Arrays — Question 58

import java.util.Scanner;

public class KboatDDAColSum
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        
        int arr[][] = new int[4][5];
        
        System.out.println("Enter the 2D array:");
        for (int i = 0; i < 4; i++) {
            System.out.println("Enter elements of row " + (i + 1));
            for (int j = 0; j < 5; j++) {
                arr[i][j] = in.nextInt();
            }
        }
        
        System.out.println("Input array :");
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 5; j++) {
                System.out.print(arr[i][j] + "\t");
            }
            System.out.println();
        }
        
        //Compute column-wise sum
        for (int i = 0; i < 5; i++) {
            int cSum = 0;
            for (int j = 0; j < 4; j++) {
                cSum += arr[j][i];
            }
            System.out.println("Column " + (i + 1) 
                                + " sum = " + cSum);
        }
        
    }
}