public class MoveToFrontTransformer {
	
	/*
	 * Invert the Move-To-Front transformation
	 * @param input
	 * 			byte sequence from the output for transform()
	 * @return
	 * 			byte sequence after inverting the transformation
	 */
	public byte[] invertTransform(byte[] input)
	{
		throw new RuntimeException("You must implement this method");
	}
	
	/*
	 * Transform the byte sequence
	 * according to the MoveToFront transformation
	 * @param input byte sequence
	 * @return transformed byte sequence
	 * @throws NullPointerException
	 */
	public byte[] transform(byte[] input) 
	{
		throw new RuntimeException("You must implement this method");
	}

}