「オフラインリアルタイムどう書く第三回の参考問題」を解いてみた

↑http://qiita.com/items/ebd8a56b41711ba459f9

こんな感じになった。

baseball_count.rb

class BsoCount
  def initialize
    @ball = @strike = @out = 0
  end
  def ball
    @ball += 1
    @ball = @strike = 0 if @ball == 4
  end
  def strike
    @strike += 1
    self.out if @strike == 3
  end
  def out
    @out += 1
    @out = 0 if @out == 3
    @ball = @strike = 0
  end
  def hit
    @ball = @strike = 0
  end
  def foulball
    @strike += 1 unless @strike == 2
  end
  def result
    [@out, @strike, @ball]
  end
end

ansArr = []
bso = BsoCount.new
STDIN.gets.each_char do |actionChar|
  case actionChar
  when 's' then bso.strike
  when 'b' then bso.ball
  when 'f' then bso.foulball
  when 'h' then bso.hit
  when 'p' then bso.out
  end
  ansArr.push bso.result.to_s
end
print ansArr.join ','