java] Write a two-dimensional transformation library by implementing the following API: public class PolygonTransform { // Returns a new array object that is an exact copy of the given array. // The given array is not mutated. public static double[] copy(double[] array) // Scales the polygon by the factor alpha. public static void scale(double[] x, double[] y, double alpha) // Translates the polygon by (dx, dy). public static void translate(double[] x, double[] y, double dx, double dy) // Rotates the polygon theta degrees counterclockwise, about the origin. public static void rotate(double[] x, double[] y, double theta) // Tests each of the API methods by directly calling them. public static void main(String[] args)

I need to add 7 and 8 to my code below.... Compare and contrast the array and arrayList. Give at least one example that describe when to use arrayList compared to an array. package javaSvanos; import java.util.Scanner; public class module3project { public static void main(String args[]) { String name; double weight; int height_feet; int height_inch; String birth_date; try (Scanner sc = new Scanner(System.in)) { try { System.out.println("Hello! Please enter the name of the patient:\t"); name = sc.nextLine(); System.out.println("Please enter the weight of the patient (in lbs):\t"); weight = sc.nextInt(); System.out.println("Please enter the height of the patient (feet):\t"); height_feet...

In java Define and create an array (called emps) of object references for objects of class Employee of length 100. (b) Create three objects for classes SalariedEmp, WeeklyEmp, and HourlyEmp (where these 3 classes are subclasses of class Employee); and with references e1, e2, e3 for the 3 objects:(c) Assign e1,e2, e3 to the first three elements of array emps:(d) Print the earnings of the 100 employee in the array emps in one loop (with polymorphism) where earnings are calculated with method earnings():

import java.util.Scanner; public class LabProgram { public static Roster getInput(){ /* Reads course title, creates a roster object with the input title. Note that */ /* the course title might have spaces as in "COP 3804" (i.e. use nextLine) */ /* reads input student information one by one, creates a student object */ /* with each input student and adds the student object to the roster object */ /* the input is formatted as in the sample input and is terminated with a "q" */ /* returns the created roster */ /* Type your code here */ } public static void main(String[] args) { Roster course = getInput(); course.display(); course.dislayScores(); }} public class Student { String id; int score; public Student(String id, int score) { /* Student Employee */ /* Type your code here */ } public String getID() { /* returns student's id */...

Java Foundations Consider the following Java method to reverse an array, i.e. rearrange its elements to the opposite order. An array containing {1, 3, 5} would contain {5, 3, 1} after being reversed. public static void arrayReverse(int[] array) { int le, ri; for (le = 0, ri = array.length - 1; le < array.length / 2; le++, ri--) { int temp = array[le]; array[le] = array[ri]; array[ri] = temp; } } Write the worst-case runtime efficiency of arrayReverse in BigOh notation.

public class ArraySection { static void arraySection(int a[], int b[]) { int k = 0; int [] c = new int[a.length]; for(int i = 0; i < a.length; i++) { for(int j = 0; j < b.length; j++) if(a[i] == b[j]) c[k++] = a[i]; } for(int i = 0; i < k; i++) System.out.println(c[i]); System.out.println(); } public static void main(String[] args) { int a[] = { 1, 2, 3, 4, 5 }; int b[] = { 0, 2, 4,5 }; arraySection(a,b); }} Calculate the algorithm step number and algorithm time complexity of the above program?

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Check if Array Elements are Consecutive in Java. Given an array, we need to check if array contains consecutive elements. For example: Input: array[] = {5, 3, 4, 1, 2} Output: true As array contains consecutive elements from 1 to 5 Input: array[] = {47, 43, 45, 44, 46} Output: true As array contains consecutive elements from 43 to 47 Input: array[] = {6, 7, 5, 6} Output: false As array does not contain consecutive elements.

Q5. a) Write a java program to demonstrate the use of mutable objects to find the Perimeter of a rectangle using Point (10,4) .Perimeter = 2(length+ breadth). b) What is the purpose of a garbage collector?

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Answer the given question with a proper explanation and step-by-step solution. ANSWER IN C++

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Define a two-dimension array with 10 rows and 2 columns in java does this look correct? I think I am missing something import java.util.Scanner; import java.util.Arrays; public class MainClass { public static void main(String[] args) { int[][] students = new int [10][2]; for(int i = 0; i < 10; i++) { for(j = 0; j < 2; j++) { students[i][j] = input.nextInt(); }