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authorknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-12-19 20:42:50 +0000
committerknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-12-19 20:42:50 +0000
commit63406c49712703ca63d610e75bba4ed0078c0f16 (patch)
treedf1d1c9084747f774a22748f755ae7aea891e4c2 /sample/fact.rb
parent354af9da36eaeec70d4fdaddab78a8ecb11101a0 (diff)
Improve.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3184 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'sample/fact.rb')
-rw-r--r--sample/fact.rb5
1 files changed, 2 insertions, 3 deletions
diff --git a/sample/fact.rb b/sample/fact.rb
index 1462a69..d8147a4 100644
--- a/sample/fact.rb
+++ b/sample/fact.rb
@@ -1,9 +1,8 @@
def fact(n)
return 1 if n == 0
f = 1
- while n>0
- f *= n
- n -= 1
+ n.downto(1) do |i|
+ f *= i
end
return f
end