PrepCode

Binary Tree

168 problems

Algorithms pattern questions across top companies

Recommended Study Guide: Iterative & Recursive Tree Traversals (In, Pre, Post, LevelOrder & Views)

The definitive reference for all binary tree traversals, including stack-based iterative post-order, Morris traversal O(1) space, and boundary views.

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Showing 168 questions
#96Unique Binary Search TreesMediummathWalkCCCAmazonBloombergClari
#104Maximum Depth of Binary TreeEasytreeNeetCodeAccentureAmazonApple
#109Convert Sorted List to Binary Search TreeMediumlinked listWalkCCCAmazonAppleBloomberg
#124Binary Tree Maximum Path SumHarddynamic programmingNeetCodeAdobeAmazonApple
#222Count Complete Tree NodesMediumbinary searchWalkCCCAdobeAmazonBloomberg
#236Lowest Common Ancestor of a Binary TreeMediumtreeNeetCodeAdobeAirwallexAmazon
#255Verify Preorder Sequence in Binary Search TreeMediumarrayWalkCCCExpediaSalesforceZenefits
#285Inorder Successor in BSTMediumtreeWalkCCCGoogleMetaMicrosoft
#297Serialize and Deserialize Binary TreeHardstringNeetCodeAmazonAppleAtlassian
#449Serialize and Deserialize BSTMediumstringWalkCCCAmazonGoogleMicrosoft
#666Path Sum IVMediumarrayWalkCCCAlibaba
#687Longest Univalue PathMediumtreeWalkCCCAmazonGoogleSnowflake
#814Binary Tree PruningMediumtreeWalkCCCAmazonGoogleHulu
#863All Nodes Distance K in Binary TreeMediumhash tableNeetCodeAmazonAppleBloomberg
#968Binary Tree CamerasHarddynamic programmingWalkCCCAmazonBloombergDE Shaw
#1028Recover a Tree From Preorder TraversalHardstringWalkCCCAmazonBloombergGoogle
#1302Deepest Leaves SumMediumtreeWalkCCCGoogleMyntraTikTok
#1367Linked List in Binary TreeMediumlinked listWalkCCCSoundHound
#2005Subtree Removal Game with Fibonacci TreeHardmathWalkCCCSony
#2196Create Binary Tree From DescriptionsMediumarrayWalkCCCAmazonBloombergClari
#2385Amount of Time for Binary Tree to Be InfectedMediumhash tableWalkCCCAdobeAmazonBloomberg
#2471Minimum Number of Operations to Sort a Binary Tree by LevelMediumtreeWalkCCCAmazonGoogleGuidewire
#563Binary Tree TiltEasytreeWalkCCCAmazonIndeedMeta
#965Univalued Binary TreeEasytreeWalkCCCAmazonBoxGoogle
#2509Cycle Length Queries in a TreeHardarrayWalkCCCArcesium
#776Split BSTMediumtreeWalkCCCAmazonCoupangGoogle
#235Lowest Common Ancestor of a Binary Search TreeMediumtreeNeetCodeAmazonAtlassianBlackRock
#314Binary Tree Vertical Order TraversalMediumhash tableWalkCCCAmazonAndurilApple
#987Vertical Order Traversal of a Binary TreeHardhash tableWalkCCCAmazonBloombergDoorDash
#543Diameter of Binary TreeEasytreeNeetCodeAmazonAppleBloomberg
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