using System;

​

public class Program

{

    public static void Main()

    {

        int[][] intArray = new int[4][]; // 4 rows

        intArray[0] = new int[]{1, 2};

        intArray[1] = new int[]{3, 4, 5};

        intArray[2] = new int[]{6, 7, 8, 9};

        // Row 3 initialized with null value

        string display = string.Empty;  

​

        foreach (int[] rowValue in intArray) 

        {        

              foreach (int colValue in rowValue)         

              {                  

                      display +=   colValue + " ";        

              }

​

             // move to the next line

             display += "\n"; 

        }  

        Console.WriteLine(display);

    }

}