Amazon vs Zenefits Interview Questions
Amazon lists 1,968 LeetCode interview questions while Zenefits lists 21. They share 19 problems — 1% of Amazon's bank and 90% of Zenefits's. Focus on the overlap first, then drill into 1,949 Amazon-only and 2 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 19 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and Zenefits.
Step 2 — Company-specific depth: Add Amazon-specific problems like Two Sum, Longest Substring Without Repeating Characters, 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
19 Shared Questions
High-priority problems to practice for both Amazon and Zenefits.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Trapping Rain Water | Hard |
| Number of Islands | Medium |
| Median of Two Sorted Arrays | Hard |
| Valid Parentheses | Easy |
| Course Schedule | Medium |
| Generate Parentheses | Medium |
| Majority Element | Easy |
| Course Schedule II | Medium |
| Sliding Window Maximum | Hard |
| Min Stack | Medium |
| Reverse Linked List | Easy |
| Valid Palindrome | Easy |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| N-Queens II | Hard |
| Convert Sorted List to Binary Search Tree | Medium |
| Shortest Distance from All Buildings | Hard |
| Graph Valid Tree | Medium |
Unique to Amazon (1,949)
Problems in Amazon's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| Reorganize String | Medium |
| 3Sum | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Container With Most Water | Medium |
| Koko Eating Bananas | Medium |
| Merge k Sorted Lists | Hard |
Unique to Zenefits (2)
Problems in Zenefits's list that do not appear at Amazon.
| Problem | Difficulty |
|---|---|
| Flatten 2D Vector | Medium |
| Verify Preorder Sequence in Binary Search Tree | Medium |
Frequently Asked Questions
How many LeetCode questions do Amazon and Zenefits share?
Amazon and Zenefits share 19 LeetCode interview questions. 1949 problems appear only in Amazon's list and 2 appear only in Zenefits's list.
What topics overlap most between Amazon and Zenefits?
The most common shared topics between Amazon and Zenefits are Array (7 shared questions), Breadth-First Search (5 shared questions), Depth-First Search (4 shared questions), String (4 shared questions), Hash Table (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or Zenefits?
Amazon has 527 Easy, 1074 Medium, and 367 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 Amazon and Zenefits?
Start with the 19 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 2 Zenefits-specific questions to round out your prep.