Question

Define a class to accept values into a 4 x 4 integer array. Calculate and print the NORM of the array. 

NORM is the square root of sum of squares of all elements.

1	2	1	3
5	2	1	6
3	6	1	2
3	4	6	3

Sum of squares of elements = 1+4+1+9+25+4+1+36+9+36+1+4+9+16+36+9 = 201

NORM = Squareroot of 201 = 14.177446878757825

Answer 1

import java.util.*;
public class NormClass {
public static void main(String[] args) {
     int sum=0;
     double norm=0.0;
     Scanner sc = new Scanner(System.in);
     double[][] mat = new double[4][4];
     System.out.println("Enter values for 4×4 matrix: ");
     for (int i = 0; i <4; i++) {
        for (int j= 0; j < 4; j++) {
         mat[i][j] = scanner.nextDouble();
           }
for (int i = 0; i < 4; i++) {
   for (int j =0; j< 4; j++) {
   sum+=mat[i][j];
norm=Math.sqrt(sum);
System.out.println("Norm of the matrix is :"+
norm);
}
}