Best of Ruby Quiz 之四 Animal Quiz之我的答案
终于完全靠我自己的思考,做出来一个quiz,就是第四个Animal Quiz,代码贴一下,笔记稍后放出。
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class AnimalQuiz
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@@animals = Array.new # 用来保存问题和答案的数组,每个数组元素又是一个数组,
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# [["cat", "Is it cute?", "y"], ["dog", "does it bark?","y"] ]
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def AnimalQuiz.add_animal(animal)
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@@animals.push(animal)
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end
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def self.do_quiz
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match_animal = ""
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@@animals.each do |animal|
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puts animal[1] # 提问题
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s = gets
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if s.chomp! == animal[2] # 答案是否与数组中给定的答案匹配
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puts "is it " + animal[0] + "?" # 匹配的情况,询问是否是当前数组元素中的动物
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if get_yes_or_no=="y" # 读取输入,是当前数组元素中的动物
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match_animal = animal[0] # 取出动物
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break
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end
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else # 答案不匹配,向下一个数组元素中的问题进发
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next
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end
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end
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if match_animal.empty? # 循环完毕,没有找到答案
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puts "you win, what animal do u think of?" # 向数组中累积问题
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user_animal = Array.new
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user_animal << gets.chomp!
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puts "give me a question"
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user_animal << gets.chomp!
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puts "what is your answer to this question?(y or n)"
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user_animal << gets.chomp!
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add_animal(user_animal)
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puts "thanks"
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else
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puts "i win," # 找到动物
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end
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end
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def self.go
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puts "Think of an animal
"
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puts "is it an elephant?" # 对大象特殊处理
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if get_yes_or_no != "y" # 不是大象,开始处理
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do_quiz
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end
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while wanna_play_again? =="y" # 是大象,询问是否想继续
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puts "Think of an animal
" # 继续,进行后续quiz
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do_quiz
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end
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end
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private
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def self.wanna_play_again?
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puts "wanna play again?"
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get_yes_or_no
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end
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def self.get_yes_or_no # 获取用户输入
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s =gets
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while ((s=~/^\s*y\s*$/).nil? && (s=~/^\s*n\s*$/).nil? )
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puts "please input 'y' or 'n'"
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s = gets
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end
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s.chomp!
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end
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end
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AnimalQuiz.go
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