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Binary Tree Level Order Traversal

Understand how to implement level order traversal on binary trees by visiting nodes level by level. This lesson helps you solve problems requiring breadth-first search, organizing node values into a formatted string, and handling edge cases such as empty trees.

Statement

Given the root of a binary tree, display the values of its nodes while performing a level order traversal. Return the node values for all levels in a string separated by the character :. If the ...