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  1. def caesar_cipher(str, key)
  2. 	str1 = str.split(//)
  3. 	str1.map! do |ch|
  4. 		if (/\w/.match(ch))	
  5. 			key.times do
  6. 				if (/^[zZ]/.match(ch))
  7. 					ch.next!
  8. 				elsif (/z/.match(ch))
  9. 					ch = "a"
  10. 				else
  11. 					ch = "A"
  12. 				end
  13. 			end
  14. 		end
  15. 	end
  16. 	str1.join
  17. end
  18.  
  19. puts caesar_cipher("What a string!", 4)
Success #stdin #stdout 0.05s 9704KB
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44444444444
https://ideone.com/Stpq6n
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
public

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