Palo Alto Networks vs TCS Interview Questions
Palo Alto Networks lists 46 LeetCode interview questions while TCS lists 228. They share 22 problems — 48% of Palo Alto Networks's bank and 10% of TCS's. Focus on the overlap first, then drill into 24 Palo Alto Networks-only and 206 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 22 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Palo Alto Networks and TCS.
Step 2 — Company-specific depth: Add Palo Alto Networks-specific problems like Find the Longest Equal Subarray, Logger Rate Limiter, Design HashMap and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Palo Alto Networks skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
22 Shared Questions
High-priority problems to practice for both Palo Alto Networks and TCS.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| String Compression | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Add Two Numbers | Medium |
| Search in Rotated Sorted Array | Medium |
| Group Anagrams | Medium |
| Min Stack | Medium |
| Merge Intervals | Medium |
| Merge Sorted Array | Easy |
| Median of Two Sorted Arrays | Hard |
| Integer to Roman | Medium |
| Longest Common Prefix | Easy |
| Subarray Sum Equals K | Medium |
| Linked List Cycle | Easy |
| Diameter of Binary Tree | Easy |
| Two Sum | Easy |
| Merge Two Sorted Lists | Easy |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Multiply Strings | Medium |
| Koko Eating Bananas | Medium |
| Longest Palindromic Substring | Medium |
Unique to Palo Alto Networks (24)
Problems in Palo Alto Networks's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Find the Longest Equal Subarray | Medium |
| Logger Rate Limiter | Easy |
| Design HashMap | Easy |
| Decode String | Medium |
| Minimum Number of Food Buckets to Feed the Hamsters | Medium |
| Binary Tree Level Order Traversal | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Restore IP Addresses | Medium |
| Top K Frequent Words | Medium |
| Design Twitter | Medium |
| Maximum Profit in Job Scheduling | Hard |
| Basic Calculator | Hard |
Unique to TCS (206)
Problems in TCS's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Palindrome Number | Easy |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Majority Element | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Sort Colors | Medium |
| Valid Anagram | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
| Second Highest Salary | Medium |
| Rotate Array | Medium |
Frequently Asked Questions
How many LeetCode questions do Palo Alto Networks and TCS share?
Palo Alto Networks and TCS share 22 LeetCode interview questions. 24 problems appear only in Palo Alto Networks's list and 206 appear only in TCS's list.
What topics overlap most between Palo Alto Networks and TCS?
The most common shared topics between Palo Alto Networks and TCS are Array (10 shared questions), String (8 shared questions), Hash Table (7 shared questions), Linked List (4 shared questions), Two Pointers (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Palo Alto Networks or TCS?
Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. Palo Alto Networks has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Palo Alto Networks and TCS?
Start with the 22 shared problems since they cover what both companies ask most often. Then add 20 Palo Alto Networks-specific and 20 TCS-specific questions to round out your prep.