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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 1-23 of 23 matching problems in NeetCode 250.

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All topics0-1 KnapsackAlgorithm XArrayBacktrackingBellman–Ford AlgorithmBidirectional SearchBinary LiftingBinary SearchBinary Search TreeBinary TreeBit ManipulationBitmaskBorůvka's AlgorithmBoyer–Moore Majority Vote AlgorithmBracket SequencesBreadth-First SearchBrute-Force SearchBubble Sort

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StatusTitleDifficulty
94. Binary Tree Inorder TraversalOpen sourceEasy
98. Validate Binary Search TreeOpen sourceMedium
100. Same TreeOpen sourceEasy
102. Binary Tree Level Order TraversalOpen sourceMedium
104. Maximum Depth of Binary TreeOpen sourceEasy
105. Construct Binary Tree from Preorder and Inorder TraversalOpen sourceMedium
110. Balanced Binary TreeOpen sourceEasy
124. Binary Tree Maximum Path SumOpen sourceHard
144. Binary Tree Preorder TraversalOpen sourceEasy
145. Binary Tree Postorder TraversalOpen sourceEasy
199. Binary Tree Right Side ViewOpen sourceMedium
226. Invert Binary TreeOpen sourceEasy
230. Kth Smallest Element in a BSTOpen sourceMedium
235. Lowest Common Ancestor of a Binary Search TreeOpen sourceMedium
297. Serialize and Deserialize Binary TreeOpen sourceHard
337. House Robber IIIOpen sourceMedium
450. Delete Node in a BSTOpen sourceMedium
543. Diameter of Binary TreeOpen sourceEasy
572. Subtree of Another TreeOpen sourceEasy
701. Insert into a Binary Search TreeOpen sourceMedium
703. Kth Largest Element in a StreamOpen sourceEasy
1325. Delete Leaves With a Given ValueOpen sourceMedium
1448. Count Good Nodes in Binary TreeOpen sourceMedium