Welcome to my Medium clone!

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Here is the code to invert a binary tree:

class Solution:
    def invertTree(self, root: TreeNode) -> TreeNode:
        if not root:
            return None

        # swap the children
        tmp = root.left
        root.left = root.right
        root.right = tmp

        self.invertTree(root.left)
        self.invertTree(root.right)
        return root

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Here is a picture:

This was made using Next.js, Redux, Firebase and Tailwind CSS! Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.