Infosys vs Palo Alto Networks Interview Questions
Infosys lists 105 LeetCode interview questions while Palo Alto Networks lists 46. They share 16 problems — 15% of Infosys's bank and 35% of Palo Alto Networks's. Focus on the overlap first, then drill into 89 Infosys-only and 30 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 16 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Infosys and Palo Alto Networks.
Step 2 — Company-specific depth: Add Infosys-specific problems like Maximum Good Subtree Score, Find Building Where Alice and Bob Can Meet, Minimum Reverse Operations and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Infosys skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
16 Shared Questions
High-priority problems to practice for both Infosys and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Merge Sorted Array | Easy |
| Longest Common Prefix | Easy |
| Merge Intervals | Medium |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| Longest Palindromic Substring | Medium |
| Merge Two Sorted Lists | Easy |
| Linked List Cycle | Easy |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Koko Eating Bananas | Medium |
| Integer to Roman | Medium |
| Search in Rotated Sorted Array | Medium |
Unique to Infosys (89)
Problems in Infosys's list that do not appear at Palo Alto Networks.
Unique to Palo Alto Networks (30)
Problems in Palo Alto Networks's list that do not appear at Infosys.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| String Compression | Medium |
| Design HashMap | Easy |
| Decode String | Medium |
| Minimum Number of Food Buckets to Feed the Hamsters | Medium |
| Min Stack | Medium |
| Binary Tree Level Order Traversal | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Restore IP Addresses | Medium |
| Top K Frequent Words | Medium |
Frequently Asked Questions
How many LeetCode questions do Infosys and Palo Alto Networks share?
Infosys and Palo Alto Networks share 16 LeetCode interview questions. 89 problems appear only in Infosys's list and 30 appear only in Palo Alto Networks's list.
What topics overlap most between Infosys and Palo Alto Networks?
The most common shared topics between Infosys and Palo Alto Networks are Array (8 shared questions), Hash Table (6 shared questions), String (6 shared questions), Two Pointers (3 shared questions), Sorting (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Infosys or Palo Alto Networks?
Infosys has 32 Easy, 57 Medium, and 16 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Infosys has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Infosys and Palo Alto Networks?
Start with the 16 shared problems since they cover what both companies ask most often. Then add 20 Infosys-specific and 20 Palo Alto Networks-specific questions to round out your prep.