Update word-ladder-ii.py

kamyu104 · kamyu104 · commit fde87b16ea29 · 2015-06-05T13:08:15.000+08:00
diff --git a/Python/word-ladder-ii.py b/Python/word-ladder-ii.py
@@ -37,7 +37,7 @@ def findLadders(self, start, end, dict):
             for word in cur:
                 visited.add(word)
                 
-            next = set([])
+            next = set()
             for word in cur:
                 for i in xrange(len(word)):
                     for j in 'abcdefghijklmnopqrstuvwxyz':
