From 9db0008777cc4cd9f07e14a3458e3d903e3cc4f6 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Mon, 29 May 2017 13:29:11 -0400
Subject: finish vol 4

---
 31-41/39.hs | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 31-41/39.hs

(limited to '31-41/39.hs')

diff --git a/31-41/39.hs b/31-41/39.hs
new file mode 100644
index 0000000..68909d7
--- /dev/null
+++ b/31-41/39.hs
@@ -0,0 +1,5 @@
+primesR :: Int -> Int -> [Int]
+
+primesR l r = takeWhile (<= r) $ dropWhile (< l) primes
+    where primes = filterPrime[2..]
+          filterPrime (p:xs) = p:filterPrime [x | x <- xs, x `mod` p /= 0]
-- 
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