printdemo1.java

一系列java小程序

public class PrintDemo1
{
    public static void main(String args[ ])
    {
        for (int i=0;i<=9;i++)
        {
            int j=1;
            while(j<=11-i)
            {
                 System.out.print(" ");
                 j=j+1;
            }
            for(int k=1;k<=i*2+1;k++)
                System.out.print(i);
            System.out.println();
        }
    }
}