Uber vs X Interview Questions
Uber lists 362 LeetCode interview questions while X lists 51. They share 17 problems — 5% of Uber's bank and 33% of X's. Focus on the overlap first, then drill into 345 Uber-only and 34 X-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 17 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Uber and X.
Step 2 — Company-specific depth: Add Uber-specific problems like Bus Routes, Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit, Number of Islands and X-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Uber skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
17 Shared Questions
High-priority problems to practice for both Uber and X.
| Problem | Difficulty |
|---|---|
| Alien Dictionary | Hard |
| Insert Delete GetRandom O(1) | Medium |
| LRU Cache | Medium |
| Merge k Sorted Lists | Hard |
| Regular Expression Matching | Hard |
| Word Break II | Hard |
| Happy Number | Easy |
| Reverse Linked List | Easy |
| One Edit Distance | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Number of Black Blocks | Medium |
| Merge Intervals | Medium |
| Trapping Rain Water | Hard |
| The Skyline Problem | Hard |
| Valid Parentheses | Easy |
| Time Needed to Buy Tickets | Easy |
| Design Twitter | Medium |
Unique to Uber (345)
Problems in Uber's list that do not appear at X.
Unique to X (34)
Problems in X's list that do not appear at Uber.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| Flatten Nested List Iterator | Medium |
| Binary Gap | Easy |
| Integer to Roman | Medium |
| Max Points on a Line | Hard |
| Trapping Rain Water II | Hard |
| Finding the Users Active Minutes | Medium |
| Invalid Tweets | Easy |
| Best Meeting Point | Hard |
| Multiply Strings | Medium |
| Wildcard Matching | Hard |
| Minimum Genetic Mutation | Medium |
Frequently Asked Questions
How many LeetCode questions do Uber and X share?
Uber and X share 17 LeetCode interview questions. 345 problems appear only in Uber's list and 34 appear only in X's list.
What topics overlap most between Uber and X?
The most common shared topics between Uber and X are Array (8 shared questions), Hash Table (7 shared questions), String (6 shared questions), Design (4 shared questions), Linked List (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Uber or X?
Uber has 45 Easy, 215 Medium, and 102 Hard questions. X has 8 Easy, 31 Medium, and 12 Hard questions. Uber has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Uber and X?
Start with the 17 shared problems since they cover what both companies ask most often. Then add 20 Uber-specific and 20 X-specific questions to round out your prep.