Apple vs Zenefits Interview Questions
Apple lists 300 LeetCode interview questions while Zenefits lists 21. They share 14 problems — 5% of Apple's bank and 67% of Zenefits's. Focus on the overlap first, then drill into 286 Apple-only and 7 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 14 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Zenefits.
Step 2 — Company-specific depth: Add Apple-specific problems like Two Sum, Merge Intervals, Best Time to Buy and Sell Stock 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
14 Shared Questions
High-priority problems to practice for both Apple and Zenefits.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Reverse Linked List | Easy |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Valid Parentheses | Easy |
| Valid Palindrome | Easy |
| Trapping Rain Water | Hard |
| Median of Two Sorted Arrays | Hard |
| Min Stack | Medium |
| Generate Parentheses | Medium |
| Sliding Window Maximum | Hard |
| Convert Sorted List to Binary Search Tree | Medium |
| Shortest Distance from All Buildings | Hard |
Unique to Apple (286)
Problems in Apple's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Design Hit Counter | Medium |
| Longest Common Prefix | Easy |
| Rotate Array | Medium |
| Valid Sudoku | Medium |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Product of Array Except Self | Medium |
| Rotate Image | Medium |
Unique to Zenefits (7)
Problems in Zenefits's list that do not appear at Apple.
| Problem | Difficulty |
|---|---|
| Graph Valid Tree | Medium |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| Majority Element | Easy |
| N-Queens II | Hard |
| Flatten 2D Vector | Medium |
| Verify Preorder Sequence in Binary Search Tree | Medium |
Frequently Asked Questions
How many LeetCode questions do Apple and Zenefits share?
Apple and Zenefits share 14 LeetCode interview questions. 286 problems appear only in Apple's list and 7 appear only in Zenefits's list.
What topics overlap most between Apple and Zenefits?
The most common shared topics between Apple and Zenefits are Array (5 shared questions), Breadth-First Search (4 shared questions), Linked List (3 shared questions), Depth-First Search (3 shared questions), String (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Zenefits?
Apple has 76 Easy, 178 Medium, and 46 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 Apple and Zenefits?
Start with the 14 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 7 Zenefits-specific questions to round out your prep.