How to Solve Sum of Nodes with Even- Valued Grandparent Problem
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Sum of Nodes with Even-Valued Grandparent
Given the root of a binary tree, return the sum of values of nodes with an even-valued grandparent. If there are no nodes with an even-valued grandparent, return 0. A grandparent of a node is the pare...
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Understanding the Sum of Nodes with Even- Valued Grandparent Problem
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Problem Statement
Given the root of a binary tree, return the sum of values of nodes with an even-valued grandparent. If there are no nodes with an even-valued grandparent, return 0. A grandparent of a node is the parent of its parent if it exists.
Sum of Nodes with Even-Valued Grandparent
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Examples
root = [6,7,8,2,7,1,3,9,null,1,4,null,null,null,5]18The red nodes are the nodes with even-value grandparent while the blue nodes are the even-value grandparents.
root = [1]0Constraints
The number of nodes in the tree is in the range [1, 104].1 <= Node.val <= 100How Interview Coder Helps with Leetcode Problems
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