ボーリングのスコア計算

gistfile1.rb

#!/usr/bin/env ruby
#! coding: utf-8

class Bowling


	def initialize()
		@pins = []
	end

	def bowl(pin)
		@pins.push(pin)

		score(@pins)
	end

	def score(pins)

		pins = Marshal.load(Marshal.dump(pins))
		pins.push(0)
		score = 0
		strike = false;
		spare = false;
		double = false;
		pins.every do |first,second|
			if (second == nil ) then
				#第10フレーム三投目
				score = score + first
				break
			else	
				score = score + first + second
			end
			if (strike) then
				score = score + first + second
			end
			if (spare||double) then
				score = score + first
			end
			if (strike && first == 10) then
				double = true;	
			else
				double = false
			end	
			if (first == 10) then
				strike = true
				spare = false
			elsif ((first + second ) == 10) then
			       strike = false
			       spare = true
			else
				strike =false 
				spare = false
			end
		end
		return score
	end

	

end

class Array
	def every(&block)
		arity = block.arity
	        return self.each(&block) if arity <= 0

		i = 0
		while i < self.size
			yield(*self[i, arity])
			i += arity
		end
		self
	end
end