Assignment 2: Array Coding 
	            Huaqing Wang

I.	Purpose: Understand Java Array

II.	Description:


	Write a program which displays the following line:


	Enter H/h/? for help, or command : 


   When H/h/? is entered, the following menu is printed: 

		======================== CS 3990 Assignment 2  ===============
		G/g:   Ask for a N, and generate N X N array of charctors and
               fill the array with random characters randomly picked
               up from "abcd....xyz" and "ABC...XYZ". 

		S/s/ : Display the array in N columns and N rows.

		V/v/ : Repetively 
                    1. rotate each of rechtagles circle one position
                       colockwise, 
                    2. disply the array.
                    3. Prompt for contime with step 1 or quit.

		--------------------------------------------------------------
		H/h/?: Display this menu.
		E/e  : Exit
		==============================================================

   Write code to implement the actions shown in the menu.