# 99 questions/Solutions/15

### From HaskellWiki

< 99 questions | Solutions(Difference between revisions)

Line 9: | Line 9: | ||

<haskell> |
<haskell> |
||

repli = flip $ concatMap . replicate |
repli = flip $ concatMap . replicate |
||

+ | </haskell> |
||

+ | |||

+ | alternatively, without using the <hask>replicate</hask> function: |
||

+ | <haskell> |
||

+ | repli :: [a] -> Int -> [a] |
||

+ | repli xs n = concatMap (take n . repeat) xs |
||

</haskell> |
</haskell> |

## Revision as of 22:28, 20 December 2010

(**) Replicate the elements of a list a given number of times.

repli :: [a] -> Int -> [a] repli xs n = concatMap (replicate n) xs

or, in Pointfree style:

repli = flip $ concatMap . replicate

replicate

repli :: [a] -> Int -> [a] repli xs n = concatMap (take n . repeat) xs