Ace the Rust Interview

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intermediate · order 107

Invert a binary tree

tree-invert-01Related book chapters: 19 (optional — this page is complete on its own)treeinvert

Slug: tree-invert-01 · Paired reading: Chapter 19

Prompt

Using Option<Box<TreeNode>>, implement fn invert(root: Tree) -> Tree that swaps every left/right child. Prefer mem::swap or consuming map+take.