
Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
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Question
Chapter 12, Problem 12PP
Program Plan Intro
Implementation of queue using circular linked list
Program Plan:
Filename: “CircularLinkedQueue.java”
- Define “CircularLinkedQueue” class.
- Declare variable for reference of first node, rear node and number of items.
- Default constructor for “CircularLinkedQueue” class.
- Set front and rear to “null” and count to “0”.
- Define the method “addToQueue()” with argument of “item”.
- If “front” is not equal to “null”, then
- Create a new node using “QueueNode” class.
- Set the new node as next to rear.
- Set the new node as rear.
- Set the new node at last.
- If the queue is empty, then
-
- Assign the next node to “null” by using “QueueNode” class.
- Set rear to front for single node in queue.
- Make the front as next to rear
- Increment the number of items.
- If “front” is not equal to “null”, then
- Define the method “removeFromQueue()”.
- If the queue is not empty, then get the element at front node by calling “getQueueElement()” method and eliminate the front node.
- Update the front and decrement the number of items.
- Finally returns the resultant element.
- If the queue is empty, then returns null.
- If the queue is not empty, then get the element at front node by calling “getQueueElement()” method and eliminate the front node.
- Define the method “isEmpty()”.
- This method returns “true” if the value of “count” is equal to “0”. Otherwise, returns “false”.
- Define the method “displayQueueValues()”.
- Declare a variable for node position.
- Create a reference to front.
- Performs “while” loop. This loop will repeat to display all elements in queue.
- Display the element of the queue.
- Go to the next node by using “getNextNode()” method.
Filename: “QueueNode.java”
- Define “QueueNode” class.
- Declare required variables for queue elements and next node value.
- Create default constructor for “QueueNode” class.
- Assign “null” values for queue elements and next node.
- Create the parametrized constructor for “QueueNode” class.
- Define the method “setNextNode()” which is used to set value for next node.
- Define the method “getNextNode()” which is used to returns the next node value.
- Define the method “setQueueElement()” which is used to assign value for queue elements.
- Define the method “getQueueElement()” which is used to returns queue elements.
Filename: “CircularLinkedQueueTest.java”
- Define “CircularLinkedQueueTest” class.
- Define main function.
- Create an object “nameQueue” for “CircularLinkedQueueTest” class.
- Add names to object “nameQueue” by using “addToQueue()” method.
- Call the method “displayQueueValues()” to display the elements in queue.
- Remove an element from the queue by calling the method “removeFromQueue()”.
- Display the result of whether the queue is empty or not by calling the method “isEmpty()”.
- Display the elements in queue after removing an element from queue by calling the method “displayQueueValues()”.
- Remove the elements from the queue by calling the method “removeFromQueue()”.
- Display the result of whether the queue is empty or not by calling the method “isEmpty()”.
- Define main function.
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Chapter 12 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 12.1 - Suppose aList is an object of the class...Ch. 12.1 - Prob. 2STQCh. 12.1 - Prob. 3STQCh. 12.1 - Prob. 4STQCh. 12.1 - Can you use the method add to insert an element at...Ch. 12.1 - Prob. 6STQCh. 12.1 - Prob. 7STQCh. 12.1 - If you create a list using the statement...Ch. 12.1 - Prob. 9STQCh. 12.1 - Prob. 11STQ
Ch. 12.1 - Prob. 12STQCh. 12.2 - Prob. 13STQCh. 12.2 - Prob. 14STQCh. 12.2 - Prob. 15STQCh. 12.2 - Prob. 16STQCh. 12.3 - Prob. 17STQCh. 12.3 - Prob. 18STQCh. 12.3 - Prob. 19STQCh. 12.3 - Write a definition of a method isEmpty for the...Ch. 12.3 - Prob. 21STQCh. 12.3 - Prob. 22STQCh. 12.3 - Prob. 23STQCh. 12.3 - Prob. 24STQCh. 12.3 - Redefine the method getDataAtCurrent in...Ch. 12.3 - Repeat Question 25 for the method...Ch. 12.3 - Repeat Question 25 for the method...Ch. 12.3 - Repeat Question 25 for the method...Ch. 12.4 - Revise the definition of the class ListNode in...Ch. 12.4 - Prob. 30STQCh. 12.5 - What is the purpose of the FXML file?Ch. 12.5 - Prob. 32STQCh. 12 - Repeat Exercise 2 in Chapter 7, but use an...Ch. 12 - Prob. 2ECh. 12 - Prob. 3ECh. 12 - Repeat Exercises 6 and 7 in Chapter 7, but use an...Ch. 12 - Write a static method removeDuplicates...Ch. 12 - Write a static method...Ch. 12 - Write a program that will read sentences from a...Ch. 12 - Repeat Exercise 12 in Chapter 7, but use an...Ch. 12 - Write a program that will read a text file that...Ch. 12 - Revise the class StringLinkedList in Listing 12.5...Ch. 12 - Prob. 12ECh. 12 - Write some code that will use an iterator to...Ch. 12 - Prob. 14ECh. 12 - Write some code that will use an iterator to...Ch. 12 - Prob. 17ECh. 12 - Revise the method selectionSort within the class...Ch. 12 - Repeat the previous practice program, but instead...Ch. 12 - Repeat Practice Program 1, but instead write a...Ch. 12 - Write a program that allows the user to enter an...Ch. 12 - Write a program that uses a HashMap to compute a...Ch. 12 - Write a program that creates Pet objects from data...Ch. 12 - Repeat the previous programming project, but sort...Ch. 12 - Repeat the previous programming project, but read...Ch. 12 - Prob. 9PPCh. 12 - Prob. 10PPCh. 12 - Prob. 11PPCh. 12 - Prob. 12PPCh. 12 - Prob. 13PPCh. 12 - Prob. 14PPCh. 12 - Prob. 15PP
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