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| author | Joe Zhao <ztuowen@gmail.com> | 2015-03-31 23:41:55 +0800 |
|---|---|---|
| committer | Joe Zhao <ztuowen@gmail.com> | 2015-03-31 23:41:55 +0800 |
| commit | a9abc1da41b56edbed00081800382e854d6698d0 (patch) | |
| tree | 5265cc1c5296768438b67299afd59bcc57c58f0c /H3.hs | |
| parent | 378f6303e8860b7bbca7dea787d584a6728cebf1 (diff) | |
| download | h99-a9abc1da41b56edbed00081800382e854d6698d0.tar.gz h99-a9abc1da41b56edbed00081800382e854d6698d0.tar.bz2 h99-a9abc1da41b56edbed00081800382e854d6698d0.zip | |
rename to H**, +31 +32 +33 +34 +35 +36
Diffstat (limited to 'H3.hs')
| -rw-r--r-- | H3.hs | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -0,0 +1,7 @@ +elementAt :: [a] -> Integer -> Maybe a + +elementAt [] _ = Nothing +elementAt (x:xs) 1 = Just x +elementAt (x:xs) n + | n>1 = elementAt xs (n-1) + | otherwise = Nothing |