9. Write a class to represent spheres. Your class should implement the fol- lowing methods: init (self, radius) Creates a sphere having the given radius. getRadius (self) Returns the radius of this sphere. surfaceArea (self) Returns the surface area of the sphere. volume (self) Returns the volume of the sphere. Use your new class to solve Programming Exercise 1 from Chapter 3. DII F5 F6

9. Write a class to represent spheres. Your class should implement the fol- lowing methods: init (self, radius) Creates a sphere having the given radius. getRadius (self) Returns the radius of this sphere. surfaceArea (self) Returns the surface area of the sphere. volume (self) Returns the volume of the sphere. Use your new class to solve Programming Exercise 1 from Chapter 3. DII F5 F6

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

1/ Write a BankAccountTester class whose main method constructs a bank account, deposits $1,000, withdraws $500, withdraws another $400, and then prints the remaining balance. Also print the expected result 2/ Implement a class Employee. An employee has a name (a string) and a salary (a double). Provide a constructor with two arguments public Employee(String employeeName, double currentSalary) and methods public String getName() public double getSalary() public void raiseSalary(double byPercent) These methods return the name and salary, and raise the employee's salary by a certain percentage. Sample usage: Employee harry = new Employee("Hacker, Harry", 50000); harry.raiseSalary(10); // Harry gets a 10 percent raise Supply an EmployeeTester class that tests all methods. 3/Implement a class Car with the following properties. A car has a certain fuel efficiency (measured in miles/gallon or liters/km—pick one) and a certain amount of fuel in the gas tank. The efficiency is specified in…
Implement a new class Contact :public Person I provided person.h you don't have to touch person.h just need help on contact.h class public person and private person please help me
Implement the design of the Patient class so that the following output is produced:[For BMI, the formula is BMI = weight/height^2, where weight is in kg and height inmeters] Driver Code # Write your code herep1 = Patient("A", 55, 63.0, 158.0)p1.printDetails()print("====================")p2 = Patient("B", 53, 61.0, 149.0)p2.printDetails() Output
Implement a class Season that represents a season during a specified year. For purposes of thisproblem, assume that the seasons in each year are, in order, 'Winter', 'Spring', 'Summer', 'Autumn' .__init__, __repr__A Season object is created by calling the constructor and supplying two optional arguments:1. season, defaults to 'Winter'2. calendar year, an int , defaults to 2023For the __repr__ , see the usage below: The next and prev methods modify a Season object by changing it to the next season or previousseason in sequence, respectively. Note that the seasons can "roll over" or "roll back" and that this maychange the year by +/-1. 1. During each year, the seasons occur in this sequence: 'Winter', 'Spring', 'Summer', 'Autumn' 2. next - change to next season, if the current season is Autumn then year will increase by 1 3. prev - change to previous season, if Winter then year will decrease by 1 Implement the == operator ( __eq__ method) to compare two Season…
Implement a class RoachPopulation that simulates the growth of a roach population. The constructor takes the size of the initial roach population. The breed method simulates a period in which the roaches breed, which doubles their population. The spray(double percent) method simulates spraying with insecticide, which reduces the population by the given percentage. The getRoaches method returns the current number of roaches. A program called RoachSimulation simulates a population that starts out with 10 roaches. Breed, spray to reduce the population by 10 percent, and print the roach count. Repeat three more times.
Take the tax program from the last homework assignment and implement it using classes and objects instead. To do so, create a class definition for a class called Customer with attributes income and tax. It should also have a set method for income, and a calcTax() method to assign tax and return it. As a reminder, the tax is calculated as follows: Income Tax Due $0 - $50,000 5% $50,000-$100,000 $2,500 + 10% of (income > $50,000) > $100,000 $7,500 + 15% of (income > $100,000) Create a Customer object in main, have the user enter the income and assign this to the income variable of the Customer object, and then call the calcTax() method for the Customer object and print the tax due.
Write a Java program with at least two classes. Use a circle object to represent it. The class must offer at least one (non-static) setter method and one (non-static) getter method. Implement at least one test that invokes the setter method and the corresponding getter method so that the value out == the value in. Also use assert.Equal(60, circle1.getCircumference(), 10); and assert.Equals(10, circle1.get Radius(), 0.1); for radius
Add the following methos to the class Person(code bellow) in Python: a) Add a method isDescendant(personID) to Person which takes a person identifier string as an argument and returns True if the identified person is an descendant of self or False if this is not the case. The answer should be True when the identified person is self. b) Add a method printAncestors() to Person that does what its name suggests. You aren't likely to manage to make this look as good as the output of printDescendants, but each line should include some indication how many generations up the tree the ancestor is. Just starting the line with a number and appropriate indentation is sufficient. from collections import namedtuple class Person(): # Stores info about a single person # Created when an Individual (INDI) GEDCOM record is processed. #------------------------------------------------------------------- def __init__(self,ref): # Initializes a new Person object, storing the string…
Implement the design of the Ironman and DoctorStrange class derived from Avengers class so that the following code generates the output below: class Avengers: numberOfAvengers = 0 def __init__(self, name = None): self.name = name print('Welcome to Multiverse!') if self.name == None: print('Who is your favourite Super Hero?') else: print(f'{self.name} is your favourite Super Hero!') def hasSuperPower(self): print('All Avengers have super powers.') def fightThanos(self): return 'No avenger can fight Thanos' #Write your code here #------------------------------------------------------------------------------------- print('1.===============================') print('Number of Avengers:', Avengers.numberOfAvengers) print('2.===============================') a1 = Avengers() print('3.===============================') a1.hasSuperPower() print('4.===============================') print(a1.fightThanos()) print('5.===============================') im1 = Ironman('Tony Stark')…
Write a class Point with instance variables as: xCoordinate(int) and yCoordinate(int). Write public instance methods (getters & setters) for each instance variable. Now, write a class Circle with private instance variables as radius and Pi (value is 3.14). Write public setter, getter for radius, Area method for calculating Area, Draw method for radius.  Formula for calculating area=pi*r^2  Formula for calculating radius= Math.sqrt (xCordinate^2+yCordinate^2) a. Extend a Circle class from Point class such as Class Circle extends Pointb. Write a Default constructor in Circle class that sets radius, xCoordinate & yCoordinate to some default value e.g. -1;c. Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter.Now write a ColoredCirlce class with private instance variable as color (String) and public setter & getters. Extend the ColoredCircle from Circle and do the following operations.d. Write a default constructor…
Implement the design of the ECustomer class so that the following output is produced:[Your code should work for any number of products added in the setProductDetails method]# Write your codes here.print("Total E-Customer:", ECustomer.count)c1 = ECustomer("James")c1.setProductDetails("TV",35000,"Air Cooler", 9000)c2 = ECustomer("Mike")c2.setProductDetails("Mobile",20000,"Headphone",1200,"Fridge", 45000)c3 = ECustomer("Sarah")c3.setProductDetails("Headphone", 1200)print("=========================")c1.printDetail()print("=========================")c2.printDetail()print("=========================")c3.printDetail()print("=========================")print("Total E-Customer:", ECustomer.count)Output:Total E-Customer: 0=========================Name: JamesProducts: TV, Air CoolerTotal cost: 44000=========================Name: MikeProducts: Mobile, Headphone, FridgeTotal cost: 66200=========================Name: SarahProducts: HeadphoneTotal cost: 1200=========================Total E-Customer:…
Add the following accessor methods to your Rectangle class:public boolean contains(int x, int y)public boolean contains(Point p)Returns whether the given Point or coordinates lie inside the bounds of this Rectangle .