Computer Applications
Define a class to accept values into a 4 × 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 = Square root of 201 = 14.177446878757825
Java
Java Arrays
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Answer
import java.util.Scanner;
class Norm{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
int a[][] = new int[4][4];
int sum = 0;
System.out.println("Enter array elements:");
for(int i = 0; i < 4; i++){
for(int j = 0; j < 4; j++){
a[i][j] = in.nextInt();
}
}
for(int i = 0; i < 4; i++){
for(int j = 0; j < 4; j++){
sum += a[i][j] * a[i][j];
}
}
double root = Math.sqrt(sum);
System.out.println("NORM = " + root);
}
}Output
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