Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 13, Problem 13.14PE
(Demonstrate the benefits of encapsulation) Rewrite the Rational class in Listing 13.13 using a new internal representation for the numerator and denominator. Create an array of two integers as follows:
private long[] r = new long[2];
Use r[0] to represent the numerator and r[1] to represent the denominator. The signatures of the methods in the Rational class are not changed, so a client application that uses the previous Rational class can continue to use this new Rational class without being recompiled.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(Implement MyLinkedList) The implementations of the methods contains(E e), get(int index), indexOf(E e), lastIndexOf(E e), and set(int index, E e) are omitted in the MyLinkedList class. Implement these methods. Define a new class named MyLinkedListExtra that extends MyLinkedListto override these methods. Test your new MyList class using the code at
import java.util.*;
public class Exercise24_02 { public static void main(String[] args) { new Exercise24_02(); }
public Exercise24_02() { String[] names = {"Tom", "Susan", "Kim", "George", "Peter", "Jean", "George", "Jane", "Denise", "Jenny", "Susan", "Kathy", "Jane"}; MyList<String> list = new MyLinkedListExtra<>(names);
System.out.println(list); Scanner input = new Scanner(System.in); System.out.print("Enter a name: "); String name = input.next(); System.out.print("Enter an index: "); int index = input.nextInt(); System.out.println(name + " is in the list? " +…
PLEASE USE PYTHON and don't make the code overly complicated and lengthy. Thanks. (Second time I am posting this)
Create a KeyIndex class with the following properties :
Fields:
An array of integers.
Note: You can maintain another instance variable if needed (but you can’t use more than one).
Constructor:
This constructor takes an array of integers a and populates array k with the element in a as indices into k.
Note: make sure the build-up of your array k supports negative and non-distinct integers.
Methods:
This method searches for the value val within the array and returns true if found or false otherwise.
sort ()
Description:
This method will return the sorted form of the array that had been passed into the constructor.
NOTE: Create a tester class or write tester statements to check whether the methods in your KeyIndex class work properly
Please help me with this , I am stuck ! PLEASE WRITE IT IN C++
Thanks
1) bagUnion: The union of two bags is a new bag containing the combined contents of the original two bags. Design and specify a method union for the ArrayBag that returns as a new bag the union of the bag receiving the call to the method and the bag that is the method's parameter. The method signature (which should appear in the .h file and be implemented in the .cpp file is:
ArrayBag<T> bagUnion(const ArrayBag<T> &otherBag) const;
This method would be called in main() with:
ArrayBag<int> bag1u2 = bag1.bagUnion(bag2);
Note that the union of two bags might contain duplicate items. For example, if object x occurs five times in one bag and twice in another, the union of these bags contains x seven times. The union does not affect the contents of the original bags.
Here is the main file:
#include <cstdlib>#include <iostream>#include "ArrayBag.h"using namespace std;
template…
Chapter 13 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 13.2 - Prob. 13.2.1CPCh. 13.2 - The getArea() and getPerimeter() methods may be...Ch. 13.2 - True or false? a.An abstract class can be used...Ch. 13.3 - Prob. 13.3.1CPCh. 13.3 - Prob. 13.3.2CPCh. 13.3 - Prob. 13.3.3CPCh. 13.3 - What is wrong in the following code? (Note the...Ch. 13.3 - What is wrong in the following code? public class...Ch. 13.4 - Can you create a Calendar object using the...Ch. 13.4 - Prob. 13.4.2CP
Ch. 13.4 - How do you create a Calendar object for the...Ch. 13.4 - For a Calendar object c, how do you get its year,...Ch. 13.5 - Prob. 13.5.1CPCh. 13.5 - Prob. 13.5.2CPCh. 13.5 - Prob. 13.5.3CPCh. 13.5 - Prob. 13.5.4CPCh. 13.6 - Prob. 13.6.1CPCh. 13.6 - Prob. 13.6.2CPCh. 13.6 - Can the following code be compiled? Why? Integer...Ch. 13.6 - Prob. 13.6.4CPCh. 13.6 - What is wrong in the following code? public class...Ch. 13.6 - Prob. 13.6.6CPCh. 13.6 - Listing 13.5 has an error. If you add list.add...Ch. 13.7 - Can a class invoke the super.clone() when...Ch. 13.7 - Prob. 13.7.2CPCh. 13.7 - Show the output of the following code:...Ch. 13.7 - Prob. 13.7.4CPCh. 13.7 - What is wrong in the following code? public class...Ch. 13.7 - Show the output of the following code: public...Ch. 13.8 - Prob. 13.8.1CPCh. 13.8 - Prob. 13.8.2CPCh. 13.8 - Prob. 13.8.3CPCh. 13.9 - Show the output of the following code: Rational r1...Ch. 13.9 - Prob. 13.9.2CPCh. 13.9 - Prob. 13.9.3CPCh. 13.9 - Simplify the code in lines 8285 in Listing 13.13...Ch. 13.9 - Prob. 13.9.5CPCh. 13.9 - The preceding question shows a bug in the toString...Ch. 13.10 - Describe class-design guidelines.Ch. 13 - (Triangle class) Design a new Triangle class that...Ch. 13 - (Shuffle ArrayList) Write the following method...Ch. 13 - (Sort ArrayList) Write the following method that...Ch. 13 - (Display calendars) Rewrite the PrintCalendar...Ch. 13 - (Enable GeometricObject comparable) Modify the...Ch. 13 - Prob. 13.6PECh. 13 - (The Colorable interface) Design an interface...Ch. 13 - (Revise the MyStack class) Rewrite the MyStack...Ch. 13 - Prob. 13.9PECh. 13 - Prob. 13.10PECh. 13 - (The Octagon class) Write a class named Octagon...Ch. 13 - Prob. 13.12PECh. 13 - Prob. 13.13PECh. 13 - (Demonstrate the benefits of encapsulation)...Ch. 13 - Prob. 13.15PECh. 13 - (Math: The Complex class) A complex number is a...Ch. 13 - (Use the Rational class) Write a program that...Ch. 13 - (Convert decimals to fractious) Write a program...Ch. 13 - (Algebra: solve quadratic equations) Rewrite...Ch. 13 - (Algebra: vertex form equations) The equation of a...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Mobile Service Provider A mobile phone service has three different subscription packages for its customers: Pac...
Starting Out with C++: Early Objects (9th Edition)
Write an SQL query to list all product line names and, for each product line, the number of products and the av...
Modern Database Management
Where do you declare class-level variables?
Starting Out With Visual Basic (7th Edition)
Write Java statements to accomplish each of the following tasks: Use one statement to decrement the variable X ...
Java How To Program (Early Objects)
Word Game Write a program that plays a word game with the user. The program should ask the user to enter the fo...
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
What is the difference between virtual memory and main memory?
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Please help solve this with java i posted it before and got rejected :( Modify the Show class such that it implements the Comparable interface of java.lang. Remember to add the concrete type Show between <> when you implement Comparable. Note the syntax error that occurs and understand why it occurs. 2. Implement (override) the compareTo method in the Show class such that it compares the showsaccording to their rates: returns 1 if the first show’s rate is greater than the second, -1if the first show’s rate is less than the second, and 0 if they are equal. (First show is “this”, second show is o) 3. Define an interface named Ratable, that has the method updateRate as shown in the UML diagram, in a file named Ratable.java. 4. Modify the Show class such that it implements the Ratable interface. Note the syntax error that occurs in the updateRate method and understand why it occurs. 5. Modify the updateRate method in the Show class such that it returns a double value that represents…arrow_forward(see image for code) Consider the following code. Replace the tags _??1_ and _??2_, respectively, by filling in the text fields below, such that running printGenericCollection(c) prints the contents of the Collection object c the console:arrow_forward5. Now examine the for-loops in the above Java program. (assume that we have the have replaced the array with an ArrayList) a) Which ArrayList method should you use to control the for-loop iterations? b) Explain why the first for-loop cannot be controlled by that ArrayList method (but the other two for-loops can). Here is a quick review of how array elements are modified and accessed: 1. public class BasicArray{ 2. public static void main(String[] args) int[] basic = new int[4]; for (int i=0; iarrow_forward(Implement set operations in MyList)(JAVA) Please use class name: Exercise_01 The implementations of the methods addAll, removeAll, retainAll, toArray(), and toArray(T[]) are omitted in the MyList interface. Implement these methods. Test your new MyList class using the code at https://liveexample.pearsoncmg.com/test/Exercise24_01.txt. Sample Output: Enter five strings for array name1 separated by space: TomGeorgePeterJeanJaneEnter five strings for array name2 separated by space: TomGeorgeMichaelMichelleDanielEnter two strings for array name3 separated by space: TomPeterlist1:[Tom, George, Peter, Jean, Jane]list2:[Tom, George, Michael, Michelle, Daniel]After addAll:[Tom, George, Peter, Jean, Jane, Tom, George, Michael, Michelle, Daniel] list1:[Tom, George, Peter, Jean, Jane]list2:[Tom, George, Michael, Michelle, Daniel]After removeAll:[Peter, Jean, Jane] list1:[Tom, George, Peter, Jean, Jane]list2:[Tom, George, Michael, Michelle, Daniel]After retainAll:[Tom, George] list1:[Tom, George,…arrow_forward(already solved on bartleby) You are required to build a mini FunTime application for the kids to playwith their electronic toys in a virtual world. Follow the given steps Build a class Toy having the following data members Name(String) Color (String) Type (String) Price (float) batteryHealth (int) Provide constructor with arguments for name, color, type, and price. Initialize batteryHealth to 5 (which means full). Provide getter for each of these but no setters. Provide a function charge(String time). This function would increase the batteryHealth of the toy according to following rules Time Increase in battery health 15 mins 20% charging (Increase health by 1) 30 mins 40% 45 mins 60% 1 hour 80% 1 hour 15 mins 100% If the toy is already fully charged, then no more charging should be done and appropriate message to be displayed. The charge function returns the new health of the battery of toy object. Provide another function play() that reduces the…arrow_forwardWrite the definitions of the member functions of the classes arrayListType and unorderedArrayListType that are not given in this chapter. The specific methods that need to be implemented are listed below. Implement the following methods in arrayListType.h: isEmpty isFull listSize maxListSize clearList Copy constructor Implement the following method in unorderedArrayListType.h insertAt Also, write a program (in main.cpp) to test your function.arrow_forwardComplete the Course class by implementing the printRoster() method, which outputs a list of all students enrolled in a course and also the total number of students in the course. Given classes: Class Course represents a course, which contains an ArrayList of Student objects as a course roster. (Type your code in here) Class Student represents a classroom student, which has three fields: first name, last name, and GPA. (Hint: toString() returns a String representation of the Student object.) Ex: If the following students and their GPA values are added to a course: Henry Cabot with 3.5 GPABrenda Stern with 2.0 GPAJane Flynn with 3.9 GPALynda Robison with 3.2 GPA then the program output is: Henry Cabot (GPA: 3.5) Brenda Stern (GPA: 2.0) Jane Flynn (GPA: 3.9) Lynda Robison (GPA: 3.2) Students: 4 course.java import java.util.ArrayList; // Class representing a studentpublic class Course { private ArrayList<Student> roster; // Collection of Student objects public Course() {…arrow_forwardA) Consider the generic print() method, write a method that takes an array of E, where E must be Comparable or extend a type that is Comparable, and returns a reference to the greatest object in the array. In this case, the greatest value is one for which compareTo() would return 0 or more for any other object in the array. If there is more than one possible largest value (these would have to be equal to each other but greater than any other objects in the array), it does not matter which one you choose. B) Write a generic Java queue class (a plain queue, not a priority queue). Call it GenericQueue, because the JDK already has an interface called Queue. The class must be able to create a queue of objects of any reference type. Consider the GenericStack class shown in the lecture notes for some hints. Like the Stack, the GenericQueue should use an underlying ArrayList<E>. Write these methods and any others you find useful: enqueue() adds an E to the queue peek() returns a…arrow_forwardImplement the following class and write a driver classarrow_forwardPlease help write this in C++, I am kinda lost. bagDifference: The difference of two bags is a new bag containing the entries that would be left in one bag after removing those that also occur in the second. Design and specify a method difference for the ArrayBag that returns as a new bag the difference of the bag receiving the call to the method and the bag that is the method's parameter. The method signature is: ArrayBag<ItemType> bagDifference(const ArrayBag<ItemType> &otherBag) const; Note that the difference of two bags might contain duplicate items. For example, if object x occurs five times in one bag and twice in another, the difference of these bags contains x three times. Here is the all of the file: ArrayBag.cpp: #include <string>#include "ArrayBag.h" template <class T>ArrayBag<T>::ArrayBag() : itemCount(0) {// itemCount = 0;} template <class T>ArrayBag<T>::ArrayBag(const ArrayBag& orig) {itemCount =…arrow_forwardSolve this using python language and don't use any built in function. Create a KeyIndex class with the following properties : Fields: int [ ] k; Description An array of integers. Note: You may maintain another global variable(java)/instance variable(python) if needed (but you can’t use more than one). Constructor:(10 marks) KeyIndex(int [ ]a) Description: This constructor takes an array of integers a and populates array k with the element in a as indices into k. Note: make sure the build-up of your array k supports negative and non-distinct integers. Methods: search (int val) Description: This method searches for the value val within the array and returns true if found or false otherwise. sort () Description: This method will return the sorted form of the array that had been passed into the constructor. NOTE: Create a tester class or write tester statements to check whether the methods in your KeyIndex class work properly.arrow_forwardPart I Explain encapsulation and packaging in Java. Part II Create a package for int array operations. Provide at least 5 different operation by this package. The operations are totally up to you. Part III Create a Test package in order to test the operations you defined in Part II. Note: Do not compress your files, submit only java files. Note: Do not forget to justify your answers with comments.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
Program to find HCF & LCM of two numbers in C | #6 Coding Bytes; Author: FACE Prep;https://www.youtube.com/watch?v=mZA3cdalYN4;License: Standard YouTube License, CC-BY