Coding interview questions
Oracle Coding Interview Questions (DSA)
The 50 DSA problems Oracle has asked most in the last six months, most-asked first. 50 of them have a full breakdown with diagrams and code. Tick them off as you go.


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By difficulty: Easy (8) · Medium (37) · Hard (5)
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Frequently Asked Questions
What questions does Oracle ask in coding interviews?
Oracle coding interviews focus on Array, Backtracking, Binary Search, Binary Search Tree, and other data structure problems. We compiled 50 questions from real Oracle interviews. The most common topics are Array, Backtracking, Binary Search, Binary Search Tree, Binary Tree. Filter by topic to see what comes up most often.
How many Oracle coding interview questions are there?
InterviewSkool has 50 Oracle coding interview questions: 8 Easy, 37 Medium, and 5 Hard. Most Oracle interviews focus on Medium-difficulty problems, so prioritize those in your prep.
How should I prepare for Oracle coding interviews?
Start with Medium difficulty problems. Group by topic (Array, Tree, DP) to build pattern recognition. Aim to solve 30 to 40 problems before your interview. Then practice under pressure with a mock interview.
Are Oracle coding interview questions free?
Yes. All 50 Oracle coding interview questions are free to browse with no sign-up required. You can filter by difficulty and topic tags. Start a mock interview with a free credit to practice under real pressure.
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