Answer to Question #256553 in Java | JSP | JSF for Nguu

Question

Given a number N, create a 2D arrays with n rows and n columns. Now inspect the matrix pattern below and come up with a formula to populate the array for any give NXN matrix.

Sample Run1 Enter a number (N): 5 Output1:

5 4 3 2 1

10 8 6 4 2

15 12 9 6 3

20 16 12 8 4

25 20 15 10 5

Sample Run2 Enter a number (N): 3 Output2:

3 2 1

6 4 2

9 6 3

Answer 1

import java.util.*;


public class App {
	
	
	public static void main(String[] args) {
		Scanner keyBoard = new Scanner(System.in);
		System.out.print("Enter a number (N): ");
		int n = keyBoard.nextInt();
		int value = 1;
		for (int i = n; i >= 1; i--) {
			for (int j = n; j >= 1; j--) {
				System.out.print((j * value) + "\t");
			}
			System.out.println();
			value++;
		}


		keyBoard.close();


	}


}