Solution: Binary Tree Zigzag Level Order Traversal
Explore how to implement zigzag level order traversal of a binary tree using a deque for efficient left-to-right and right-to-left processing. Understand how to alternate traversal directions at each level and manage nodes to achieve the zigzag pattern with optimal time and space complexity.
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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:
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The number of nodes in the tree is in the range to .
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