X vs Zenefits Interview Questions
X lists 51 LeetCode interview questions while Zenefits lists 21. They share 5 problems — 10% of X's bank and 24% of Zenefits's. Focus on the overlap first, then drill into 46 X-only and 16 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 5 overlapping problems first. These are the highest-yield questions for candidates interviewing at both X and Zenefits.
Step 2 — Company-specific depth: Add X-specific problems like Merge Intervals, Tweet Counts Per Frequency, Flatten Nested List Iterator and Zenefits-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zenefits skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
5 Shared Questions
High-priority problems to practice for both X and Zenefits.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| LRU Cache | Medium |
| Valid Parentheses | Easy |
| Reverse Linked List | Easy |
| Flatten 2D Vector | Medium |
Unique to X (46)
Problems in X's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Merge Intervals | Medium |
| Tweet Counts Per Frequency | Medium |
| Flatten Nested List Iterator | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Insert Delete GetRandom O(1) | 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 |
Unique to Zenefits (16)
Problems in Zenefits's list that do not appear at X.
| Problem | Difficulty |
|---|---|
| Median of Two Sorted Arrays | Hard |
| Graph Valid Tree | Medium |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Course Schedule II | Medium |
| Generate Parentheses | Medium |
| Min Stack | Medium |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| Majority Element | Easy |
| Convert Sorted List to Binary Search Tree | Medium |
| Sliding Window Maximum | Hard |
Frequently Asked Questions
How many LeetCode questions do X and Zenefits share?
X and Zenefits share 5 LeetCode interview questions. 46 problems appear only in X's list and 16 appear only in Zenefits's list.
What topics overlap most between X and Zenefits?
The most common shared topics between X and Zenefits are Array (2 shared questions), Two Pointers (2 shared questions), Stack (2 shared questions), Linked List (2 shared questions), Design (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: X or Zenefits?
X has 8 Easy, 31 Medium, and 12 Hard questions. Zenefits has 5 Easy, 11 Medium, and 5 Hard questions. Zenefits has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both X and Zenefits?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 20 X-specific and 16 Zenefits-specific questions to round out your prep.