A program to display Inverted Triangle.

Display :

                5 5 5 5 5

          4 4 4 4

          3 3 3

          2 2

          1

class CreateInvertTriangle{

      public static void main(String args[]){

           int num = Integer.parseInt(args[0]);

           while(num > 0){

              for(int j=1;j<=num;j++){

                  System.out.print(" "+num+" ");

                }

                System.out.print("\n");

                num--;

            }

      }

}

A program to generate a Triangle.

Display :

               1

              2 2

              3 3 3

              4 4 4 4

class CreateTriangle{

      public static void main(String args[]){

          int num = Integer.parseInt(args[0]);

          for(int i=1;i<=num;i++){

             for(int j=1;j<=i;j++){

                System.out.print(" "+i+" ");

             }

             System.out.print("\n");

           } 

    }

}