Print all 26 iterations of Carsar's Chiper for a string

carsar.rb

# some credit: https://gist.github.com/matugm/db363c7131e6af27716c
# Print all 26 iterations of Carsar's Chiper for a string

def caesar_cipher(string, shift = 1)
  alphabet  = Array('a'..'z')
  non_caps  = Hash[alphabet.zip(alphabet.rotate(-shift))]
  
  alphabet = Array('A'..'Z')
  caps     = Hash[alphabet.zip(alphabet.rotate(-shift))]
  
  encrypter = non_caps.merge(caps)
  
  string.chars.map { |c| encrypter.fetch(c, c) }.join
end

def crack str
  (1..26).each do |n|
    puts "#{'%2d:'%n} #{caesar_cipher str, n}"
  end
end

# crack "xc bpzxcv iwt exirw ndj"
#  1: wb aoywbu hvs dwhqv mci
#  2: va znxvat gur cvgpu lbh
#  3: uz ymwuzs ftq bufot kag
#  4: ty xlvtyr esp atens jzf
#  5: sx wkusxq dro zsdmr iye
#  6: rw vjtrwp cqn yrclq hxd
#  7: qv uisqvo bpm xqbkp gwc
#  8: pu thrpun aol wpajo fvb
#  9: ot sgqotm znk vozin eua
# 10: ns rfpnsl ymj unyhm dtz
# 11: mr qeomrk xli tmxgl csy
# 12: lq pdnlqj wkh slwfk brx
# 13: kp ocmkpi vjg rkvej aqw
# 14: jo nbljoh uif qjudi zpv
# 15: in making the pitch you ***
# 16: hm lzjhmf sgd ohsbg xnt
# 17: gl kyigle rfc ngraf wms
# 18: fk jxhfkd qeb mfqze vlr
# 19: ej iwgejc pda lepyd ukq
# 20: di hvfdib ocz kdoxc tjp
# 21: ch guecha nby jcnwb sio
# 22: bg ftdbgz max ibmva rhn
# 23: af escafy lzw haluz qgm
# 24: ze drbzex kyv gzkty pfl
# 25: yd cqaydw jxu fyjsx oek
# 26: xc bpzxcv iwt exirw ndj