Answer to Question #256561 in Java | JSP | JSF for Nguu

Question

. Write a java program that specifies three parallel one dimensional arrays name length, width, and area. Each array should be capable of holding a number elements provided by user input. Using a for loop input values for length and width arrays. The entries in the area arrays should be the corresponding values in the length and width arrays (thus, area[i] = length [i]* width [i]) after data has been entered display the following output:

Length Width Area

-------- -------- -------

25 2.6 65.00

18.2 4.9 89.18

Sample Run1 Enter the array size: 5

Enter the Length and Width for Rectangle 1: 25 2.6

Enter the Length and Width for Rectangle 2: 18 4.9

Enter the Length and Width for Rectangle 3: 100 3.27

Enter the Length and Width for Rectangle 4: 1.84 7.4

Enter the Length and Width for Rectangle 5: 56 9.5 Output1:

Length Width Area

-------- -------- -------

25 2.6 65.00

18.2 4.9 89.18

100 3.27 327.00

1.84 7.4 13.62

56 9.5 532.00

Answer 1

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class LengthWidthArea {


	public static void main(String[] args) {


		Scanner input = new Scanner(System.in);
		int sizeOfArray = 0;
	


		System.out.print("Sample Run1 Enter the array size: ");
		sizeOfArray = input.nextInt();


		double area[][] = new double[sizeOfArray][3];
		for (int i = 0; i < area.length; i++) {


			System.out.print("Enter the Length and Width for Rectangle " + (i + 1) + " : ");
			for (int n = 0; n < area[i].length; n++) {
				area[i][n] = input.nextDouble();


			}
		}
		System.out.println("Length    Width    Area");


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


		System.out.println("\t\t\t"+sum(area));




		for (int i = 0; i < area.length; i++) {


			for (int n = 0; n < area.length; n++) {


				System.out.print(area[i][n] + "    ");


			}
			System.out.println();
		}


		


		input.close();


	}


	public static List<Double> sum(double[][] array) {
		List<Double> total = new ArrayList<>();
		for (int i = 0; i < array.length; i++) {
			double mult = 1;
			for (int k = 0; k < array[i].length; k++) {
				mult = mult * array[i][k];
			}
			total.add(mult);
		}
		return total;
	}


}