Chaocipher: Difference between revisions
m
→{{header|Haskell}}: Tidied.
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m (→{{header|Haskell}}: Tidied.) |
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<lang haskell>import Data.List (elemIndex)
chao :: Eq a => [a] -> [a] -> Bool -> [a] -> [a]▼
▲ => [a] -> [a] -> Bool -> [a] -> [a]
chao _ _ _ [] = []
chao l r plain (x : xs) = maybe [] go (elemIndex x src)
where
(src, dst)
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(x, y) = splitAt src a
encode, decode :: Bool
encode = False
decode = True
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main = do
let chaoWheels =
chao
chao "HXUCZVAMDSLKPEFJRIGTWOBNYQ" "PTLNBQDEOYSFAVZKGJRIHWXUMC"▼
"HXUCZVAMDSLKPEFJRIGTWOBNYQ"
plainText = "WELLDONEISBETTERTHANWELLSAID"
cipherText = chaoWheels encode plainText
mapM_
print plainText▼
print
print cipherText▼
print $ chaoWheels decode cipherText</lang>▼
]</lang>
{{Out}}
<pre>
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