Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 21.2, Problem 21.2.5CP
Program Plan Intro
Set:
Set is a data structure that is used for storing and processing non duplicate elements. It is an interface which extends collection and it is an unordered collection of objects.
Set is implemented by LinkedSet, HashSet or a TreeSet.
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2. What should the parameter type be in each of the following methods? setData() --> setLeft() --> setRight() -->
3. What would need to be added/removed/changed to make this class work for a more general tree such that each node could have more than 2 nodes? EXERCISE 2
4. What is the base case of the size() method? What are the recursive cases?
5. What is the main difference between the 3 methods: inorder(), preorder(), and postorder()?
6. In the recFormatTree() method, what is the space parameter used for? What is the default value when this method is first called? What is being concatenated to this space value in the recursive calls? Does this make sense for how the tree is being displayed? EXERCISE 3
7. How can you tell if a given node is a leaf node?
Create a lazy elimination deletion function for the AVLTree class.There are several approaches you can take, but one of the simplest is to add a Boolean property to the Node class that indicates whether or not the node is designated for deletion. This variable must then be considered by your other techniques.
What are the similarities and differences between a -HashSet and an ArrayList? Use the descriptions of Set, HashSet, List, and -ArrayList in the library documentation to find out, because HashSet is a -special case of a Set, and ArrayList is a special case of a List
Chapter 21 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 21.2 - Prob. 21.2.1CPCh. 21.2 - Prob. 21.2.2CPCh. 21.2 - Prob. 21.2.3CPCh. 21.2 - Prob. 21.2.4CPCh. 21.2 - Prob. 21.2.5CPCh. 21.2 - Suppose set1 is a set that contains the strings...Ch. 21.2 - Prob. 21.2.7CPCh. 21.2 - Prob. 21.2.8CPCh. 21.2 - What will the output be if lines 67 in Listing...Ch. 21.2 - Prob. 21.2.10CP
Ch. 21.3 - Prob. 21.3.1CPCh. 21.3 - Suppose you need to write a program that stores...Ch. 21.3 - Suppose you need to write a program that stores...Ch. 21.3 - Suppose you need to write a program that stores a...Ch. 21.3 - Prob. 21.3.5CPCh. 21.3 - Prob. 21.3.6CPCh. 21.4 - Prob. 21.4.1CPCh. 21.4 - Prob. 21.4.2CPCh. 21.5 - Prob. 21.5.1CPCh. 21.5 - Prob. 21.5.2CPCh. 21.5 - Prob. 21.5.3CPCh. 21.6 - Prob. 21.6.1CPCh. 21.6 - Prob. 21.6.2CPCh. 21.6 - Prob. 21.6.3CPCh. 21.6 - Prob. 21.6.4CPCh. 21.7 - Prob. 21.7.1CPCh. 21.7 - Prob. 21.7.2CPCh. 21 - Prob. 21.1PECh. 21 - (Display nonduplicate words in ascending order)...Ch. 21 - Prob. 21.3PECh. 21 - (Count consonants and vowels) Write a program that...Ch. 21 - Prob. 21.6PECh. 21 - (Revise Listing 21.9, CountOccurrenceOfWords.java)...Ch. 21 - Prob. 21.8PECh. 21 - Prob. 21.9PE
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- There seems to be a lot of code needed to maintain the node count field in Node. Is it actually required? Why not use a single instance variable to build the size() client function that holds the total number of nodes in the tree?arrow_forwardThere seems to be a lot of code needed to maintain the node count field in Node. Is it truly required? Why not use a single instance variable to build the size() client function that holds the total number of nodes in the tree?arrow_forwardYou may find a doubly-linked list implementation below. Our first class is Node which we can make a new node with a given element. Its constructor also includes previous node reference prev and next node reference next. We have another class called DoublyLinkedList which has start_node attribute in its constructor as well as the methods such as: 1. insert_to_empty_list() 2. insert_to_end() 3. insert_at_index() Hints: Make a node object for the new element. Check if the index >= 0.If index is 0, make new node as head; else, make a temp node and iterate to the node previous to the index.If the previous node is not null, adjust the prev and next references. Print a message when the previous node is null. 4. delete_at_start() 5. delete_at_end() . 6. display() the task is to implement these 3 methods: insert_at_index(), delete_at_end(), display(). hint on how to start thee code # Initialize the Node class Node: def __init__(self, data): self.item = data…arrow_forward
- For the AVLTree class, create a deletion function that makes use of lazy deletion.There are a number of methods you can employ, but one that is straightforward is to merely include a Boolean field in the Node class that indicates whether or not the node is designated for elimination. Then, your other approaches must take into consideration this field.arrow_forwardFor both ArrayList and LinkedList, which methods do not exist in the List interface? Just why do you think these methods are left out the List?arrow_forwardYou've just finished training a random forest for spam classification, and it is getting abnormally bad performance on your validation set, but good performance on your training set. Your implementation has no bugs. What could be causing the problem? Your decision trees are too deep You are randomly sampling too many features when you choose a split You have too few trees in your ensemble Your bagging implementation is randomly sampling sample points without replacementarrow_forward
- Write a deletion method for the AVLTree class that utilizes lazy deletion.There are several techniques you can use, but a simple one is to simplyadd a Boolean field to the Node class that signifies whether or not the nodeis marked for deletion. Your other methods must then take this field intoaccount.arrow_forwardIs it possible to implement a sorted linked list using a DLL? What is the advantage of using a DLL versus a single linked list? Back up your point with a real example or application.arrow_forwardTo finish up the definition of the Node class, we need at least two constructor methods. We definitely want a default constructor that creates an emptyNode, with both the Element and Link members set to null. We also need aparameterized constructor that assigns data to the Element member and setsthe Link member to null.Write the code for the Node class:arrow_forward
- Looking at all four list implementations, which actions/methods tend to be less efficient in the Linked List implementation compared to the Array Implementation? Explain why for each action/method you specify.arrow_forwardDesign and implement an insertSorted() method for the MyArrayList class. The method should receive a single object and insert it in its correct position. You can assume that the calling array is already in a sorted order. The calling array is therefore updated. Follow the three step method for designing the method. Develop the java code for the method. Create a test program to test the method thoroughly using the Integer wrapper class.arrow_forwardIN JAVA Write and explain the addIterator method from the doubly-linked list class. Be sure to handle precondition(s), edge case(s) and general case.arrow_forward
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