The preorder traversal of the following tree is: b. d f

True or False: Any node in a tree can be viewed as being the root of its own tree.

Which statement best represents the action taken when removing an element from a binary search tree that has a single child? A) replacing it with its only child B) comparing the element with the root node C simply deleting it replacing it with a duplicate parent element

In the binary search tree, write a function that takes in a root, p, and checks whether the tree rooted in p is a binary search tree or not. What is the time complexity of your function? def is_bst(self, p: Node):

Write a struct that defines a binary tree node