ランダムに2チームへ分けるスクリプト ハイアンドロー編

gistfile1.rb

#!/usr/bin/env ruby

class Member
  attr_reader :name
  def initialize(name)
    @name = name
  end
  def win?(opponent)
    raise 'should be overrided'
  end
end

class HighAndLowMember < Member
  def win?(opponent)
    begin
      now_number = rand(13)
      next_number = rand(13)
    end while now_number == next_number

    if opponent.sayHigh?(now_number)
      now_number > next_number
    else
      now_number < next_number
    end
  end
  def sayHigh?(now_number)
    [ true, false ].sample
  end
end

if $0 == __FILE__
  srand(Time.local(2012, 8, 23).to_i)

  members = ARGF.map do |name|
    HighAndLowMember.new(name.chomp)
  end

  def members.choose!
    delete_at(rand(count))
  end

  a_team = []
  b_team = []
  teams = [a_team, b_team]
  while members.count != 0
    if members.count == 1
      teams[rand(2)] << members.choose!
      break
    end

    red = members.choose!
    blue = members.choose!

    if red.win?(blue)
      a_team << red
      b_team << blue
    else
      a_team << blue
      b_team << red
    end
  end

  puts "A: #{a_team.map {|member| member.name }.join(' ')}"
  puts "B: #{b_team.map {|member| member.name }.join(' ')}"
end