/** Here is another examle of generating something from a grammar, but this
 *  time it'll be a story patterned after "Old Mother Hubbard".  Here is our
 *  grammar:
 *  S --> "Old Mother Hubbard went to the cupboard to fetch her poor dog
 *         a bone.  But when she came there the cupboard was bare, and so
 *         the poor dog had none." A
 *  A --> e | BA
 *  B --> "She went to the" P "to buy him a" T
 *  P --> "baker's" | "tavern" | "grocer's" | "tailor's" | "cobbler's" |
 *        "chemist's"
 *  T --> "shoe" | "hat" | "cigar" | "beer" | "cake" | "suit" | "tire"
 */
public class Story1
{
  public static void main(String [] args)
  {
    String S = "Old Mother Hubbard went to the cupboard\n" +
               "To fetch her poor dog a bone;\n" +
               "But when she came there the cupboard was bare,\n" +
               "And so the poor dog had none.\n\n" + A();
    System.out.println(S);
  }

  // Let's have a 80% chance of continuing the story!
  public static String A()
  {
    if (Math.random() < .2)
      return "";
    else
      return B() + A();
  }

  public static String B()
  {
    return "";
  }

  public static String P()
  {
    return "";
  }

  public static String T()
  {
    return "";
  }
}