From 95eaf22587c148a14f7fdd2455de99881a353884 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Tue, 5 Jul 2011 01:08:55 +0400
Subject: Added Ruby

---
 gcd.rb | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 gcd.rb

diff --git a/gcd.rb b/gcd.rb
new file mode 100755
index 0000000..0eefe8a
--- /dev/null
+++ b/gcd.rb
@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+def gcd2 a, b
+    if b == 0
+        a
+    else
+        gcd2 b, a % b
+    end
+end
+
+# http://railspikes.com/2008/8/11/understanding-map-and-reduce
+def gcdn ns
+    ns.reduce{ |a, b| gcd2 a, b }
+end
+
+puts gcdn ARGV.collect{|s| s.to_i}
+
-- 
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