Apple vs Palo Alto Networks Interview Questions
Apple lists 300 LeetCode interview questions while Palo Alto Networks lists 46. They share 34 problems — 11% of Apple's bank and 74% of Palo Alto Networks's. Focus on the overlap first, then drill into 266 Apple-only and 12 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 34 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Palo Alto Networks.
Step 2 — Company-specific depth: Add Apple-specific problems like Number of Islands, Best Time to Buy and Sell Stock, Design Hit Counter and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Apple skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
34 Shared Questions
High-priority problems to practice for both Apple and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Two Sum | Easy |
| Merge Intervals | Medium |
| Longest Common Prefix | Easy |
| Group Anagrams | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Merge Two Sorted Lists | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Basic Calculator II | Medium |
| Min Stack | Medium |
| Merge Sorted Array | Easy |
| Word Break | Medium |
| String Compression | Medium |
| Binary Tree Level Order Traversal | Medium |
| Design HashMap | Easy |
| Longest Palindromic Substring | Medium |
| Decode String | Medium |
| Search in Rotated Sorted Array | Medium |
| Meeting Rooms | Easy |
| Sliding Window Maximum | Hard |
| Path Sum | Easy |
| Add Two Numbers | Medium |
| Reverse Linked List II | Medium |
| Basic Calculator | Hard |
| Reconstruct Itinerary | Hard |
| Logger Rate Limiter | Easy |
| Top K Frequent Words | Medium |
Showing top 30 of 34 shared problems.
Unique to Apple (266)
Problems in Apple's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Design Hit Counter | Medium |
| Rotate Array | Medium |
| Reverse Linked List | Easy |
| Valid Sudoku | Medium |
| Top K Frequent Elements | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Product of Array Except Self | Medium |
| Valid Palindrome | Easy |
| Rotate Image | Medium |
Unique to Palo Alto Networks (12)
Problems in Palo Alto Networks's list that do not appear at Apple.
Frequently Asked Questions
How many LeetCode questions do Apple and Palo Alto Networks share?
Apple and Palo Alto Networks share 34 LeetCode interview questions. 266 problems appear only in Apple's list and 12 appear only in Palo Alto Networks's list.
What topics overlap most between Apple and Palo Alto Networks?
The most common shared topics between Apple and Palo Alto Networks are Array (15 shared questions), String (12 shared questions), Hash Table (10 shared questions), Sorting (6 shared questions), Linked List (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Palo Alto Networks?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Apple has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and Palo Alto Networks?
Start with the 34 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 12 Palo Alto Networks-specific questions to round out your prep.