Diameter of Binary Tree
Easy
Trees
•
Grind 75NeetCode 150
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 path between two nodes is represented by the number of edges between them.

Constraints:

  • The number of nodes in the tree is in the range [1, 104]
  • -100 <= Node.val <= 100