3m LeetCode Interview Questions
Practice 22 real coding problems frequently asked in 3m technical interviews. Master these questions to ace your next 3m software engineering interview.
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3m Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Permutation in String 100% | MediumM | Solve→ |
Can Place Flowers 83% | EasyE | Solve→ |
Merge Sorted Array 80% | EasyE | Solve→ |
Daily Temperatures 78% | MediumM | Solve→ |
Zero Array Transformation II 71% | MediumM | Solve→ |
LRU Cache 68% | MediumM | Solve→ |
Random Pick with Weight 68% | MediumM | Solve→ |
Two Sum 66% | EasyE | Solve→ |
Fraction to Recurring Decimal 66% | MediumM | Solve→ |
Binary Tree Vertical Order Traversal 63% | MediumM | Solve→ |
Maximum Profit in Job Scheduling 60% | HardH | Solve→ |
Add Two Numbers 53% | MediumM | Solve→ |
Add Strings 51% | EasyE | Solve→ |
Ransom Note 48% | EasyE | Solve→ |
Remove Letter To Equalize Frequency 48% | EasyE | Solve→ |
Minimum Window Substring 48% | HardH | Solve→ |
Subarray Sum Equals K 48% | MediumM | Solve→ |
Sort Integers by The Power Value 40% | MediumM | Solve→ |
Linked List Cycle 35% | EasyE | Solve→ |
Lowest Common Ancestor of a Binary Tree III 34% | MediumM | Solve→ |
Majority Element 34% | EasyE | Solve→ |
Merge Strings Alternately 20% | EasyE | Solve→ |
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Frequently Asked Questions
What LeetCode problems does 3m ask in interviews?
3m commonly asks 22 coding problems in technical interviews, including Permutation in String, Can Place Flowers, Merge Sorted Array. The difficulty breakdown is 9 Easy, 11 Medium, and 2 Hard problems.
How should I prepare for a 3m coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. 3m interviews typically emphasize Hash Table and Array. Practice explaining your thought process while coding.
What is the difficulty level of 3m coding interviews?
Based on our data, 3m interviews include 9 Easy (41%), 11 Medium (50%), and 2 Hard (9%) problems.
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