DE Shaw vs Palo Alto Networks Interview Questions
DE Shaw lists 105 LeetCode interview questions while Palo Alto Networks lists 46. They share 10 problems — 10% of DE Shaw's bank and 22% of Palo Alto Networks's. Focus on the overlap first, then drill into 95 DE Shaw-only and 36 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 10 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DE Shaw and Palo Alto Networks.
Step 2 — Company-specific depth: Add DE Shaw-specific problems like Binary Tree Cameras, Find Minimum Cost to Remove Array Elements, Maximum Number of Subsequences After One Inserting and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: DE Shaw skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
10 Shared Questions
High-priority problems to practice for both DE Shaw and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Sliding Window Maximum | Hard |
| Koko Eating Bananas | Medium |
| LRU Cache | Medium |
| Median of Two Sorted Arrays | Hard |
| Basic Calculator II | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Merge Sorted Array | Easy |
| Two Sum | Easy |
Unique to DE Shaw (95)
Problems in DE Shaw's list that do not appear at Palo Alto Networks.
Unique to Palo Alto Networks (36)
Problems in Palo Alto Networks's list that do not appear at DE Shaw.
| Problem | Difficulty |
|---|---|
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| String Compression | 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 |
| Merge Intervals | Medium |
Frequently Asked Questions
How many LeetCode questions do DE Shaw and Palo Alto Networks share?
DE Shaw and Palo Alto Networks share 10 LeetCode interview questions. 95 problems appear only in DE Shaw's list and 36 appear only in Palo Alto Networks's list.
What topics overlap most between DE Shaw and Palo Alto Networks?
The most common shared topics between DE Shaw and Palo Alto Networks are Array (6 shared questions), Hash Table (4 shared questions), String (3 shared questions), Stack (2 shared questions), Math (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DE Shaw or Palo Alto Networks?
DE Shaw has 11 Easy, 64 Medium, and 30 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. DE Shaw has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DE Shaw and Palo Alto Networks?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 DE Shaw-specific and 20 Palo Alto Networks-specific questions to round out your prep.