Most Popular Easy Binary Tree Question in Big Tech Companies
LeetCode 543. Diameter of Binary Tree
Given the root of a binary tree, return the length of the diameter of the tree.
The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root.
The length of a path between two nodes is represented by the number of edges between them.
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Time Complexity = O(n), where 'n' is the number of nodes
Space Complexity = O(h), where 'h' is the height of the tree
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