99-haskell-problems/Problems 21-28/problem_24.hs

7 lines
186 B
Haskell

import Data.List
import System.Random
diffSelect :: Int -> Int -> IO [Int]
diffSelect n m = do
gen <- getStdGen
return $ take n [[1 .. m] !! x | x <- nub $ randomRs (0, m - 1) gen]