[java] 크기가 다른 배열

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public class homework
{
	public static void main(String[] args)
	{
		int [][]a = new int[3][];
		int count=0,i,j;
		for(i=0;i<3;i++)
		{
			a[i]=new int[i+1];	
		}
		for(i=0;i<3;i++)
		{			
			for(j=0;j<=i;j++)
			{
				count++;
				a[i][j]=count;
				System.out.print(a[i][j]);
			}
			System.out.println("");
		}
	}
}