | Solve |
| 36 | Russian Doll Envelopes | HARD | 0.47% | Solve |
| 37 | Top K Frequent Words | MEDIUM | 0.44% | Solve |
| 38 | Pancake Sorting | MEDIUM | 0.37% | Solve |
| 39 | Sort Array By Parity | EASY | 0.34% | Solve |
| 40 | K-diff Pairs in an Array | EASY | 0.32% | Solve |
| 41 | Third Maximum Number | EASY | 0.27% | Solve |
| 42 | Minimum Number of Arrows to Burst Balloons | MEDIUM | 0.24% | Solve |
| 43 | Minimum Area Rectangle | MEDIUM | 0.22% | Solve |
| 44 | Non-overlapping Intervals | MEDIUM | 0.22% | Solve |
| 45 | Rearrange String k Distance Apart | HARD | 0.19% | Solve |
| 46 | Task Scheduler | MEDIUM | 0.12% | Solve |
| 47 | K Closest Points to Origin | MEDIUM | 0.11% | Solve |
You can also track your progress and practice these questions using our tool:
Microsoft LeetCode Interview Questions Tracker
How to Prepare for Sorting Questions in Microsoft Interviews
To perform well in Microsoft coding interviews, it’s important to understand how and when to use sorting effectively.
Some useful preparation strategies include:
- Learning common sorting algorithms (Quick Sort, Merge Sort, etc.)
- Practicing problems where sorting is used as a preprocessing step
- Combining sorting with two pointers or greedy techniques
- Understanding time complexity trade-offs (O(n log n) vs O(n))
- Recognizing when sorting simplifies otherwise complex problems
Strong fundamentals in sorting can significantly improve your problem-solving efficiency and coding speed.
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