Oracle vs Turing Interview Questions
Oracle lists 314 LeetCode interview questions while Turing lists 37. They share 19 problems — 6% of Oracle's bank and 51% of Turing's. Focus on the overlap first, then drill into 295 Oracle-only and 18 Turing-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 19 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and Turing.
Step 2 — Company-specific depth: Add Oracle-specific problems like LRU Cache, Top K Frequent Elements, Sliding Window Maximum and Turing-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
19 Shared Questions
High-priority problems to practice for both Oracle and Turing.
| Problem | Difficulty |
|---|---|
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| Two Sum | Easy |
| Group Anagrams | Medium |
| Valid Parentheses | Easy |
| Merge Intervals | Medium |
| Longest Palindromic Substring | Medium |
| 3Sum | Medium |
| Maximum Subarray | Medium |
| Koko Eating Bananas | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Median of Two Sorted Arrays | Hard |
| Kth Largest Element in an Array | Medium |
| Degree of an Array | Easy |
| Product of Array Except Self | Medium |
| Find First and Last Position of Element in Sorted Array | Medium |
| Jump Game | Medium |
| Validate IP Address | Medium |
Unique to Oracle (295)
Problems in Oracle's list that do not appear at Turing.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Merge k Sorted Lists | Hard |
| Meeting Rooms II | 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 |
| Remove All Adjacent Duplicates in String II | Medium |
| Container With Most Water | Medium |
Unique to Turing (18)
Problems in Turing's list that do not appear at Oracle.
Frequently Asked Questions
How many LeetCode questions do Oracle and Turing share?
Oracle and Turing share 19 LeetCode interview questions. 295 problems appear only in Oracle's list and 18 appear only in Turing's list.
What topics overlap most between Oracle and Turing?
The most common shared topics between Oracle and Turing are Array (15 shared questions), String (6 shared questions), Hash Table (4 shared questions), Sorting (4 shared questions), Dynamic Programming (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Oracle or Turing?
Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Turing has 10 Easy, 23 Medium, and 4 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Oracle and Turing?
Start with the 19 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 18 Turing-specific questions to round out your prep.