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Solution: Diameter of Binary Tree

Explore how to calculate the diameter of a binary tree, the longest path between two nodes, by applying depth-first search techniques. Understand both naive and optimized solutions, analyze time and space complexities, and learn how to implement an efficient recursive approach to solve diameter problems in binary trees.

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Statement

Given a binary tree, you need to compute the length of the tree’s diameter. 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.

Note: The length of the 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 [1,500][1, 500].
  • −100≤-100 \leq Node.value ≤100\leq 100
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