It is easy to see why a binary search tree is preferable to other data structures, such as a linked list or an array, since its benefits are more obvious?

1. Imagine there are 50 nodes in a queue and the head and the tail are pointing to the one and the same node. What is this type of queue called? 2. Can a binary search algorithm be written by recursion?

In Java,What is the maximum number of comparisons that a binary search function will make when searching for a value in a 2000-elements array?  why?What is the difference between a binary tree and a binary search tree?

C++ You are given the root node of a binary search tree (BST) and a value to insert into the tree. Return the root node of the BST after the insertion. It is guaranteed that the new value does not exist in the original BST.   Example 1: diagram for example 1 attached   Input: root = [4,2,7,1,3], val = 5 Output: [4,2,7,1,3,5] Explanation: Another accepted tree is: Example 2: Input: root = [40,20,60,10,30,50,70], val = 25 Output: [40,20,60,10,30,50,70,null,null,25] Example 3: Input: root = [4,2,7,1,3,null,null,null,null,null,null], val = 5 Output: [4,2,7,1,3,5]   Constraints: The number of nodes in the tree will be in the range [0, 104]. -108 <= Node.val <= 108 All the values Node.val are unique. -108 <= val <= 108 It's guaranteed that val does not exist in the original BST.