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  1. def caesar_cipher(str, key)
  2.   str1 = str.chars
  3.   arr = []
  4.   str1.each do |ch|
  5.     temp = ch
  6.     if /\w/ =~ temp
  7.       key.times do
  8.         if /[^zZ]/ =~ temp
  9.           temp.next!
  10.         elsif /[z]/ =~ temp
  11.           temp = 'a'
  12.         elsif /[Z]/ =~ temp
  13.           temp = 'A'
  14.         end
  15.       end
  16.     end
  17.     arr << temp
  18.   end
  19.   arr.join
  20. end
  21.  
  22. puts caesar_cipher('What a string!', 5)
  23.  
Success #stdin #stdout 0.05s 9704KB
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Standard input is empty
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Bmfy f xywnsl!
https://ideone.com/UALmt8
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
public

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