NeetCode #458LC-1361MediumTrees
← Back to All Problems#458 · #1361 · Validate Binary Tree Nodes(验证二叉树)
📌 Problem Statement & Constraints
You have
n binary tree nodes numbered 0..n-1, given leftChild and rightChild arrays where -1 means no child. Return true if they form exactly one valid binary tree. Constraints: 1 <= n <= 10^4, leftChild.length == rightChild.length == n.🔒
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