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-rw-r--r--sample/sieve.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/sample/sieve.rb b/sample/sieve.rb
index 0228243..192a586 100644
--- a/sample/sieve.rb
+++ b/sample/sieve.rb
@@ -1,3 +1,4 @@
+# sieve of Eratosthenes
sieve = []
unless max = $ARGV.shift; max = 100; end
max = max.to_i