Practical 9 : Write an interactive program to print a string entered in a pyramid form. For instance, the string “stream” has to be displayed as follows:

                  s

               s     t

             s    t     r

         s     t     r    e

      s     t    r      e   a

   s     t    r     e      a   m

Program:

public class practical9

   {

    public static void main(String[] args)

    {

        int i, j, k;  String str = "Stream";

        for (i = 0; i < str.length(); i++)

      {

            for (j = (str.length() / 2) + 1; j >= i; j--)

                System.out.print(" ");

            

            for (k = 0; k <= i; k++)

                System.out.print(str.charAt(k) + " ");

            

            System.out.println();

        }

    }

}

Output: