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Problem Library

Master these coding challenges to ace your next technical interview. Handpicked problems with personalized spaced repetition.

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All tracksBlind 75NeetCode 150NeetCode 250Striver A to ZSDE Sheet

Showing 1-7 of 7 matching problems in SDE Sheet.

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All topics0-1 KnapsackArrayBacktrackingBinary SearchBinary Search TreeBinary TreeBoyer–Moore Majority Vote AlgorithmBreadth-First SearchBrute-Force SearchBucket SortCombinatoricsComplete KnapsackCountingDepth-First SearchDirected Acyclic GraphDivide and ConquerDP on TreesDynamic Programming

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StatusTitleDifficulty
98. Validate Binary Search TreeOpen sourceMedium
102. Binary Tree Level Order TraversalOpen sourceMedium
104. Maximum Depth of Binary TreeOpen sourceEasy
110. Balanced Binary TreeOpen sourceEasy
199. Binary Tree Right Side ViewOpen sourceMedium
230. Kth Smallest Element in a BSTOpen sourceMedium
543. Diameter of Binary TreeOpen sourceEasy