What is the BST inorder algorithm? The inorder algorithm returns values in ascending order (sorted from smallest to the largest value). Code example final class BSTNode<Value: Comparable> { var val: Value? var left: BSTNode? var right: BSTNode? init(val: Value? = nil) { self.val = val } func inorder(_ visited: inout [Value]) -> [Value] { if self.left != nil { self.left!.inorder(&visited) } if self.val != nil { visited.append(self.val!) } if self.right !...
What is the postorder algorithm? The postorder algorithm, similar to the preorder algorithm, returns a list of values in the order they are visited. Code Example final class BSTNode<Value: Comparable> { var val: Value? var left: BSTNode? var right: BSTNode? init(val: Value? = nil) { self.val = val } func postorder(_ visited: inout [Value]) -> [Value] { if self.left != nil { self.left!.postorder(&visited) } if self.right != nil { self.right!.postorder(&visited) } if self....
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....