Question

In Euclidean geometry, a rhombus is a simple quadrilateral whose four sides all have the same length. If lengths of each of the sides are a and the distance between the parallel sides (known as height) is h, then the area of the rhombus is defined as a × h. Suppose that you already have a class named Rhombus that can hold a and h. The class has a method to compute the area as well. The class is as follows.

public class Rhombus {

private double a, h;

Rhombus nextRhombus;

Rhombus(){

h=1; a=h;

}

Rhombus(double aa, double hh){

a=aa; h=hh;

}

public double geta(){

return a;

}

public double geth(){

return h;

}

public double getArea(){

return a*h;

}

public boolean isSquare(){

return a==h;

}

}

Notice that Rhombus nextRhombus; in the Rhombus class can be used to construct a linked list.

(15 points) Now, you have another class named RhombusProcessor that has Rhombus objects in an array in the main method. Write a method named getSquares in the RhombusProcessor class to copy only the Rhombus objects that represent squares. The getSquares method must return these square shaped Rhombus objects using a linked list in the same oder they appear in the original list. Notice that you will only return the head of the linked list. The program is partially written; you just need to write the getSquares method in the space provided within the RhombusProcessor class. The expected header is public static Rhombus getSquares(Rhombus[] r).

public class RhombusProcessor {

public static Rhombus getSquares(Rhombus[] r){

Answer 1

Rhombus.java

public class Rhombus {

private double a, h;

Rhombus nextRhombus;

Rhombus(){

h=1; a=h;

}

Rhombus(double aa, double hh){

a=aa; h=hh;

}

public void setNextRhombus(Rhombus nextRhombus) {

this.nextRhombus = nextRhombus;

}

public double geta(){

return a;

}

public double geth(){

return h;

}

public double getArea(){

return a*h;

}

public boolean isSquare(){

return a==h;

}

}

Driver class

public class CdDriver {

public static void main(String a[]){

Rhombus rh=new Rhombus(5.3, 4.1);

System.out.println("Area of rhombus: "+rh.getArea());

System.out.println("Is it a square? "+rh.isSquare());

System.out.println("------------------------------------");

Rhombus rh1=new Rhombus(5.3, 5.3);

System.out.println("Area of rhombus: "+rh1.getArea());

System.out.println("Is it a square? "+rh1.isSquare());

//create linked list by attaching rh1 with rh

rh.setNextRhombus(rh1);

}

}