Question

I have a 2D array of 5 rows and 5 columns, all filled with the value 0. How can I make my program do this:

1. Enter any random combination of row and column like 2-5, without the [] brackets. Just typing 2-5 should be enough to make my program understand I mean row 2 column 5

2. Assign value I enter to said array in row-column combination.

This is what I got so far. As you can see I have only managed to output the values of all array elements.

import java.util.*;

public class stink {

    public static void main(String[]args){
        int[][] kuk = new int[5][5];
        printMatrix(kuk);
    }

    public static void printMatrix(int[][] matrix)
    {
        for (int row = 0; row < matrix.length; row++)
        {
            for (int col = 0; col < matrix[row].length; col++)
                System.out.printf("%2d", matrix[row][col]);
            System.out.println();
        }
    }
}

Answer 1

this is not a copy/paste ready answer, but it should at least give you an indication on how you could handle this.

        int rows = 0;
        int columns = 0;
        Scanner scan = new Scanner(System.in);
        System.out.println("Rows: ");
        rows = scan.nextInt();
        System.out.println("Columns: ");
        columns = scan.nextInt();           
        int[][] kuk = new int[rows][columns];