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Program 13 Write a Java program to store data in a matrix 4 × 4 and display the elements of the matrix
by replacing each element of the left diagonal with zero.
1 import java.util.*;
2 class diagonal
3 {
4 public static void main(String args[])
5 {
6 Scanner sc= new Scanner(System.in);
7 int i, j;
8 int ar[ ][ ]=new int[4][4];
9 for (i=0; i<4; i++)
10 {
11 for(j=0; j<4; j++)
12 {
13 System.out.print("Enter a number: ");
14 ar[i][j] =sc.nextInt();
15 }
16 }
17 System.out.println("4x4 matrix is");
18 for(i=0; i<4; i++)
19 {
20 for(j=0; j<4; j++)
21 {
22 System.out.print(ar[i][j]+" ");
23 }
24 System.out.println();
25 }
26 for(i=0; i<4; i++)
27 {
28 ar[i][i]=0;
29 }
30 System.out.println("New elements are");
31 for (i=0; i<4; i++)
32 {
33 for(j=0; j<4; j++)
382 Touchpad Computer Science (Ver. 3.0)-XI
