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Solution: Binary Tree Zigzag Level Order Traversal

Explore the method to traverse a binary tree in zigzag level order using a breadth-first search approach. Learn how to efficiently alternate traversal directions with a deque, process nodes level by level, and understand the time and space complexity of this pattern.

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 ...