Pattern 15

import java.io.*;

class p15

{

    public static void main(String args[])throws IOException

    {

        int n,i,j,k;

        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

        System.out.println("Enter the number of rows: ");

        n=Integer.parseInt(br.readLine());

        for(i=7;i>=1;i-=2)
        {
             for(j=1;j<=i;j++)

            {

                System.out.print(j);

            }

            System.out.println();

        }

    }

}

           

Output:

Enter the number of rows: 

4

1234567

12345

123

1