QuestionConsider the following definition of a MysteryBox object:public class MysteryBox {private final int x0, x1, x2, x3;private final double y0;private final boolean z0;private final long[] a = new long [248];}Using the 64-bit memory cost model from lecture, how many bytes does each objectof type MysteryBox consume? Include all memory referenced by the object (deep memory).AnswerYour answer should be a positive integer that is a multiple of 8. QuestionWhich of the following parent [] array(s) could be the result of runningthe weighted quick-union algorithm on a set of 10 items?Recall that our weighted quick-union algorithm uses union by size (number of nodes),not union by height.AnswerMark all that apply.O0 22 3 4 5 6 7 3 25855512 4 2 50011911161U42211 6 2 4 8 700397000 9 0

Answered: Consider the following definition of a…

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

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Start with this class declaration: class Student { int sId; String name; double gpa;} Implement a Comparable and Comparator interface to provide the following three (3) alternative ways of ordering for the Student objects - based on sId (i.e., assume that this is selected as the natural ordering)- based on name, - based on gpa. Next declare a list of five Student objects, initialize them with random values. Test your code by printing out each of the following on separate lines: (original list of students, sorted list of students in ascending sId order, sorted list of students in ascending name order, sorted list of students in ascending gpa order).
Solve this using python language 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.
Consider the following class hierarchy: class Animal { ... } class Mammal extends Animal { ... } class Cat extends Mammal { ... } Write a generic method printArray that takes an array of any type and prints each element of the array. If the element is an instance of Animal or its subclass, the method should call the toString method of the object to print its details. Otherwise, the method should simply print the element. Your method should have the following signature: public static <T> void printArray(T[] array)
Write a Java class Student inherited from Person class. Your class must have the following features: Student - major: String + Student() + Student(name: String, id: int, major: String) + getMajor(): String + Override toString() method: you have to return needed data Fields values. Note: major data members can take only CS for Computer Science, CIS for Computer and Information Systems, CPE for Computer Engineering, SE for Software Engineering, and NES for Network Engineering and Security.
Python Code please Point of Sale Write a program that will manage the point of sale in a store. Build the ItemToPurchase class with the following: Attributes item_name (string) item_price (int) item_quantity (int) Default constructor Initializes item's name = "none", item's price = 0, item's quantity = 0 Method print_item_cost() Example of print_item_cost() output:Bottled Water 10 @ $1 = $10 Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Example of print_item_description() output:Bottled Water: Deer Park, 12 oz. Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor…
JAVA PROGRAM ASAP *********** THIS PROGRAM MUST WORK IN HYPERGRADE AND PASS ALL THE TEST CASES. Please create a program BECAUSE IT IS. MY HOMEWORK ASSIGNMENT with the following parts which are down below: The left index is inclusive and the right index is exclusive. 1. public static void bubbleSort(int[] array, int left, int right) { // your code here } 2. public static void insertionSort(int[] array, int left, int right) { // your code here } 3. public static void selectionSort(int[] array, int left, int right) { // your code here } Test Case 1 Please enter a space separated list of numbers to sort or type QUIT to exit:\n4 3 2 1ENTERSorting first half of the array using Bubble Sort algorithm:\n3 4 2 1\nSorting second half of the array using Bubble Sort algorithm:\n4 3 1 2\nSorting the array using Bubble Sort algorithm:\n1 2 3 4\nSorting first half of the array using Insertion Sort algorithm:\n3 4 2 1\nSorting second half of the array using Insertion…
Java Program The assignment requires two classes. Put all classes in the same package. Class Employee Attributes (all private): id: String lastName: String firstName: String salary: int Methods: Parameterized constructor for initializing a new Employee instance Getters for all attributes toString method to display an Employee's attributes (See output of executable below) Executable Class Create an array of at least eight Employee objects. Be sure to use many with identical last names, but don't order them by name in the array. Create an ArrayList from the array. Sort the ArrayList first by last name and then by first name. Using the forEach method and a lambda expression, print all employees alphabetically sorted by name. Create a LinkedList from the ArrayList. Create an iterator capable of cycling both forward and backward through the LinkedList. Iterate forward through the LinkedList without generating any output. Then iterate backwards through the LinkedList to print…
Write a java program to create a class Employee which contains member variables as name (String object)empid (Integer object)salary (Float object)age (Integer object)Define a default as well as a parameterized constructor to initialize member variables with default and specified values respectively. Define and overload a method search as defined below boolean search (Employee e[ ], String name) To search an employee with name in an array of employee objects, if found return true, else false.boolean search (Employee e[ ], Integer empid) To search an employee with the empid in an array of employee objects, if found return true, else false.Also define another method to get the name of employee having highest salary in a set of employees. String getHighestSalary(Employee e[ ]) To return the name of the employee with highest salary in an array of employee objects.Input: At least 3 employee details like name, empid, salary and age.Name of employee to searchId of employee to searchOutput:…
java Write a simple class to represent a Student. Each student object should have the following data items: A first natne, a lasl name, a student ID, and a GPA. Think carefully about how you should model this data and write getter (query) and setter (command) methods for each. Override public boolean equals(Object o) so that two student objects that have the same student ID are seen as equal
Please use java Part 2. Library Class Implement a class, Library, as described in the class diagram below. Library must implement the Comparable interface. The compareTo() method must compare the branch names and only the branch names. The comparison must be case insensitive. The equals() method must compare the branch names and only the branch names. The comparison must be case insensitive. Be sure to test the equals() and compareTo() methods before proceeding. Library - state: String - branch: String - city: String - zip: String - county: String - int squareFeet: int - int hoursOpen: int - int weeksOpen: int + Library(state: String, branch: String, city: String, zip: String, county: String, squareFeet: int, hoursOpen: int, weeksOpen: int) + getState(): String + getBranch(): String + getCity(): String + getZip(): String + getCounty(): String + getSquareFeet(): int + getHoursOpen(): int + getWeeksOpen(): int + setState(state: String): void + setBranch(branch:…
Java - Constructors Create a class named Person that has the attributes: First name - String Last name - String Gender - String Age - Integer Address - String Create two constructors: one that accepts the first name and last name only and one that accepts all attributes. Accept inputs for all attributes and create two objects that use each constructor. Print their attributes. Inputs 1. Enter first name 2. Enter last name 3. Enter gender 4. Enter age 5. Enter address Marceus Azalithen Male 20 Azalithzith Sample Output Enter first name: John Enter last name: Doe Enter gender: Male Enter age: 19 Enter address: JDoe Object 1 First name: John Last name: Doe Gender: Age: Address: Object 2 First name: John Last name: Doe Gender: Male Age: 19 Address: JDoe
Class Die java.lang.Objectextended by Diepublic class Dieextends java.lang.ObjectDie - an n-sided die with given integer values. The given integer values are returned via nextRoll() with uniform probability., Constructor SummaryDie() Creates a new Die instance with the default values: 1, 2, 3, 4, 5, 6.Die(int[] outcomes) Creates a new Die instance with the given integer outcomes.Die(int sides, int min) Creates a new Die with a given number of sides and an incremental sequence of values beginning with a given minimum value.Method Summaryint nextRoll() nextRoll - return one of the die values at random.Methods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitConstructor DetailDie public Die(int[] outcomes)Creates a new Die instance with the given integer outcomes.Parameters:outcomes - an int[] value - an array of the integer values for each side of the die.Die public Die(int sides,int min)Creates a new Die with…

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