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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Caesar-cipher/Crystal/caesar-cipher.crystal Normal file
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class String
ALPHABET = ("A".."Z").to_a
def caesar_cipher(num)
self.tr(ALPHABET.join, ALPHABET.rotate(num).join)
end
end
# demo
encrypted = "THEQUICKBROWNFOXJUMPSOVERTHELAZYDOG".caesar_cipher(5)
decrypted = encrypted.caesar_cipher(-5)