diff --git a/docs/essential-content-for-interview/MostCommonJavaInterviewQuestions/第一周（2018-8-7）.md b/docs/essential-content-for-interview/MostCommonJavaInterviewQuestions/第一周（2018-8-7）.md
index a82c657b..595a73e2 100644
--- a/docs/essential-content-for-interview/MostCommonJavaInterviewQuestions/第一周（2018-8-7）.md
+++ b/docs/essential-content-for-interview/MostCommonJavaInterviewQuestions/第一周（2018-8-7）.md
@@ -247,7 +247,5 @@ hashCode() 的作用是获取哈希码，也称为散列码；它实际上是返
 
 [https://www.cnblogs.com/skywang12345/p/3324958.html](https://www.cnblogs.com/skywang12345/p/3324958.html)
 
-[https://www.cnblogs.com/skywang12345/p/3324958.html](https://www.cnblogs.com/skywang12345/p/3324958.html)
-
 [https://www.cnblogs.com/Eason-S/p/5524837.html](https://www.cnblogs.com/Eason-S/p/5524837.html)