X vs Zeta Interview Questions
X lists 51 LeetCode interview questions while Zeta lists 30. They share 3 problems — 6% of X's bank and 10% of Zeta's. Focus on the overlap first, then drill into 48 X-only and 27 Zeta-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 3 overlapping problems first. These are the highest-yield questions for candidates interviewing at both X and Zeta.
Step 2 — Company-specific depth: Add X-specific problems like Tweet Counts Per Frequency, LRU Cache, Flatten Nested List Iterator and Zeta-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zeta skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
3 Shared Questions
High-priority problems to practice for both X and Zeta.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| Insert Delete GetRandom O(1) | Medium |
Unique to X (48)
Problems in X's list that do not appear at Zeta.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| LRU Cache | Medium |
| Flatten Nested List Iterator | Medium |
| Implement Trie (Prefix Tree) | 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 |
| Valid Parentheses | Easy |
Unique to Zeta (27)
Problems in Zeta's list that do not appear at X.
Frequently Asked Questions
How many LeetCode questions do X and Zeta share?
X and Zeta share 3 LeetCode interview questions. 48 problems appear only in X's list and 27 appear only in Zeta's list.
What topics overlap most between X and Zeta?
The most common shared topics between X and Zeta are Array (3 shared questions), Two Pointers (1 shared questions), Dynamic Programming (1 shared questions), Stack (1 shared questions), Monotonic Stack (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: X or Zeta?
X has 8 Easy, 31 Medium, and 12 Hard questions. Zeta has 0 Easy, 20 Medium, and 10 Hard questions. Zeta has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both X and Zeta?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 X-specific and 20 Zeta-specific questions to round out your prep.