Function inorder

publication/code/chapter08/avl.rs:421–430

(avl: &AvlTree<T>)

}

fn inorder<T: Clone + Ord + Debug>(avl: &AvlTree<T>) {
    match avl {
        Null => (),
        Tree(node) => {
            inorder(&node.left);
            println!("key: {:?}", node.key);
            inorder(&node.right);
        },
    }
}

fn postorder<T: Clone + Ord + Debug>(avl: &AvlTree<T>) {
    match avl {