Initial revision

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

sample/sieve.rb

@@ -0,0 +1,18 @@
+# sieve of Eratosthenes
+sieve = []
+if ! max = ARGV.shift; max = 100; end
+max = max.to_i
+
+print "1"
+for i in 2 .. max 
+  begin
+    for d in sieve
+      fail if i % d == 0
+    end
+    print ", "
+    print i
+    sieve.push(i)
+  rescue
+  end
+end
+print "\n"