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  1. import Data.Char
  2. main =
  3.   mapM_ (putStrLn . checkPalindrome)
  4.         [ "boo"
  5.         , "A man, a plan, a cat, a ham, a yak, a yam, a hat, a canal-Panama!"
  6.         , "A tin mug for a jar of gum, Nita."
  7.         , "A Toyota! Race fast, safe car! A Toyota!"
  8.         ]
  9. checkPalindrome s
  10.   | (==) =<< reverse $ map toUpper $ filter isLetter s =
  11.     show s ++ " is a palindrome."
  12.   | otherwise = show s ++ " is NOT a palindrome."
  13.  
Success #stdin #stdout 0s 6276KB
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stdin
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Standard input is empty
stdout
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"boo" is NOT a palindrome.
"A man, a plan, a cat, a ham, a yak, a yam, a hat, a canal-Panama!" is a palindrome.
"A tin mug for a jar of gum, Nita." is a palindrome.
"A Toyota! Race fast, safe car! A Toyota!" is a palindrome.
https://ideone.com/wfB47F
language:
Haskell (ghc 8.4.4)
created:
11 years ago
visibility:
public

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