Oracle vs Rubrik Interview Questions
Oracle lists 314 LeetCode interview questions while Rubrik lists 35. They share 6 problems — 2% of Oracle's bank and 17% of Rubrik's. Focus on the overlap first, then drill into 308 Oracle-only and 29 Rubrik-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and Rubrik.
Step 2 — Company-specific depth: Add Oracle-specific problems like Longest Substring Without Repeating Characters, Number of Islands, Two Sum and Rubrik-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Rubrik skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both Oracle and Rubrik.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Task Scheduler | Medium |
| Next Permutation | Medium |
| Design Circular Queue | Medium |
| Remove Invalid Parentheses | Hard |
Unique to Oracle (308)
Problems in Oracle's list that do not appear at Rubrik.
| Problem | Difficulty |
|---|---|
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| Two Sum | Easy |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
Unique to Rubrik (29)
Problems in Rubrik's list that do not appear at Oracle.
Frequently Asked Questions
How many LeetCode questions do Oracle and Rubrik share?
Oracle and Rubrik share 6 LeetCode interview questions. 308 problems appear only in Oracle's list and 29 appear only in Rubrik's list.
What topics overlap most between Oracle and Rubrik?
The most common shared topics between Oracle and Rubrik are Array (4 shared questions), Hash Table (3 shared questions), Design (3 shared questions), Linked List (2 shared questions), Doubly-Linked List (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Oracle or Rubrik?
Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Rubrik has 2 Easy, 22 Medium, and 11 Hard questions. Rubrik has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Oracle and Rubrik?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 20 Rubrik-specific questions to round out your prep.