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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit cb5bb5e222
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Task/Caesar-cipher/Ruby/caesar-cipher.rb Normal file
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class String
ALFABET = ("A".."Z").to_a
def caesar_cipher(num)
self.tr(ALFABET.join, ALFABET.rotate(num).join)
end
end
#demo:
encypted = "THEYBROKEOURCIPHEREVERYONECANREADTHIS".caesar_cipher(3)
decrypted = encypted.caesar_cipher(-3)