試題詳解

複選題
20. Based on the binary search tree obtained in Question 19, we delete 99 from the tree. Which of the following are true?
(A) The parent of 75 is the node for 46；
(B) The node for 30 has two children；
(C) The node for 70 is an internal node；
(D) The height of the resulting tree is 4. questions.