gistfile1.rb

#coding: utf-8

class Te
  attr_accessor :te_num
  def initialize num=nil
    self.te_num = num ? num % 3 : rand(3)
  end

  def > te
    (te_num + 1) % 3 == te.te_num
  end

  def < te
    te > self
  end

  def == te
    te_num == te.te_num
  end

  def to_s
    %w(グー チョキ パー)[te_num]
  end

  def self.all
    3.times.map{|te_num|Te.new te_num}
  end
end

results = []

3.times do
  pc_te = Te.all.sample
  my_te = Te.new gets.to_i
  puts "人間の手は「#{my_te}」、コンピュータの手は「#{pc_te}」"

  if my_te < pc_te
    result = 'コンピュータの勝ち'
  elsif my_te > pc_te
    result = '人間の勝ち'
  else
    result = 'あいこ'
  end

  puts "勝敗結果は・・・「#{result}」です。"
  results << result
end

puts "******************************************"

results.each.with_index(1) do |result, count|
  puts "#{count}回戦の結果は・・・#{result}"
end