Update climbing_stairs.py

yingl · web-flow · commit 7b54c93e5f79 · 2017-04-25T14:08:13.000+08:00
diff --git a/climbing_stairs.py b/climbing_stairs.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+# coding: utf-8
 
 class Solution:
     """
@@ -17,4 +17,6 @@ def climbStairs(self, n):
             ret = f_1 + f_2
             f_1 = f_2
             f_2 = ret
-        return ret
+        return ret
+
+# easy: http://lintcode.com/problem/climbing-stairs
