From a408df73391a5dcd97f9ba19f8a1be580c695f95 Mon Sep 17 00:00:00 2001
From: kamyu <kamyu104@users.noreply.github.com>
Date: Fri, 19 Feb 2016 21:32:46 +0800
Subject: [PATCH] Update add-binary.cpp

---
 C++/add-binary.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/C++/add-binary.cpp b/C++/add-binary.cpp
index 1c3591b60..7a273e67d 100644
--- a/C++/add-binary.cpp
+++ b/C++/add-binary.cpp
@@ -25,6 +25,7 @@ class Solution {
     }
 };
 
+// Iterator solution.
 class Solution2 {
 public:
     string addBinary(string a, string b) {