Solution: Binary Tree Zigzag Level Order Traversal
Understand how to perform zigzag level order traversal on a binary tree by alternating the direction of traversal at each level. Learn to implement this using a deque to efficiently process nodes from left to right and right to left, managing traversal order and time complexity effectively.
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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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