Oracle vs Palo Alto Networks Interview Questions
Oracle lists 314 LeetCode interview questions while Palo Alto Networks lists 46. They share 38 problems — 12% of Oracle's bank and 83% of Palo Alto Networks's. Focus on the overlap first, then drill into 276 Oracle-only and 8 Palo Alto Networks-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 38 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and Palo Alto Networks.
Step 2 — Company-specific depth: Add Oracle-specific problems like Number of Islands, Top K Frequent Elements, Merge k Sorted Lists and Palo Alto Networks-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Oracle skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
38 Shared Questions
High-priority problems to practice for both Oracle and Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Two Sum | Easy |
| Group Anagrams | Medium |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Merge Intervals | Medium |
| Longest Palindromic Substring | Medium |
| Search in Rotated Sorted Array | Medium |
| Min Stack | Medium |
| Koko Eating Bananas | Medium |
| Decode String | Medium |
| Longest Common Prefix | Easy |
| Binary Tree Zigzag Level Order Traversal | Medium |
| Median of Two Sorted Arrays | Hard |
| Diameter of Binary Tree | Easy |
| Restore IP Addresses | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Binary Tree Level Order Traversal | Medium |
| Logger Rate Limiter | Easy |
| String Compression | Medium |
| Subarray Sum Equals K | Medium |
| Integer to Roman | Medium |
| Add Two Numbers | Medium |
| Meeting Rooms | Easy |
| Top K Frequent Words | Medium |
| Design HashMap | Easy |
| Maximum Profit in Job Scheduling | Hard |
| Merge Two Sorted Lists | Easy |
| Linked List Cycle | Easy |
Showing top 30 of 38 shared problems.
Unique to Oracle (276)
Problems in Oracle's list that do not appear at Palo Alto Networks.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Top K Frequent Elements | Medium |
| Merge k Sorted Lists | Hard |
| Meeting Rooms II | Medium |
| Spiral Matrix | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| LFU Cache | Hard |
| Asteroid Collision | Medium |
| Remove All Adjacent Duplicates in String II | Medium |
| Container With Most Water | Medium |
| 3Sum | Medium |
| Reverse Linked List | Easy |
Unique to Palo Alto Networks (8)
Problems in Palo Alto Networks's list that do not appear at Oracle.
Frequently Asked Questions
How many LeetCode questions do Oracle and Palo Alto Networks share?
Oracle and Palo Alto Networks share 38 LeetCode interview questions. 276 problems appear only in Oracle's list and 8 appear only in Palo Alto Networks's list.
What topics overlap most between Oracle and Palo Alto Networks?
The most common shared topics between Oracle and Palo Alto Networks are Array (14 shared questions), Hash Table (11 shared questions), String (10 shared questions), Linked List (5 shared questions), Design (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Oracle or Palo Alto Networks?
Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Palo Alto Networks has 12 Easy, 29 Medium, and 5 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Oracle and Palo Alto Networks?
Start with the 38 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 8 Palo Alto Networks-specific questions to round out your prep.