الخوارزمياتالتعامل مع المصفوفة ذات البعدين - التمرين الأول

import java.util.Scanner;
 
public class Matrix {
 
    public static void main (String[] args) {
 
        Scanner input = new Scanner(System.in);
 
        int a;
        int b;
        int[][] matrix;
 
        do
        {
            System.out.print("Enter the number of rows: ");
            a = input.nextInt();
        }
        while ( a <= 0 );
 
        do
        {
            System.out.print("Enter the number of columns: ");
            b = input.nextInt();
        }
        while ( b <= 0 );
 
        matrix = new int[a][b];
 
        System.out.print("\n");
 
        for (int i=0; i<a; i++)
        {
            for (int j=0; j<b; j++)
            {
                System.out.print("Enter matrix[" +i+ "][" +j+ "]: ");
                matrix[i][j] = input.nextInt();
            }
            System.out.print("\n");
        }
 
        for (int i=0; i<a; i++)
        {
            for (int j=0; j<b; j++)
            {
                System.out.print(matrix[i][j] + "\t");
            }
            System.out.print("\n");
        }
 
        System.out.print("\n");
 
    }
 
}