diff --git a/Project2.vcxproj.filters b/Project2.vcxproj.filters
index a28af6f..45faa74 100644
--- a/Project2.vcxproj.filters
+++ b/Project2.vcxproj.filters
@@ -24,15 +24,15 @@
     <ClCompile Include="linked_list_stack.c">
       <Filter>源文件</Filter>
     </ClCompile>
-    <ClCompile Include="sq_list.c">
-      <Filter>源文件</Filter>
-    </ClCompile>
     <ClCompile Include="array_stack.c">
       <Filter>源文件</Filter>
     </ClCompile>
     <ClCompile Include="array_queue.c">
       <Filter>源文件</Filter>
     </ClCompile>
+    <ClCompile Include="sq_list.c">
+      <Filter>源文件</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="sq_list.h">
diff --git a/Project2/Debug/Project2.exe.recipe b/Project2/Debug/Project2.exe.recipe
index 5058dca..03245a5 100644
--- a/Project2/Debug/Project2.exe.recipe
+++ b/Project2/Debug/Project2.exe.recipe
@@ -2,7 +2,7 @@
 <Project>
   <ProjectOutputs>
     <ProjectOutput>
-      <FullPath>C:\code\lencode\Project2\Debug\Project2.exe</FullPath>
+      <FullPath>C:\code\lencode\C_DS_Algo\Debug\Project2.exe</FullPath>
     </ProjectOutput>
   </ProjectOutputs>
   <ContentFiles />
diff --git a/Project2/Debug/Project2.log b/Project2/Debug/Project2.log
index 4bc6b00..abd2742 100644
--- a/Project2/Debug/Project2.log
+++ b/Project2/Debug/Project2.log
@@ -1,25 +1,25 @@
   array_queue.c
-C:\code\lencode\Project2\array_queue.c(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
-C:\code\lencode\Project2\array_queue.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
+  array_stack.c
+C:\code\lencode\C_DS_Algo\array_queue.c(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
+C:\code\lencode\C_DS_Algo\array_queue.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
   (编译源文件“array_queue.c”)
   
-C:\code\lencode\Project2\array_queue.c(22,5): warning C4013: “memset”未定义；假设外部返回 int
-  array_stack.c
-C:\code\lencode\Project2\array_stack.c(12,5): warning C4013: “memset”未定义；假设外部返回 int
+C:\code\lencode\C_DS_Algo\array_queue.c(22,5): warning C4013: “memset”未定义；假设外部返回 int
+C:\code\lencode\C_DS_Algo\array_stack.c(12,5): warning C4013: “memset”未定义；假设外部返回 int
   linked_list.c
   linked_list_stack.c
-C:\code\lencode\Project2\linked_list_stack.c(26,3): warning C4098: “push_stack_linked”:“void”函数返回值
+C:\code\lencode\C_DS_Algo\linked_list_stack.c(26,3): warning C4098: “push_stack_linked”:“void”函数返回值
   main.c
-C:\code\lencode\Project2\array_queue.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
+C:\code\lencode\C_DS_Algo\array_queue.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失
   (编译源文件“main.c”)
   
-C:\code\lencode\Project2\main.c(39,22): warning C4013: “init_array_queue”未定义；假设外部返回 int
-C:\code\lencode\Project2\main.c(39,18): warning C4047: “初始化”:“array_queue *”与“int”的间接级别不同
+C:\code\lencode\C_DS_Algo\main.c(39,22): warning C4013: “init_array_queue”未定义；假设外部返回 int
+C:\code\lencode\C_DS_Algo\main.c(39,18): warning C4047: “初始化”:“array_queue *”与“int”的间接级别不同
   sq_list.c
-C:\code\lencode\Project2\sq_list.c(102,9): warning C4033: “locate_list”必须返回值
-C:\code\lencode\Project2\sq_list.c(112,9): warning C4033: “locate_list”必须返回值
-C:\code\lencode\Project2\sq_list.c(166,34): warning C4047: “函数”:“int”与“sq_list *”的间接级别不同
-C:\code\lencode\Project2\sq_list.c(166,34): warning C4024: “locate_list”: 形参和实参 2 的类型不同
+C:\code\lencode\C_DS_Algo\sq_list.c(107,9): warning C4033: “locate_list”必须返回值
+C:\code\lencode\C_DS_Algo\sq_list.c(117,9): warning C4033: “locate_list”必须返回值
+C:\code\lencode\C_DS_Algo\sq_list.c(171,34): warning C4047: “函数”:“int”与“sq_list *”的间接级别不同
+C:\code\lencode\C_DS_Algo\sq_list.c(171,34): warning C4024: “locate_list”: 形参和实参 2 的类型不同
   正在生成代码...
-C:\code\lencode\Project2\sq_list.c(116,1): warning C4715: “locate_list”: 不是所有的控件路径都返回值
-  Project2.vcxproj -> C:\code\lencode\Project2\Debug\Project2.exe
+C:\code\lencode\C_DS_Algo\sq_list.c(121,1): warning C4715: “locate_list”: 不是所有的控件路径都返回值
+  Project2.vcxproj -> C:\code\lencode\C_DS_Algo\Debug\Project2.exe
diff --git a/Project2/Debug/Project2.tlog/CL.command.1.tlog b/Project2/Debug/Project2.tlog/CL.command.1.tlog
index d02a696..feca5c7 100644
Binary files a/Project2/Debug/Project2.tlog/CL.command.1.tlog and b/Project2/Debug/Project2.tlog/CL.command.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/CL.read.1.tlog b/Project2/Debug/Project2.tlog/CL.read.1.tlog
index a215697..84779e6 100644
Binary files a/Project2/Debug/Project2.tlog/CL.read.1.tlog and b/Project2/Debug/Project2.tlog/CL.read.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/CL.write.1.tlog b/Project2/Debug/Project2.tlog/CL.write.1.tlog
index 864d760..fa359a3 100644
Binary files a/Project2/Debug/Project2.tlog/CL.write.1.tlog and b/Project2/Debug/Project2.tlog/CL.write.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/Cl.items.tlog b/Project2/Debug/Project2.tlog/Cl.items.tlog
index 38e0c90..8b807da 100644
--- a/Project2/Debug/Project2.tlog/Cl.items.tlog
+++ b/Project2/Debug/Project2.tlog/Cl.items.tlog
@@ -1,6 +1,6 @@
-C:\code\lencode\Project2\array_queue.c;C:\code\lencode\Project2\Project2\Debug\array_queue.obj
-C:\code\lencode\Project2\array_stack.c;C:\code\lencode\Project2\Project2\Debug\array_stack.obj
-C:\code\lencode\Project2\linked_list.c;C:\code\lencode\Project2\Project2\Debug\linked_list.obj
-C:\code\lencode\Project2\linked_list_stack.c;C:\code\lencode\Project2\Project2\Debug\linked_list_stack.obj
-C:\code\lencode\Project2\main.c;C:\code\lencode\Project2\Project2\Debug\main.obj
-C:\code\lencode\Project2\sq_list.c;C:\code\lencode\Project2\Project2\Debug\sq_list.obj
+C:\code\lencode\C_DS_Algo\array_queue.c;C:\code\lencode\C_DS_Algo\Project2\Debug\array_queue.obj
+C:\code\lencode\C_DS_Algo\array_stack.c;C:\code\lencode\C_DS_Algo\Project2\Debug\array_stack.obj
+C:\code\lencode\C_DS_Algo\linked_list.c;C:\code\lencode\C_DS_Algo\Project2\Debug\linked_list.obj
+C:\code\lencode\C_DS_Algo\linked_list_stack.c;C:\code\lencode\C_DS_Algo\Project2\Debug\linked_list_stack.obj
+C:\code\lencode\C_DS_Algo\main.c;C:\code\lencode\C_DS_Algo\Project2\Debug\main.obj
+C:\code\lencode\C_DS_Algo\sq_list.c;C:\code\lencode\C_DS_Algo\Project2\Debug\sq_list.obj
diff --git a/Project2/Debug/Project2.tlog/Project2.lastbuildstate b/Project2/Debug/Project2.tlog/Project2.lastbuildstate
index 9743022..77eb2f4 100644
--- a/Project2/Debug/Project2.tlog/Project2.lastbuildstate
+++ b/Project2/Debug/Project2.tlog/Project2.lastbuildstate
@@ -1,2 +1,2 @@
 PlatformToolSet=v143:VCToolArchitecture=Native32Bit:VCToolsVersion=14.43.34808:TargetPlatformVersion=10.0.26100.0:
-Debug|Win32|C:\code\lencode\Project2\|
+Debug|Win32|C:\code\lencode\C_DS_Algo\|
diff --git a/Project2/Debug/Project2.tlog/link.command.1.tlog b/Project2/Debug/Project2.tlog/link.command.1.tlog
index c25822a..34d135a 100644
Binary files a/Project2/Debug/Project2.tlog/link.command.1.tlog and b/Project2/Debug/Project2.tlog/link.command.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/link.read.1.tlog b/Project2/Debug/Project2.tlog/link.read.1.tlog
index 97bf774..75510a2 100644
Binary files a/Project2/Debug/Project2.tlog/link.read.1.tlog and b/Project2/Debug/Project2.tlog/link.read.1.tlog differ
diff --git a/Project2/Debug/Project2.tlog/link.secondary.1.tlog b/Project2/Debug/Project2.tlog/link.secondary.1.tlog
index 3d021ab..ba1f9da 100644
--- a/Project2/Debug/Project2.tlog/link.secondary.1.tlog
+++ b/Project2/Debug/Project2.tlog/link.secondary.1.tlog
@@ -1,2 +1,2 @@
-^C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\ARRAY_QUEUE.OBJ|C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\ARRAY_STACK.OBJ|C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\LINKED_LIST.OBJ|C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\LINKED_LIST_STACK.OBJ|C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\MAIN.OBJ|C:\CODE\LENCODE\PROJECT2\PROJECT2\DEBUG\SQ_LIST.OBJ
-C:\code\lencode\Project2\Project2\Debug\Project2.ilk
+^C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\ARRAY_QUEUE.OBJ|C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\ARRAY_STACK.OBJ|C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\LINKED_LIST.OBJ|C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\LINKED_LIST_STACK.OBJ|C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\MAIN.OBJ|C:\CODE\LENCODE\C_DS_ALGO\PROJECT2\DEBUG\SQ_LIST.OBJ
+C:\code\lencode\C_DS_Algo\Project2\Debug\Project2.ilk
diff --git a/Project2/Debug/Project2.tlog/link.write.1.tlog b/Project2/Debug/Project2.tlog/link.write.1.tlog
index b07d1d1..9403189 100644
Binary files a/Project2/Debug/Project2.tlog/link.write.1.tlog and b/Project2/Debug/Project2.tlog/link.write.1.tlog differ
diff --git a/linked_list.c b/linked_list.c
index 11ea29e..c53bc05 100644
--- a/linked_list.c
+++ b/linked_list.c
@@ -76,4 +76,30 @@ void print_node_list(node* head)
 		head = head->next;
 		printf("%d ", head->value);
 	}
+}
+
+// �����������
+int get_node_list(node* head)
+{
+	int i = 0;
+	while (head->next != NULL)
+	{
+		head = head->next;
+		i++;
+	}
+	printf("��������Ϊ%d\n", i);
+	return i;
+}
+
+
+// ���Ԫ��
+elem_type get_node_value(node* head,int pos,elem_type value)
+{
+	int i = 1;
+	while (i <= pos)
+	{
+		head = head->next;
+		i++;
+	}
+	return head->value;
 }
\ No newline at end of file
diff --git a/linked_list.h b/linked_list.h
index d095e8a..9419e19 100644
--- a/linked_list.h
+++ b/linked_list.h
@@ -36,5 +36,11 @@ address_node *find_node(node* head, elem_type value);
 // ��ӡ����
 void print_node_list(node* head);
 
+// get length of linked list
+int get_node_list(node* head);
+
+// ���
+elem_type get_node_value(node* head,int pos,elem_type value);
+
 #endif