Re: Ruby Quiz - Challenge #8 - Base32 Alphabet - Convert the Super "Sekretoooo" 240-Bit CryptoKitties Genome to Kai Notation - Annipurrsary!

Gerald Bauer wrote:
> Challenge #8 - Base32 Alphabet - Convert the Super "Sekretoooo"
> 240-Bit CryptoKitties Genome to Kai Notation - Annipurrsary!

$ ruby -v lib/008.rb
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
Run options: --seed 55765
# Running:
..
Finished in 0.001806s, 1107.3523 runs/s, 1107.3523 assertions/s.
2 runs, 2 assertions, 0 failures, 0 errors, 0 skips

$ cat lib/008.rb
require_relative '../008/test.rb'

class RubyQuizTest
  Encode = [(1..9),('a'..'k'),('l'..'x')].map(&:to_a).inject(&:+)

  # benchmark
  # 5_000.times: 0.462325   0.001169   0.463494 (  0.504119)
  # 50000.times: 4.584615   0.003136   4.587751 (  4.840367)
  # def kai_encode(num)
  #   ('%0240b' % num)
  #   .chars
  #   .each_slice(5)
  #   .map(&:join)
  #   .map{|n| n.to_i(2)}
  #   .map{|n| Encode[n]}
  #   .join
  # end

  # benchmark
  # 5_000.times: 0.148790   0.000000   0.148790 (  0.151831)
  # 50000.times: 1.490005   0.000987   1.490992 (  1.581884)
  def kai_encode(num)
    num
    .to_s(2)
    .rjust(240, '0')
    .yield_self{|bs| (0..235).step(5).map{|i| bs[i,5]}}
    .map{|n| Encode[n.to_i(2)]}
    .join
  end

  def kai_fmt(kai)
    kai
    .chars
    .each_slice(4)
    .map(&:join)
    .join(' ')
  end
end

RubyQuizTest.new('fjc')


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