Oracle — DSA Interview Questions

35 problems with animated explanations & C# solutions. (~191 common interview questions)

Step through algorithms visually, then solve with stdin/stdout auto-judge.

Medium Palindrome Partitioning
Animate
Medium Surrounded Regions
Animate
Medium Graph Valid Tree
Animate
Medium Cheapest Flights Within K Stops
Animate
Medium Decode Ways
Animate
Medium Longest Common Subsequence
Animate
Hard Edit Distance
Animate
Medium Hand of Straights
Animate
Easy Meeting Rooms
Animate
Easy Plus One
Animate
Easy Reverse Bits
Animate
Medium Group Anagrams
Animate
Medium Two Sum II - Input Array Is Sorted
Animate
Medium Permutation in String
Animate
Medium Daily Temperatures
Animate
Medium Search in Rotated Sorted Array
Animate
Medium Copy List with Random Pointer
Animate
Easy Invert Binary Tree
Animate
Medium Binary Tree Level Order Traversal
Animate
Hard Serialize and Deserialize Binary Tree
Animate
Medium Kth Largest Element in an Array
Animate
Medium Subsets II
Animate
Medium Clone Graph
Animate
Medium Course Schedule II
Animate
Medium Network Delay Time
Animate
Medium House Robber II
Animate
Medium Longest Increasing Subsequence
Animate
Medium Interleaving String
Animate
Medium Jump Game
Animate
Medium Insert Interval
Animate
Medium Spiral Matrix
Animate
Easy Single Number
Animate
Easy Contains Duplicate
Animate
Medium Encode and Decode Strings
Animate
Easy Best Time to Buy and Sell Stock
Animate All companies
Toolliyo Assistant
Ask about tutorials, ebooks, training, pricing, mentor services, and support. I use public site content only—not admin or internal tools.

care@toolliyo.com

Need callback? Share your details