//	 Lab 2, CS 335J, Winter 2008 – Barbara Wahl
//	 Alphabet Class, part 2
//	 Add the methods “getLanguage(int n)” and “printLanguage()” to Alphabet class,
//	 and writing a main method to test.
	public Vector getLanguage(int n)
	// pre: n >= 0
	// post: returns a Vector containing language S* (in lexicographic
	// order)
	// up through length n; language strings are stored in the Vector as
	// StringBuffer objects.
	{
		Vector v = new Vector();
		v.add(new StringBuffer("")); // first is the empty string
		int finger = 0; // pointer for generating more strings
		StringBuffer oldString = (StringBuffer) v.get(finger);
		StringBuffer newString; 
				
		while(oldString.length() < n)
		{	
			// use oldString to generate more strings in language
			for(???) // for each symbol in the alphabet…
			{
				// start with oldString:
				newString = new StringBuffer(oldString.toString());		 
				???  // append ith alphabet symbol to end of newString
		        ???  // add a StringBuffer copy of newString to v
			}			
			??? // advance finger
			??? // update oldString reference
		}		
		??? // return
	}

	public static void printLanguage(Vector v)
	// pre: v is a Vector of StringBuffer objects, where the first object
	// is the empty string, “”
	// post: v is pretty-printed, one string per line, from head to tail
	// note: instead of blank, print “epsilon” for the empty string
	???

			
	// ** TEST METHOD **
	public static void main(String[] args) {
		// create two different alphabets, A1 and A2
		???
		// call getLanguage on A1 & display using printLanguage
		???
		// call getLanguage on A2 & display using printLanguage
	}
}