diff --git a/C++/chapLinearList.tex b/C++/chapLinearList.tex
index fed9cff2..d5a020f3 100644
--- a/C++/chapLinearList.tex
+++ b/C++/chapLinearList.tex
@@ -1537,7 +1537,7 @@ \subsubsection{描述}
 
 
 \subsubsection{分析}
-格雷码(Gray Code)的定义请参考 \myurl{http://en.wikipedia.org/wiki/Gray_code}。
+格雷码(Gray Code)的定义请参考 \myurl{http://en.wikipedia.org/wiki/Gray_code}
 
 \textbf{自然二进制码转换为格雷码：$g_0=b_0, g_i=b_i \oplus b_{i-1}$}
 
diff --git a/C++/leetcode-cpp.pdf b/C++/leetcode-cpp.pdf
index e7e55094..829ff69c 100644
Binary files a/C++/leetcode-cpp.pdf and b/C++/leetcode-cpp.pdf differ