Connect All Siblings of a Binary Tree

Explore how to connect every node in a perfect binary tree to its immediate right sibling using the next pointer. This lesson helps you learn and implement an efficient breadth-first traversal strategy that runs in linear time and constant space, enhancing your tree traversal skills for coding interviews.

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Given the root of a perfect binary treeA binary tree in which all the levels are completely filled with nodes, and all leaf nodes (nodes with no children) are at the same level., where each node is equipped with an additional pointer, next, connect all nodes from left to right. Do so in such a way that the next pointer of each node points to its immediate right sibling except for the rightmost node, which points to the first node of the next level.

The next pointer of the last node of the binary tree (i.e., the rightmost node of the last level) should be set to NULL.

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