diff --git a/AlgorithmHomework4.md b/AlgorithmHomework4.md
index 13cd1e5..5b09a5e 100644
--- a/AlgorithmHomework4.md
+++ b/AlgorithmHomework4.md
@@ -100,7 +100,7 @@ Leetcode: 16，17，19
   
   - **Leetcode提交结果：**
   
-  ![image-20200326211143566](AlgorithmHomework4.assets/image-20200326211143566.png)
+    ![image-20200326211143566](AlgorithmHomework4.assets/image-20200326211143566.png)
   
   - **代码：**