Update combination_sum.py

yingl · web-flow · commit 78464d799baf · 2017-04-25T18:42:57.000+08:00
diff --git a/combination_sum.py b/combination_sum.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+# coding: utf-8
 
 class Solution:
     # @param candidates, a list of integers
@@ -30,4 +30,6 @@ def _combinationSum(self, candidates, comb, i, _sum):
                         comb.append(candidates[j])
                         self._combinationSum(candidates, comb, j, _sum + prev)
                         comb.pop()
-                    j += 1
+                    j += 1
+
+# medium: http://lintcode.com/zh-cn/problem/combination-sum/
