2. Write a method that takes any two nodes u and v in a tree T, and quickly determines if the node u in the tree is a descendant or ancestor of node v

} 20. In a binary search tree, the immediate predecessor of a given node is the largest node in its left subtree. For example, the immediate predecessor of node 25 in the following tree is 23 while it is 15 for node 16. Nodes 21 and 39 do not have an immediate predecessor because none of them has a left child. 25 / 1 Write a non-recursive method immediate Predecessor, which takes a BSTNode parameter node (a reference to a node in a binary search tree) and returns a reference to its immediate predecessor in the tree. If node is null or it does not have an immediate predecessor, the method returns null. public class BSTNode 4 { private int m_info; private BSTNode m_left; private BSTNode m_right; public int getInfo() {return m_info; } public void setInfo (int value) {m_info = info; } public BSTNode getLeft () {return m_left; } public void setLeft (BSTNode left) (m_left = left; } public BSTNode getRight () {return m_right;} public void setRight (BSTNode right) {m_right = right;} } public…

7 4 2 4 2 Tree #1 1 5 Tree #2 6 3 6 8 8 9 5 7 9 1 For parts a through g, implement the given method and demonstrate the method working with the two trees provided earlier. All code implemented in this assignment should be in a class called Homework 6. You may use the data structures and algorithm code from the lecture notes. Hint: Consider using recursion. To do so implement a private helper method that takes a Node and then recursively calls itself to traverse the tree. The public method would call the private method passing the tree's root as the Node.