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Solution: Univalued Binary Tree

Explore how to verify a univalued binary tree by applying depth-first search. Learn to compare node values recursively and identify when a tree contains the same value throughout. This lesson helps you master the solution approach, analyze time and space complexity, and implement an efficient DFS-based check.

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Statement

A binary tree is considered uni-valued if every node in the tree contains the same value.

Given the root of a binary tree, return TRUE if the tree is uni-valued, or FALSE otherwise.

Constraints:

  • The number of nodes in the tree is in the range [1,100][1, 100].

  • 0≤0 \leq ...