diff options
| author | Determinant <ted.sybil@gmail.com> | 2017-05-29 01:11:20 -0400 |
|---|---|---|
| committer | Determinant <ted.sybil@gmail.com> | 2017-05-29 01:11:20 -0400 |
| commit | fa1bf6c2eac1c9f7969ff29504c9f51b9ba48008 (patch) | |
| tree | 3ff5689d025100431adac277d0411ca88681166e /21-28/26.hs | |
| parent | 9c608c32a9387a1dd1cb045e5822733ad181ccf8 (diff) | |
finish vol 3
Diffstat (limited to '21-28/26.hs')
| -rw-r--r-- | 21-28/26.hs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/21-28/26.hs b/21-28/26.hs new file mode 100644 index 0000000..cbc469b --- /dev/null +++ b/21-28/26.hs @@ -0,0 +1,5 @@ +combinations :: Int -> [a] -> [[a]] + +combinations 0 _ = [[]] +combinations _ [] = [] +combinations k (x:xs) = [x:t | t <- combinations (k - 1) xs] ++ combinations k xs |