Twitter vs Zenefits Interview Questions
Twitter lists 53 LeetCode interview questions while Zenefits lists 21. They share 5 problems — 9% of Twitter's bank and 24% of Zenefits's. Focus on the overlap first, then drill into 48 Twitter-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 Twitter and Zenefits.
Step 2 — Company-specific depth: Add Twitter-specific problems like Regular Expression Matching, Integer to Roman, Merge k Sorted Lists 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 Twitter and Zenefits.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Flatten 2D Vector | Medium |
Unique to Twitter (48)
Problems in Twitter's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Merge k Sorted Lists | Hard |
| Multiply Strings | Medium |
| Wildcard Matching | Hard |
| Merge Intervals | Medium |
| Permutation Sequence | Hard |
| Pascal's Triangle | Easy |
| Word Break II | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| One Edit Distance | Medium |
Unique to Zenefits (16)
Problems in Zenefits's list that do not appear at Twitter.
| 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 Twitter and Zenefits share?
Twitter and Zenefits share 5 LeetCode interview questions. 48 problems appear only in Twitter's list and 16 appear only in Zenefits's list.
What topics overlap most between Twitter and Zenefits?
The most common shared topics between Twitter and Zenefits are Stack (2 shared questions), Linked List (2 shared questions), String (1 shared questions), Array (1 shared questions), Two Pointers (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Twitter or Zenefits?
Twitter has 8 Easy, 33 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 Twitter and Zenefits?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 20 Twitter-specific and 16 Zenefits-specific questions to round out your prep.