Roblox vs X Interview Questions
Roblox lists 56 LeetCode interview questions while X lists 51. They share 6 problems — 11% of Roblox's bank and 12% of X's. Focus on the overlap first, then drill into 50 Roblox-only and 45 X-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Roblox and X.
Step 2 — Company-specific depth: Add Roblox-specific problems like Candy Crush, Reorganize String, Number of Ways to Wear Different Hats to Each Other and X-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: X skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both Roblox and X.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Implement Trie (Prefix Tree) | Medium |
| Number of Black Blocks | Medium |
| Merge Intervals | Medium |
| Trapping Rain Water | Hard |
| Insert Delete GetRandom O(1) | Medium |
Unique to Roblox (50)
Problems in Roblox's list that do not appear at X.
| Problem | Difficulty |
|---|---|
| Candy Crush | Medium |
| Reorganize String | Medium |
| Number of Ways to Wear Different Hats to Each Other | Hard |
| Text Justification | Hard |
| Maximize Distance to Closest Person | Medium |
| Task Scheduler | Medium |
| Course Schedule II | Medium |
| Design Hit Counter | Medium |
| Design Search Autocomplete System | Hard |
| Integer to English Words | Hard |
| Count Number of Nice Subarrays | Medium |
| Group the People Given the Group Size They Belong To | Medium |
Unique to X (45)
Problems in X's list that do not appear at Roblox.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| LRU Cache | Medium |
| Flatten Nested List Iterator | Medium |
| Design Twitter | Medium |
| Binary Gap | Easy |
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Word Break II | Hard |
| Alien Dictionary | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| Merge k Sorted Lists | Hard |
Frequently Asked Questions
How many LeetCode questions do Roblox and X share?
Roblox and X share 6 LeetCode interview questions. 50 problems appear only in Roblox's list and 45 appear only in X's list.
What topics overlap most between Roblox and X?
The most common shared topics between Roblox and X are Array (4 shared questions), Hash Table (3 shared questions), String (2 shared questions), Stack (2 shared questions), Design (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Roblox or X?
Roblox has 8 Easy, 35 Medium, and 13 Hard questions. X has 8 Easy, 31 Medium, and 12 Hard questions. X has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Roblox and X?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 Roblox-specific and 20 X-specific questions to round out your prep.