Solution: Binary Tree Zigzag Level Order Traversal
Understand how to implement a binary tree zigzag level order traversal using a deque that alternates direction at each level. Explore step-by-step how nodes are processed left to right and right to left, ensuring efficient traversal and storage of node values by level.
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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 ...