diff --git a/problems/0707.设计链表.md b/problems/0707.设计链表.md
index dd305d39..b82a645e 100644
--- a/problems/0707.设计链表.md
+++ b/problems/0707.设计链表.md
@@ -233,7 +233,7 @@ void myLinkedListDeleteAtIndex(MyLinkedList* obj, int index) {
         MyLinkedList *tmp = obj->next;
         if (tmp != NULL){
             obj->next = tmp->next;
-            free(tmp);
+            free(tmp);     
         }
         return;
     }
@@ -263,21 +263,20 @@ void myLinkedListFree(MyLinkedList* obj) {
 }
 
 /**
-
  * Your MyLinkedList struct will be instantiated and called as such:
  * MyLinkedList* obj = myLinkedListCreate();
  * int param_1 = myLinkedListGet(obj, index);
-
+ 
  * myLinkedListAddAtHead(obj, val);
-
+ 
  * myLinkedListAddAtTail(obj, val);
-
+ 
  * myLinkedListAddAtIndex(obj, index, val);
-
+ 
  * myLinkedListDeleteAtIndex(obj, index);
-
+ 
  * myLinkedListFree(obj);
- */
+*/
 ```
 
 Java：