DSA - Binary Search Tree - Traverse - Preorder
What is tree traversal? Tree traversal, also known as “tree search” or “walking the tree,” is the process of visiting each node in a tree data structure exactly once. What is the BST preorder algorithm? The preorder algorithm returns a list of values in the order they are visited. It makes a copy that preserves the structure and recursively traverses the BST. Code example func preorder(_ visited: inout [Value]) -> [Value] { if self....