public class  TwoDimensionalExample
{
	public static void main(String[] args) 
	{
		int TwoDarray[][]=new int[0][0];
		int k=0;
		for (int i=0; i<5; i++)
		{
			for(int j=0; j<=i; j++)
			{
				System.out.print(" "+ k);
			k++;
		}
		System.out.println(" ");
		}
	}
}