Update add-binary.py

kamyu104 · kamyu104 · commit ec3becf5549a · 2015-09-23T22:29:37.000+08:00
diff --git a/Python/add-binary.py b/Python/add-binary.py
@@ -18,9 +18,9 @@ def addBinary(self, a, b):
         for i in xrange(max(len_a, len_b)):
             val = carry
             if i < len_a:
-                sum += int(a[-(i + 1)])
+                val += int(a[-(i + 1)])
             if i < len_b: 
-                sum += int(b[-(i + 1)])
+                val += int(b[-(i + 1)])
             carry, val = val / 2, val % 2
             result = "{0}{1}".format(val, result)
         if carry == 1:
