Solution: Binary Tree Zigzag Level Order Traversal
Explore the method to traverse a binary tree in zigzag level order by alternating left-to-right and right-to-left traversal at each level. Understand how to use a deque to manage node processing direction efficiently and implement this approach with O(n) 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 ...