diff options
Diffstat (limited to 'haskell/p4.hs')
| -rw-r--r-- | haskell/p4.hs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/haskell/p4.hs b/haskell/p4.hs new file mode 100644 index 0000000..2670bd5 --- /dev/null +++ b/haskell/p4.hs @@ -0,0 +1,7 @@ +palindrome :: (Integral a) => a -> Bool +palindrome n = let ns = show n in ns == reverse ns + +p4 :: Int +p4 = maximum $ filter palindrome [x*y | x <- [100..999], y <- [100..999]] + +main = putStrLn $ "Solution: " ++ show p4 |