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  1. class CaesarCipher
  2.   ALFABET = ('a'..'z').to_a
  3.   CHARS = 'a-zA-Z'.freeze
  4.  
  5.   def initialize(shift)
  6.     lkey = ALFABET.rotate(shift).join
  7.     @key = lkey + lkey.upcase
  8.   end
  9.  
  10.   def encrypt(str)
  11.     str.tr(CHARS, @key)
  12.   end
  13.  
  14.   def decrypt(str)
  15.     str.tr(@key, CHARS)
  16.   end
  17. end
  18.  
  19. z = CaesarCipher.new(9)
  20. p z.encrypt('huj pizda dzigurda')
Success #stdin #stdout 0.06s 9656KB
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Standard input is empty
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"qds yrimj mirpdamj"
https://ideone.com/LTOGAp
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
secret

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