RUBYの宿題教えてください。

class Game

  GOO=0;TYOKI=1;PAA=2

  def initialize
    @label=['グー','チョキ','パー']
    @players=['YOU','COM1','COM2','COM3']
    @carryover=0;@hands=Hash.new;@win=Hash.new;
    @players.each{|player| @win[player]=0}
    @goal=100
  end

  def msg(str)
    print "#{str}\n"
  end

  def win_pattern
    return [
      {'pat'=>[GOO,TYOKI], 'win'=> GOO},
      {'pat'=>[TYOKI,PAA], 'win'=> TYOKI},
      {'pat'=>[PAA,GOO].sort, 'win'=> GOO}
    ]
  end