In-Order Traversal in Haskell and Rust — Monday Morning Haskell

Demonstrates implementing in-order traversal for finding the k-th smallest element in a binary search tree using both Haskell and Rust. The algorithm uses a stack-based approach to traverse nodes from smallest to largest value, handling the complexities of Rust's RefCell and Rc wrappers for memory management while showing cleaner recursive patterns in Haskell.