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31 problems total

Array (174)Sorting (45)Depth First Search (44)Tree (41)Breadth First Search (35)Linked List (28)Stack (27)Recursion (18)Graph Theory (12)Monotonic Stack (8)Queue (6)Shortest Path (2)

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Title	Difficulty	Videos	Companies
Binary Tree Inorder Traversal	easy	-	alibaba amazon apple
Unique BSTs 1 - Count	medium	-	adobe amazon apple
Validate Binary Search Tree	medium		adobe amazon apple
Binary Tree Level Order Traversal - Level by Level	medium		adobe amazon apple
Binary Tree Traversal - Zigzag Level Order Traversal	medium	-	amazon apple bloomberg
Maximum Depth of Binary Tree	easy		adobe amazon apple
Construct Binary Tree from Inorder and Postorder Traversal	medium	-	amazon bloomberg facebook
Binary Tree Traversal - Level Order Bottom up	medium	-	adobe amazon apple
Convert Sorted List into a height-balanced Binary search Tree	medium	-	amazon bloomberg facebook
Balanced Binary Tree	easy	-	adobe amazon apple
Binary Tree Postorder Traversal	easy	-	adobe amazon facebook
Binary Search Tree BST Inorder Iterator	medium	-	alibaba amazon apple
Lowest Common Ancestor of a Binary Search Tree	medium		adobe amazon bloomberg
Lowest Common Ancestor of a Binary Tree	medium		adobe airbnb amazon
Inorder Successor in Binary Search Tree	medium	-	amazon bloomberg citadel
Serialize and Deserialize Binary Tree	hard		amazon apple bloomberg
Binary Tree Traversal - Vertical Order Traversal	medium	-	adobe amazon bloomberg
House Robber 3 - Houses in Binary Tree	medium	-	amazon facebook google
Path Sum 3 - Count paths from parent to child	medium	-	amazon bloomberg facebook
Serialize and Deserialize Binary Search Tree BST	medium	-	amazon bytedance ebay
Delete in a Binary Search Tree	medium	-	amazon apple bloomberg
Diameter Of a Binary Tree	easy	-	adobe amazon apple
Subtree of Another Tree	easy		amazon bloomberg ebay
Two Sum 4 - Input is Binary Search Tree	easy	-	amazon facebook google
All Nodes Distance K in Binary Tree	medium	-	amazon apple bloomberg
Vertical Order Traversal of a Binary Tree	hard	-	adobe amazon bloomberg
Cousins in Binary Tree	easy	-	adobe amazon bloomberg
Maximum Level Sum of a Binary Tree	medium	-	amazon google
Balance a Binary Search Tree	medium		amazon
Clone N-ary Tree	medium	-	amazon
Distance between two nodes in binary tree	medium	-	amazon

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