Puzzling: Hey, they are all under 4

semi_solution_notes.rb

#
# http://puzzling.stackexchange.com/questions/32438/hey-they-are-all-under-4
#

require 'active_support/core_ext/array'

c = "222123013102101232202311300000113113"

def decode(base,digits)
  digits.reverse.inject([0,[]]) {|a,e| [a[0]+1, a[1] + [e*base**a[0]]]}[1].inject(0, :+)
end



from binary string
.chars.map(&:to_i).in_groups_of(8).map{|x| decode(2,x)}


shift c22 (like rot 13)
(-17..17).each{|sh| p c22.chars.map{|x| (x.ord + sh).chr}.join }




decode(4, c.chars.map(&:to_i)).to_s.chars.in_groups_of(2).map{|x| x.join.to_i(16).chr}.join

c22 = c2.chars.map {|x| (x == "." ? 0 : 1).to_s}.in_groups_of(8).map{|x| x.join.to_i(2).chr}.join