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Solution: Binary Tree Zigzag Level Order Traversal

Explore how to perform zigzag level order traversal on a binary tree using breadth-first search and a deque. Learn to alternate traversal directions at each level and manage node processing efficiently with a simple algorithm.

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Statement

Given a binary tree, return its zigzag level order traversal. The zigzag level order traversal corresponds to traversing nodes from left to right for one level, right to left for the next level, and so on, reversing the direction after every level.

Constraints:

  • The number of nodes in the tree is in the range 00 to 500500 ...