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Binary Tree Level Order Traversal

Explore how to implement binary tree level order traversal by visiting nodes level by level. This lesson teaches you to handle empty trees and output node values in sequence separated by colons. Understand the core breadth-first search approach to solve typical tree traversal problems encountered in coding interviews.

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 ...