Answer to Question #323379 in Java | JSP | JSF for Nhm

Question

Required Object Class and Driver Class ,Write a Java program to do the following

a) Read two-dimensional array (3 x3)

b) Find the diagonal elements of the array

Answer 1

import java.util.Arrays;
import java.util.Scanner;

class ArrayS{
    int[][] arr;
    int[] diagFirst, diagSecon;

    public ArrayS(int[][] arr) {
        this.arr = arr;
        this.diagFirst = new int[3];
        this.diagSecon = new int[3];

        findDiagonals();
    }

    public void findDiagonals(){
        for(int i = 0; i < 3; i++)
            diagFirst[i] = arr[i][i];

        System.out.println("");
        int j = 0;

        for(int i = 2; i >= 0; i--){
            diagSecon[j] = arr[j][i];
            j++;
        }
    }

    @Override
    public String toString() {
        return  "first diagonal " + Arrays.toString(diagFirst) +
                "\nsecond diagonal " + Arrays.toString(diagSecon);
    }
}

public class Main{

    public static void main(String[] args){
        Scanner in = new Scanner(System.in);

        int[][] arr = {{11, 59, 3}, {23, 42, 37}, {1, 2, 3}};

        ArrayS obj = new ArrayS(arr);

        System.out.println(obj.toString());


    }
}