Intel vs Oracle Interview Questions
Intel lists 25 LeetCode interview questions while Oracle lists 314. They share 21 problems — 84% of Intel's bank and 7% of Oracle's. Focus on the overlap first, then drill into 4 Intel-only and 293 Oracle-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 21 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Intel and Oracle.
Step 2 — Company-specific depth: Add Intel-specific problems like Find Consecutive Integers from a Data Stream, Maximum Nesting Depth of the Parentheses, Count Primes and Oracle-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
21 Shared Questions
High-priority problems to practice for both Intel and Oracle.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Valid Parentheses | Easy |
| Number of Islands | Medium |
| Copy List with Random Pointer | Medium |
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| LRU Cache | Medium |
| Reverse Integer | Medium |
| Maximum Subarray | Medium |
| Climbing Stairs | Easy |
| Merge Two Sorted Lists | Easy |
| Reverse Words in a String | Medium |
| Add Two Numbers | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Palindrome Number | Easy |
| Container With Most Water | Medium |
| Merge Sorted Array | Easy |
| Rotate Image | Medium |
| Linked List Cycle | Easy |
| Valid Palindrome | Easy |
| Top K Frequent Words | Medium |
Unique to Intel (4)
Problems in Intel's list that do not appear at Oracle.
| Problem | Difficulty |
|---|---|
| Find Consecutive Integers from a Data Stream | Medium |
| Maximum Nesting Depth of the Parentheses | Easy |
| Count Primes | Medium |
| Best Time to Buy and Sell Stock II | Medium |
Unique to Oracle (293)
Problems in Oracle's list that do not appear at Intel.
| Problem | Difficulty |
|---|---|
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| LFU Cache | Hard |
| Search in Rotated Sorted Array | Medium |
| Asteroid Collision | Medium |
Frequently Asked Questions
How many LeetCode questions do Intel and Oracle share?
Intel and Oracle share 21 LeetCode interview questions. 4 problems appear only in Intel's list and 293 appear only in Oracle's list.
What topics overlap most between Intel and Oracle?
The most common shared topics between Intel and Oracle are Array (9 shared questions), Two Pointers (6 shared questions), Hash Table (6 shared questions), String (5 shared questions), Linked List (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Intel or Oracle?
Intel has 10 Easy, 14 Medium, and 1 Hard questions. Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Intel and Oracle?
Start with the 21 shared problems since they cover what both companies ask most often. Then add 4 Intel-specific and 20 Oracle-specific questions to round out your prep.