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Construct binary tree from an ancestor matrixMedium
Convert binary tree to its Sum treeMedium
Convert Heap ordered Linked List to Binary TreeMedium
Delete a binary tree completelyMedium
Diameter Of a N-Ary TreeMediumfacebook google
Distance between two nodes in binary treeMediumamazon
Find distance from root to given node in binary treeMedium
Find path from root to given node in a binary treeMedium
Flatten Binary Search Tree to Circular Doubly Linked ListMedium
Flatten Binary tree to double linked list in-placeMedium
Implement queue using resizing arrayEasy
Improve search in BST with sentinelMedium
Inorder predecessor and successor of a node in binary search treeMedium
Is Graph BipartiteMediumamazon dropbox ebay facebook google linkedin liveramp microsoft uber
Minimize Malware SpreadHardamazon bloomberg dropbox google
Minimum Length Root to Leaf Binary Tree Path for Given SumMedium
Minimum Length Root to Leaf BST Path for Given SumMedium
Minimum Number Of Platforms For Train StationMedium
Optimal binary search tree construction for minimum search costMedium
Partition Array for Maximum Sum ProblemMediumfacebook
Range Max QueryMedium
Range ModuleHardamazon coupang google linkedin machine-zone oracle
Rectangle OverlapEasyadobe amazon apple bloomberg goldman-sachs google mathworks microsoft oracle
Remove BoxesHardapple tencent
Reverse PairsHardamazon bytedance google microsoft uber
Robot Room CleanerHardamazon facebook google microsoft
Shortest Unique PrefixMediumgoogle square
Subarray Product Less Than KMediumakuna-capital atlassian coursera expedia google yatra
Target SumMediumfacebook google microsoft
The Maze 1 - Can the Ball Stop at DestinationMediumamazon apple facebook google microsoft twitter uber
The Maze 2 - Shortest DistanceMediumamazon facebook google netease oracle
The Maze 3 - Shortest Instructions to Reach the HoleHardgoogle
Transformations Between Binary Tree Structuctures and Linked Lists
Binary Tree Path - All root to leaf pathsEasyadobe amazon apple facebook google microsoft
Closest Binary Search Tree ValueEasyamazon bloomberg facebook google linkedin microsoft snapchat
Closest Binary Search Tree Value IIHardamazon facebook forusall google linkedin
Count distinct binary trees for a given number of nodesMedium
Employee Free TimeHardairbnb amazon bloomberg coupang doordash facebook google intuit microsoft pinterest postmates uber wayfair
Maximum CPU Load For Running TasksMedium
Replace the Substring for Balanced StringMediumaccolite
Validate Binary Tree NodesMediumfacebook
Find Champion IIMedium
Sliding PuzzleHardairbnb amazon facebook google microsoft uber
Maximum Matrix SumMedium
Implement circular stackMedium
Rotating the BoxMedium
Flip Columns For Maximum Number of Equal RowsMedium
Count Unguarded Cells in the GridMedium
Take K of Each Character From Left and RightMedium
Maximum Sum of Distinct Subarrays With Length KMedium