Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 21, Problem 3AW
Program Plan Intro
Binary tree:
- Binary tree is a hierarchical structure to represent the data. The element of tree is called as a node.
- Here, the branches are used to connect the nodes.
- Each node may have zero, one, or two children.
- A node that does not have a superior node is called the root node.
- The root node is the starting node, and it is the ancestor for all other nodes in the tree.
- A node that does not have any children is called as a leaf node or an end node.
- It is used to implement binary search trees and binary heaps.
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Write a method called countLeftNodes that returns the number of left children in the tree. A left child is a node that appears as the root of the left-hand subtree of another node. For example, reference tree #1 has 3 left children (the nodes storing the values 5 , 1 , and 4 ).
Write a method that takes any two nodes u and v in a tree T whose root node is s, and quickly determines if the node u in the tree is a descendant or ancestor of node v.
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Chapter 21 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 21.1 - Prob. 21.2CPCh. 21.1 - Prob. 21.3CPCh. 21 - Prob. 1MCCh. 21 - Prob. 2MCCh. 21 - Prob. 3MCCh. 21 - Prob. 4MCCh. 21 - Prob. 5MCCh. 21 - Prob. 6MCCh. 21 - Prob. 7MCCh. 21 - Prob. 8MC
Ch. 21 - Prob. 9MCCh. 21 - Prob. 10MCCh. 21 - Prob. 11TFCh. 21 - Prob. 12TFCh. 21 - Prob. 13TFCh. 21 - Prob. 14TFCh. 21 - Prob. 15TFCh. 21 - Prob. 16TFCh. 21 - Prob. 17TFCh. 21 - Prob. 18TFCh. 21 - Prob. 19TFCh. 21 - Prob. 20TFCh. 21 - Prob. 21TFCh. 21 - Prob. 1FTECh. 21 - Prob. 2FTECh. 21 - Prob. 3FTECh. 21 - Prob. 1SACh. 21 - Prob. 2SACh. 21 - Prob. 3SACh. 21 - Prob. 4SACh. 21 - What is a priority queue?Ch. 21 - Prob. 6SACh. 21 - Prob. 7SACh. 21 - Prob. 1AWCh. 21 - Prob. 2AWCh. 21 - Prob. 3AWCh. 21 - Prob. 4AWCh. 21 - Prob. 5AWCh. 21 - Prob. 6AWCh. 21 - Prob. 7AWCh. 21 - Prob. 4PCCh. 21 - Prob. 6PC
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- Write a function, countNegativeNodes(TreeNode* p), that returns the number of nodes in a binary tree that have negative numbers as their node value. Use RECURSION.arrow_forwardWrite a routine that takes only a reference to the root of a binary tree and compute the number of nodes. example in the photo (source code)arrow_forwardWrite a static method, copy, that, given a binary tree, returns a copy ofthe tree. Because not every object implements the copy method, you should notcopy objects to which the tree refers. This is referred to as a shallow copy.arrow_forward
- Write a method printLevel() that takes a Node as argument and prints the keys in the subtree rooted at that node in level order (in order of their distance from the root, with nodes on each level in order from left to right). Hint : Use a Queue.arrow_forwardUse python only. *Print elements of all the Nodes of a tree using Post-order Traversal and *Write a method which will return a copy (new tree) of a given treearrow_forwardWrite a method isBST() that takes a Node as argument and returns true if the argument node is the root of a binary search tree, false otherwise.Hint : This task is also more difficult than it might seem, because the order in which youcall the methods in the previous three exercises is important.arrow_forward
- Write a method, isComplete, that returns true if and only if the subtreerooted at a BinaryTree on which it acts is completearrow_forwardYou are implementing a binary search tree class from scratch, which, in additionto insert, find, and delete, has a method getRandomNode() which returns a random node from the tree. All nodes should be equally likely to be chosen. Design and implement an algorithm for getRandomNode, and explain how you would implement the rest of the methodsarrow_forwardWrite a recursive method isBinaryTree() that takes a Nodeas argument and returns true if the subtree count field N is consistent in the data structure rooted at that node, false otherwise. Note : This check also ensures that the data structure has no cycles and is therefore a binary tree (!).arrow_forward
- Write the output that will be obtained when this traverse() method is called with the root of the tree given below.arrow_forwardWrite a method oddEntries that returns the number of odd integers contained in a binarytree where the element type is int. This method is called with a link to the root node ofthe tree.Note: You have to explain your method by means of inline comments or by including apseudo-code version of this method in comments.arrow_forwardWrite a recursive method isBinaryTree() that takes a Nodeas argument and returns true if the subtree count field N is consistent in the data structure rooted at that node, false otherwise. Note : This check also ensures that the datastructure has no cycles and is therefore a binary tree (!).arrow_forward
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