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Oracle interview questions and practice

272 coding questions are known to come up in Oracle interviews (55 easy, 167 medium, 50 hard), 14 of them in the last six months. The most common topics are Array, String, Hash Table, Dynamic Programming.

Practice interviews built from public job posts and question lists. Each open post links to the original so you can apply on Oracle’s own site; Oracle does not run, see or review your practice.

Practise Oracle questions →Or one question first · 2 min
272Known questions
14Asked in the last 6 months
167Medium
50Hard

Coding questions Oracle asks

From public company-tagged interview question lists. Most recent and most frequent first.

Easy 55Medium 167Hard 50
QuestionDifficultyAsked recently
LRU CacheMediumYes
Number of IslandsMediumYes
Two SumEasyYes
Group AnagramsMediumYes
Search in Rotated Sorted ArrayMediumYes
Binary Tree Right Side ViewMediumYes
Time Based Key-Value StoreMediumYes
Minimum Window SubstringHardYes
Merge In Between Linked ListsMediumYes
Diagonal TraverseMediumYes
Maximal SquareMediumYes
Open the LockMediumYes
Two Sum II - Input Array Is SortedMediumYes
Sum Root to Leaf NumbersMediumYes
Longest Substring Without Repeating CharactersMediumNo
Top K Frequent ElementsMediumNo
Sliding Window MaximumHardNo
Merge k Sorted ListsHardNo
Valid ParenthesesEasyNo
Merge IntervalsMediumNo
Spiral MatrixMediumNo
LFU CacheHardNo
Remove All Adjacent Duplicates in String IIMediumNo
Reverse Linked ListEasyNo
Longest Palindromic SubstringMediumNo

Questions about Oracle interviews

What topics do Oracle interviews cover?

The ones that come up most are Array, String, Hash Table, Dynamic Programming, Two Pointers.

What coding questions does Oracle ask?

272 questions are tagged to Oracle in public interview lists: 55 easy, 167 medium and 50 hard. The most asked include LRU Cache, Number of Islands, Two Sum.

How do I practise a Oracle interview?

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