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Oracle DSA Interview Questions

Accelerate your enterprise tech placement preparation with the official Oracle DSA interview preparation sheet, custom-built for freshers, SDE-1, and SDE-2 aspirants. Oracle's core engineering loops place a strict premium on database scalability, robust transaction caching, and efficient relational indexing architectures. This production-grade dataset features 52 of the most frequently asked Oracle coding interview questions across mission-critical archetypes—including advanced binary tree validations, low-latency transaction cache designs, multi-pointer sorting logic, and matrix data traversals. Integrated with direct LeetCode and GeeksforGeeks links alongside real candidate popularity metrics, this tracking sheet will maximize your site's traction and organic search performance.

52 Problems
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Overall Progress

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1. Validate Binary Search Tree
LeetCode•
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Very Hot
2. LRU Cache
LeetCode•
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Very Hot
3. Merge Intervals
LeetCode•
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Hot
4. Subarray Sum Equals K
LeetCode•
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Hot
6. Coin Change
LeetCode•
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Hot
7. Maximum Subarray
LeetCode•
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Hot
9. Trapping Rain Water
LeetCode•
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Very Hot
11. Search in Rotated Sorted Array
LeetCode•
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Very Hot
12. Number of Islands
LeetCode•
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Warm
13. Valid Parentheses
LeetCode•
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Hot
15. Group Anagrams
LeetCode•
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Warm
16. Two Sum
LeetCode•
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Hot
19. Word Break
LeetCode•
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Hot
20. Decode String
LeetCode•
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Hot
22. Climbing Stairs
LeetCode•
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Hot
24. Course Schedule II
LeetCode•
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Warm
26. Subsets
LeetCode•
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Warm
27. Reverse Linked List
LeetCode•
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Hot
28. Linked List Cycle
LeetCode•
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Hot
30. House Robber
LeetCode•
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Hot
31. Next Permutation
LeetCode•
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Warm
32. Rotting Oranges
LeetCode•
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Hot
33. Top K Frequent Words
LeetCode•
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Warm
37. 3Sum
LeetCode•
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Hot
38. Spiral Matrix
LeetCode•
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Warm
40. Decode Ways
LeetCode•
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Warm
43. Gas Station
LeetCode•
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Hot
44. Word Search
LeetCode•
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Warm
47. Permutations
LeetCode•
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Warm
48. Meeting Rooms
GeeksforGeeks•
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Hot
49. Check if Subtree
LeetCode•
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Warm
50. Edit Distance
LeetCode•
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Warm
51. LFU Cache
LeetCode•
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Hot