Update add_binary.py

jiangying000 · web-flow · commit 8bcb6d45522b · 2017-05-29T13:30:34.000+08:00
diff --git a/string/add_binary.py b/string/add_binary.py
@@ -21,5 +21,6 @@ def add_binary(a, b):
             c += ord(b[j]) - zero
             j -= 1
         s = chr(c % 2 + zero) + s
+        # c //= 2 for python3
         c /= 2
     return s
