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authorJoe Zhao <ztuowen@gmail.com>2015-03-31 23:41:55 +0800
committerJoe Zhao <ztuowen@gmail.com>2015-03-31 23:41:55 +0800
commita9abc1da41b56edbed00081800382e854d6698d0 (patch)
tree5265cc1c5296768438b67299afd59bcc57c58f0c /h23.hs
parent378f6303e8860b7bbca7dea787d584a6728cebf1 (diff)
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rename to H**, +31 +32 +33 +34 +35 +36
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1 files changed, 0 insertions, 21 deletions
diff --git a/h23.hs b/h23.hs
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--- a/h23.hs
+++ /dev/null
@@ -1,21 +0,0 @@
-import System.Random
-import Data.List
-
-rnd_select :: [a] -> Int -> IO [a]
-rnd_select _ 0 = return []
-rnd_select (x:xs) n =
- do
- r <- randomRIO (0, (length xs))
- if r < n
- then do
- rest <- rnd_select xs (n-1)
- return (x : rest)
- else rnd_select xs n
-
-rnd_select' xs n = do
- gen <- getStdGen
- return $ take n [ xs !! x | x <- randomRs (0, (length xs) - 1) gen]
-
-rnd_select'' :: Int -> [a] -> [a]
-rnd_select'' n x = map (x!!) is
- where is = take n . nub $ randomRs (0, length x - 1) (mkStdGen 100)