MongoDB vs Snap Interview Questions
MongoDB lists 24 LeetCode interview questions while Snap lists 84. They share 8 problems — 33% of MongoDB's bank and 10% of Snap's. Focus on the overlap first, then drill into 16 MongoDB-only and 76 Snap-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 8 overlapping problems first. These are the highest-yield questions for candidates interviewing at both MongoDB and Snap.
Step 2 — Company-specific depth: Add MongoDB-specific problems like Word Break, Implement Trie (Prefix Tree), Intersection of Two Arrays and Snap-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Snap skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
8 Shared Questions
High-priority problems to practice for both MongoDB and Snap.
| Problem | Difficulty |
|---|---|
| Snapshot Array | Medium |
| Merge k Sorted Lists | Hard |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Course Schedule II | Medium |
| String Compression | Medium |
| Search in Rotated Sorted Array | Medium |
| Word Break II | Hard |
Unique to MongoDB (16)
Problems in MongoDB's list that do not appear at Snap.
| Problem | Difficulty |
|---|---|
| Word Break | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Intersection of Two Arrays | Easy |
| Text Justification | Hard |
| Convert JSON String to Object | Hard |
| Insert Interval | Medium |
| Web Crawler Multithreaded | Medium |
| Stock Price Fluctuation | Medium |
| Merge Two Binary Trees | Easy |
| Sliding Window Maximum | Hard |
| Lowest Common Ancestor of a Binary Tree | Medium |
| Design Search Autocomplete System | Hard |
Unique to Snap (76)
Problems in Snap's list that do not appear at MongoDB.
| Problem | Difficulty |
|---|---|
| Meeting Rooms II | Medium |
| Number of Islands | Medium |
| Word Ladder | Hard |
| Minimum Window Substring | Hard |
| Design Log Storage System | Medium |
| Making A Large Island | Hard |
| Number of Distinct Islands | Medium |
| Bus Routes | Hard |
| Basic Calculator II | Medium |
| Combination Sum | Medium |
| Reverse Words in a String | Medium |
| Bricks Falling When Hit | Hard |
Frequently Asked Questions
How many LeetCode questions do MongoDB and Snap share?
MongoDB and Snap share 8 LeetCode interview questions. 16 problems appear only in MongoDB's list and 76 appear only in Snap's list.
What topics overlap most between MongoDB and Snap?
The most common shared topics between MongoDB and Snap are Array (4 shared questions), Hash Table (3 shared questions), Binary Search (2 shared questions), Design (2 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: MongoDB or Snap?
MongoDB has 3 Easy, 15 Medium, and 6 Hard questions. Snap has 5 Easy, 52 Medium, and 27 Hard questions. Snap has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both MongoDB and Snap?
Start with the 8 shared problems since they cover what both companies ask most often. Then add 16 MongoDB-specific and 20 Snap-specific questions to round out your prep.