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Solution: Invert Binary Tree

Understand how to invert a binary tree by performing a post-order depth-first search traversal, swapping each node's left and right children to create a mirror image. This lesson explains the algorithm, its time and space complexity, and provides a step-by-step code example.

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Statement

Given the root node of a binary tree, transform the tree by swapping each node’s left and right subtrees, thus creating a mirror image of the original tree. Return the root of the transformed tree.

Constraints:

  • 0≤0\leq Number of nodes in the tree ≤100\leq 100
  • −1000≤
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