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DIY: Populating Next Right Pointers in Each Node

Explore how to populate next right pointers in each node of a perfect binary tree. This lesson teaches you to traverse the tree and link nodes horizontally, enhancing your understanding of tree traversal techniques for coding interviews.

Problem statement

You are given a perfect binary tree where all the leaves are on the same level and every parent has two children. We have added an additional next pointer to our TreeNode implementation. ...