Amazon vs Palo Alto Networks Interview Questions
Amazon lists 1,968 LeetCode interview questions while Palo Alto Networks lists 46. They share 43 problems — 2% of Amazon's bank and 93% of Palo Alto Networks's. Focus on the overlap first, then drill into 1,925 Amazon-only and 3 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 43 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and Palo Alto Networks.
Step 2 — Company-specific depth: Add Amazon-specific problems like Trapping Rain Water, Number of Islands, Best Time to Buy and Sell Stock and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Amazon skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
43 Shared Questions
High-priority problems to practice for both Amazon and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Median of Two Sorted Arrays | Hard |
| Koko Eating Bananas | Medium |
| Valid Parentheses | Easy |
| Longest Common Prefix | Easy |
| Subarray Sum Equals K | Medium |
| Merge Sorted Array | Easy |
| Search in Rotated Sorted Array | Medium |
| Merge Two Sorted Lists | Easy |
| Sliding Window Maximum | Hard |
| Insert Delete GetRandom O(1) | Medium |
| Word Break | Medium |
| Min Stack | Medium |
| Binary Tree Zigzag Level Order Traversal | Medium |
| Binary Tree Level Order Traversal | Medium |
| String Compression | Medium |
| Integer to Roman | Medium |
| Basic Calculator | Hard |
| Diameter of Binary Tree | Easy |
| Linked List Cycle | Easy |
| Maximum Profit in Job Scheduling | Hard |
| Basic Calculator II | Medium |
| Decode String | Medium |
| Reverse Linked List II | Medium |
Showing top 30 of 43 shared problems.
Unique to Amazon (1,925)
Problems in Amazon's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Reorganize String | Medium |
| 3Sum | Medium |
| Container With Most Water | Medium |
| Course Schedule | Medium |
| Merge k Sorted Lists | Hard |
| Rotting Oranges | Medium |
| Top K Frequent Elements | Medium |
| Maximum Subarray | Medium |
| Longest Consecutive Sequence | Medium |
Unique to Palo Alto Networks (3)
Problems in Palo Alto Networks's list that do not appear at Amazon.
Frequently Asked Questions
How many LeetCode questions do Amazon and Palo Alto Networks share?
Amazon and Palo Alto Networks share 43 LeetCode interview questions. 1925 problems appear only in Amazon's list and 3 appear only in Palo Alto Networks's list.
What topics overlap most between Amazon and Palo Alto Networks?
The most common shared topics between Amazon and Palo Alto Networks are Array (13 shared questions), String (11 shared questions), Hash Table (9 shared questions), Linked List (5 shared questions), Math (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or Palo Alto Networks?
Amazon has 527 Easy, 1074 Medium, and 367 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Amazon has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Amazon and Palo Alto Networks?
Start with the 43 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 3 Palo Alto Networks-specific questions to round out your prep.