From: Ramakrishnan Muthukrishnan <vu3rdd@gmail.com>
Date: Tue, 4 May 2010 14:47:28 +0000 (+0530)
Subject: solution to 1.30
X-Git-Url: https://git.rkrishnan.org/pf/content/%22news.html/index.php?a=commitdiff_plain;h=bad1100f70d0b0db37f5966ddd1034aafc4104e2;p=sicp.git

solution to 1.30
---

diff --git a/src/sicp/ex1_30.clj b/src/sicp/ex1_30.clj
new file mode 100644
index 0000000..e447a0a
--- /dev/null
+++ b/src/sicp/ex1_30.clj
@@ -0,0 +1,10 @@
+(ns sicp.ex1_30
+  (:use [sicp utils]
+	[clojure.contrib test-is]))
+
+(defn sum [term a next b]
+  (letfn [(iter-fn [a result]
+		   (if (> a b)
+		     result
+		     (iter-fn (next a) (+ result (term a)))))]
+    (iter-fn a 0)))
\ No newline at end of file