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Grokking the Coding Interview Patterns in JavaScript

Solution: Symmetric Tree

Explore how to verify whether a binary tree is symmetric around its root by using breadth-first search. Learn the iterative algorithm with a queue to compare left and right subtrees, and understand the time and space complexities involved to solve this coding interview pattern effectively.

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Statement

Given the root of a binary tree, check whether it is a symmetric tree. A symmetric tree refers to a tree that is the mirror of itself, i.e., symmetric around its root.

Constraints:

  • The tree contains nodes in the range [1,500][1, 500]
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