How to Solve Validate Binary Tree Nodes Problem
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Validate Binary Tree Nodes
You have n binary tree nodes numbered from 0 to n - 1 where node i has two children leftChild[i] and rightChild[i], return true if and only if all the given nodes form exactly one valid binary tree. I...
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Understanding the Validate Binary Tree Nodes Problem
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Problem Statement
You have n binary tree nodes numbered from 0 to n - 1 where node i has two children leftChild[i] and rightChild[i], return true if and only if all the given nodes form exactly one valid binary tree. If node i has no left child then leftChild[i] will equal -1, similarly for the right child. Note that the nodes have no values and that we only use the node numbers in this problem.
Validate Binary Tree Nodes
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Examples
n = 4, leftChild = [1,-1,3,-1], rightChild = [2,-1,-1,-1]truen = 4, leftChild = [1,-1,3,-1], rightChild = [2,3,-1,-1]falsen = 2, leftChild = [1,0], rightChild = [-1,-1]falseConstraints
n == leftChild.length == rightChild.length1 <= n <= 1041 <= leftChild[i], rightChild[i] <= n - 1How Interview Coder Helps with Leetcode Problems
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