PrepCode

Tree

237 problems

Algorithms pattern questions across top companies

Recommended Study Guide: Selected LeetCode Questions on Trees by Pattern

A high-yield curated list of tree problems: LCA (Lowest Common Ancestor), Path Sum variants, Tree Serialization, and Binary Search Tree properties.

Read Guide All Guides
Timeframe:
Showing 237 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
#341Flatten Nested List IteratorMediumstackWalkCCCAdobeAmazonApple
#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
#1993Operations on TreeMediumarrayWalkCCCAmazonGoogleJuspay
#2005Subtree Removal Game with Fibonacci TreeHardmathWalkCCCSony
#2196Create Binary Tree From DescriptionsMediumarrayWalkCCCAmazonBloombergClari
#2368Reachable Nodes With RestrictionsMediumarrayWalkCCCGoogleMakeMyTrip
#2385Amount of Time for Binary Tree to Be InfectedMediumhash tableWalkCCCAdobeAmazonBloomberg
#2440Create Components With Same ValueHardarrayWalkCCCSprinklr
#2471Minimum Number of Operations to Sort a Binary Tree by LevelMediumtreeWalkCCCAmazonGoogleGuidewire
#2479Maximum XOR of Two Non-Overlapping SubtreesHardtreeWalkCCCDirectiMedia.net
#2538Difference Between Maximum and Minimum Price SumHardarrayWalkCCCDirectiMedia.net
#2603Collect Coins in a TreeHardarrayWalkCCCAmazonCiscoGoogle
#2791Count Paths That Can Form a Palindrome in a TreeHardhash tableWalkCCCGoldman SachsGoogleMicrosoft
Page 1 of 8