What Is The Output of the value of x ?, when the value of a : count=2 class test { private: int count,x=0; public: test(): count(0) {} test(int c) : count(c) { x+=2;} int display() { return count; } test operator ++ () {++X; return test(++count); } }; int main() { test L, M ; ++L; M = ++L; return 0; }
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- I need a help in making a method that will Input a text that will be converted to Huffman code and Input a Huffman code that will be converted to its text equivalent.You can try this sample Character input: HAAHAABAAACACAAAABABABEBEBBAABEEBBCCCCCAAAAAAACCCDDDDDDAAADDDDDEEEEEEDDADDDADDEEEEEEEECCCEEEEEEEEEEDDEEEEEEEEEEBBEEEEEFFGGHAHHEEHHA Huffman.java import java.util.PriorityQueue;import java.util.Scanner;import java.util.Comparator;import java.util.ArrayList; class HuffmanNode { int data; char c; HuffmanNode left; HuffmanNode right;} class MyComparator implements Comparator<HuffmanNode> { public int compare(HuffmanNode x, HuffmanNode y) { return x.data - y.data; }} public class Huffman { public static void printCode(HuffmanNode root, String s) { if (root.left == null && root.right == null && Character.isLetter(root.c)) { System.out.println(s + "tttt"+ s.length()); return; } printCode(root.left, s + "0");…Below is Lexer.java, Token.java, StringHandler.java, and Main.java. I need help in writing test cases. Please write unit tests for lexer.java and make sure to show the full code with the screenshot of the output. Make sure to include the test cases as well. Lexer.java import java.util.LinkedList; public class Lexer { private StringHandler stringHandler; private int lineNumber; private int charPosition; public Lexer(String input) { stringHandler = new StringHandler(input); lineNumber = 1; charPosition = 0; } public LinkedList<Token> lex() { LinkedList<Token> tokens = new LinkedList<>(); while (!stringHandler.isDone()) { char c = stringHandler.peek(0); if (c == ' ' || c == '\t') { stringHandler.swallow(1); charPosition++; } else if (c == '\n') { tokens.add(new Token(TokenType.SEPARATOR, lineNumber,…Hi, can i get assistance with this book class in Java please? The comments with the "TODO" is what I need assistance with, thank you! The author class is attached to the question in case there is any relevance for it. public class Book {private String title;private double averageRating;private String ISBN;private int numPages;// TODO: insert an appropriate collection for associating Authors and initialise within constructors public Book(){} public Book(String title, double averageRating, String isbn, int numPages){ this.title = title;this.averageRating = averageRating;this.ISBN = isbn;this.numPages = numPages;}//accessorspublic String getTitle(){return title;}public double getAverageRating(){return averageRating;}public String getISBN(){return ISBN;}public int getNumPages(){return numPages;}// TODO: provide an accessor for the book collection public String getAuthorList(){String authorList ="";// TODO: insert code to return all author names separated by commas if multiple authorsreturn…
- Implement the design of the Pizza class so that the following output is produced:[Your code should work for any number of parameters added in the set_toppings_info method]# Write your codes here.print("Pizza Count:", Pizza.pizza_count)print("=======================")p1 = Pizza("Chicken")p1.set_toppings_info(25, 1, 4, 0)p1.display()print("------------------------------------")p2 = Pizza("Olives")p2.set_toppings_info(15, 1.5, 0, 0)p2.display()print("------------------------------------")p3 = Pizza("Sausage")p3.set_toppings_info(50, 5, 2, 0)p3.display()print("=======================")print("Pizza Count:", Pizza.pizza_count)Output:Pizza Count: 0=======================Toppings: Chicken25 calories1 g fat4 g protein0 g carbs------------------------------------Toppings: Olives15 calories1.5 g fat0 g protein0 g carbs------------------------------------Toppings: Sausage50 calories5 g fat2 g protein0 g carbs=======================Pizza Count: 3What is the output of the following code? Explain each line of the console output in yourown words. (HINT: if there are errors, please explain why the errors occur)import java.util.ArrayList;public class Pet {public void goToVet(){System.out.println("My Pet needs to go to Vet ...");}public static void main(String args[]){Hamster pug = new Hamster();Pet sally = new Pet();Pet loki = new Hamster();Object sunny = new Object();Object joy = new Pet();Object mini = new Hamster();ArrayList<Object> myList = new ArrayList<>(); myList.add(pug); myList.add(sally);myList.add(loki);myList.add(sunny);myList.add(joy);myList.add(mini);myList.forEach(i -> {if (i instanceof Hamster) {System.out.println("My Pet is cute: so " + (((Hamster) i).cute())+ "! ");((Hamster) i).goToVet();}else if (i instanceof Pet)((Pet) i).goToVet();elseSystem.out.println("This is not a Pet");});}}class Hamster extends Pet {public void goToVet(){System.out.println("My Hamster needs to go to Vet…What is the output of the following code? Explain each line of the console output in yourown words. (HINT: if there are errors, please explain why the errors occur) import java.util.ArrayList;public class Pet {public void goToVet(){System.out.println("My Pet needs to go to Vet ...");}public static void main(String args[]){Hamster pug = new Hamster();Pet sally = new Pet();Pet loki = new Hamster();Object sunny = new Object();Object joy = new Pet();Object mini = new Hamster();ArrayList<Object> myList = new ArrayList<>(); myList.add(pug); myList.add(sally);myList.add(loki);myList.add(sunny);myList.add(joy);myList.add(mini);myList.forEach(i -> {if (i instanceof Hamster) {System.out.println("My Pet is cute: so " + (((Hamster) i).cute())+ "! ");((Hamster) i).goToVet();}else if (i instanceof Pet)((Pet) i).goToVet();elseSystem.out.println("This is not a Pet");});}}class Hamster extends Pet {public void goToVet(){System.out.println("My Hamster needs to go to Vet…
- Fancy Integer ArrayList (ONLY NEED HELP WITH WRITING TEST CASES) For example, we have defined a “testRemoveInt” method for you (see below) which tests the “remove” method. Pass the tests provided then write additional tests where it says “// TODO”. You’ll do this for each unit test method in the program. import static org.junit.jupiter.api.Assertions.*; import java.util.ArrayList; import org.junit.jupiter.api.Test; class CustomIntegerArrayListTest { @Test void testSpliceIntInt() { CustomIntegerArrayList arr1 = new CustomIntegerArrayList(); arr1.add(2); arr1.add(3); arr1.add(4); arr1.add(5); arr1.add(6); arr1.splice(3, 2); ArrayList<Integer> lst1 = new ArrayList<Integer>(); lst1.add(2); lst1.add(3); lst1.add(4); assertEquals((int) lst1.get(0), (int) arr1.get(0)); assertEquals((int) lst1.get(1), (int) arr1.get(1)); assertEquals((int)…Validate that the following code, which adds the methods var() and stddev() to Accumulator, computes both the mean and variance of the numbers presented as arguments to addDataValue(): public class Accumulator{ private double m; private double s; private int N; public void addDataValue(double x) { N++; s = s + 1.0 * (N-1) / N * (x - m) * (x - m); m = m + (x - m) / N; } public double mean() { return m; } public double var() { return s/(N - 1); } public double stddev() { return Math.sqrt(this.var()); }} This implementation is less susceptible to roundoff error than the straightforward implementation based on saving the sum of the squares of the numbers.Solve below java problem please. You are given a list of Employee objects and you need to implement a method that returns the top n highest-paid employees. class Employee { private String name; private double salary; public Employee(String name, double salary) { this.name = name; this.salary = salary; } public String getName() { return name; } public double getSalary() { return salary; } }
- Validate that the following code, which adds themethods var() and stddev() to Accumulator, computes both the mean and varianceof the numbers presented as arguments to addDataValue():public class Accumulator{ private double m; private double s; private int N; public void addDataValue(double x) { N++; s = s + 1.0 * (N-1) / N * (x - m) * (x - m); m = m + (x - m) / N; } public double mean() { return m; } public double var() { return s/(N - 1); } public double stddev() { return Math.sqrt(this.var()); }}This implementation is less susceptible to roundoff error than the straightforward implementation based on saving the sum of the squares of the numberReview: 4. What is the output of below javacode? ___________import java.util.*;class Array{public static void main(String args[]){int array[] = new int [5];for (int i = 5; i > 0; i--)array[5-i] = i;Arrays.fill(array, 1, 4, 8);for (int i = 0; i < 5 ; i++)System.out.print(array[i]);}} 5. Complete the sentence: The type parameter section is surrounded by ________.6. A method that introduces its own type parameter is a generic method. True/False.7. Complete the sentence: Generic type parameters can be restricted to a group of types that implement a given interface. You can do that byusing the keyword__________.8. Type parameters can represent ( stand for) reference types as well as primitive types. True/false.Please complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Only finish the (d) question, Thank you ! Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } a) Implement a comparator called CompareCarsByMakeThenModel that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByMakeThenModel should return a value that will cause quicksort to sort an array of cars in ascending order (from smallest to largest) by make and, when two cars have the same make, in ascending order by model. b) Implement a comparator called CompareCarsByDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByDescendingMPG should return a value that will cause quicksort to sort an array of cars in descending order (from largest to smallest) by mpg. c)…