MongoDBLeetCode Questions
VerifiedCompany-wise coding interview questions asked by MongoDB, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.
# | Problem | Difficulty | Frequency↓ | Acceptance | |
|---|---|---|---|---|---|
| #208 | Implement Trie (Prefix Tree)3 sources | Medium | 100% | 69.7% | |
| #139 | Word Break3 sources | Medium | 100% | 49.6% | |
| #349 | Intersection of Two Arrays3 sources | Easy | 100% | 78.0% | |
| #1146 | Snapshot Array3 sources | Medium | 100% | 36.8% | |
| #146 | LRU Cache3 sources | Medium | 90% | 47.6% | |
| #23 | Merge k Sorted Lists3 sources | Hard | 88% | 60.0% | |
| #68 | Text Justification3 sources | Hard | 88% | 51.5% | |
| #1242 | Web Crawler Multithreaded3 sources | Medium | 80% | 51.3% | |
| #2759 | Convert JSON String to Object3 sources | Hard | 80% | 62.2% | |
| #57 | Insert Interval3 sources | Medium | 75% | 45.5% | |
| #2034 | Stock Price Fluctuation3 sources | Medium | 75% | 49.2% | |
| #210 | Course Schedule II3 sources | Medium | 75% | 55.9% | |
| #56 | Merge Intervals3 sources | Medium | 75% | 52.3% | |
| #239 | Sliding Window Maximum3 sources | Hard | 73% | 49.0% | |
| #617 | Merge Two Binary Trees3 sources | Easy | 63% | 79.1% | |
| #33 | Search in Rotated Sorted Array3 sources | Medium | 63% | 45.2% | |
| #642 | Design Search Autocomplete System3 sources | Hard | 63% | 50.0% | |
| #1650 | Medium | 63% | 83.0% | ||
| #443 | String Compression3 sources | Medium | 63% | 60.3% | |
| #140 | Word Break II3 sources | Hard | 63% | 55.8% | |
| #21 | Merge Two Sorted Lists3 sources | Easy | 63% | 68.5% | |
| #133 | Clone Graph3 sources | Medium | 63% | 65.7% | |
| #981 | Time Based Key-Value Store3 sources | Medium | 63% | 50.0% | |
| #165 | Compare Version Numbers3 sources | Medium | 63% | 46.7% | |
| #1 | Two Sum2 sources | Easy | 63% | 0.6% | |
| #236 | Medium | 63% | 69.7% |
MongoDB Technical Interview Overview & Company-Wise Questions
Software engineering and technical interviews at MongoDB emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 26 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.
Frequently Asked Questions
What are the top LeetCode questions for MongoDB?
Leading questions include Implement Trie (Prefix Tree), Word Break, Intersection of Two Arrays. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.
Where can I practice company-wise LeetCode questions for MongoDB?
You can practice all 26 MongoDB LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.
How should I prepare for MongoDB coding rounds?
Begin by reviewing Medium-difficulty problems (16 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.