Palo Alto Networks vs Twitter Interview Questions
Palo Alto Networks lists 46 LeetCode interview questions while Twitter lists 53. They share 7 problems — 15% of Palo Alto Networks's bank and 13% of Twitter's. Focus on the overlap first, then drill into 39 Palo Alto Networks-only and 46 Twitter-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 7 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Palo Alto Networks and Twitter.
Step 2 — Company-specific depth: Add Palo Alto Networks-specific problems like Find the Longest Equal Subarray, Logger Rate Limiter, String Compression and Twitter-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Twitter skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
7 Shared Questions
High-priority problems to practice for both Palo Alto Networks and Twitter.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Integer to Roman | Medium |
| Design Twitter | Medium |
| Valid Parentheses | Easy |
| Multiply Strings | Medium |
Unique to Palo Alto Networks (39)
Problems in Palo Alto Networks's list that do not appear at Twitter.
| Problem | Difficulty |
|---|---|
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| String Compression | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Add Two Numbers | Medium |
| Design HashMap | Easy |
| Search in Rotated Sorted Array | Medium |
| Group Anagrams | Medium |
| Decode String | Medium |
| Minimum Number of Food Buckets to Feed the Hamsters | Medium |
| Min Stack | Medium |
| Binary Tree Level Order Traversal | Medium |
Unique to Twitter (46)
Problems in Twitter's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Merge k Sorted Lists | Hard |
| Trapping Rain Water | Hard |
| Wildcard Matching | Hard |
| 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 |
| Happy Number | Easy |
| Reverse Linked List | Easy |
Frequently Asked Questions
How many LeetCode questions do Palo Alto Networks and Twitter share?
Palo Alto Networks and Twitter share 7 LeetCode interview questions. 39 problems appear only in Palo Alto Networks's list and 46 appear only in Twitter's list.
What topics overlap most between Palo Alto Networks and Twitter?
The most common shared topics between Palo Alto Networks and Twitter are Hash Table (4 shared questions), Design (3 shared questions), Math (3 shared questions), String (3 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Palo Alto Networks or Twitter?
Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Twitter has 8 Easy, 33 Medium, and 12 Hard questions. Twitter has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Palo Alto Networks and Twitter?
Start with the 7 shared problems since they cover what both companies ask most often. Then add 20 Palo Alto Networks-specific and 20 Twitter-specific questions to round out your prep.