Invert Binary Tree · Coding Interview Practice

Invert Binary TreeGiven the root of a binary tree, invert the tree (mirror it) and return its root.Constraints

The number of nodes is in the range [0, 100]

-100 <= Node.val <= 100

Examples

Input: root = [4,2,7,1,3,6,9] Output: [4,7,2,9,6,3,1]

Input: root = [2,1,3] Output: [2,3,1]

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