cellautomaton.rb

# -*- coding: utf-8 -*-
def getnewline(line, rule)
  (0..(line.size-1)).map { |i|
    rule[line[i-1..i+1].join.to_i(2)] # 端がおかしくなりそう
  }
end

token = ARGV.first.to_i || raise

rule = (0..7).map{|i| token[i]}

line = Array.new(80, 0)
line[40] = 1

40.times do
  puts line.map{|i| [' ', '*'][i]}.join(' ') + '|'
  line = getnewline(line, rule)
end