diff --git a/list/list.c b/list/list.c
index 9bcf50f..91bb75c 100644
--- a/list/list.c
+++ b/list/list.c
@@ -9,6 +9,7 @@
 
 int main(int argc, char **argv){	
 	rand_init();
+    safeMode(1);
 	List *t_list = init_list();
 	
 	/*for(int i = 0; i < 9; i++){
@@ -25,20 +26,19 @@ int main(int argc, char **argv){
     
     for(int i = 0; i < 12; i++){
         insertInHead(t_list, nodeWithInt(i));
+        insertInTail(t_list, nodeWithInt(i));
     }
     
     
-    Node *t_node = nodeWithComplex();
-    addIntForComplex(t_node, 32);
-    addIntForComplex(t_node, 64);
-    insertInTail(t_list, t_node);
-    insertInTail(t_list, nodeWithDouble(32.5));
-    insertInTail(t_list, nodeWithString("There"));
-    printNodeInfo(findByString(t_list, "There"), 0);
+   
     printListInfo(t_list,0);
     printList(t_list);
+    List *m_list;
+    m_list = m_findByInt(t_list, 5);
+    printList(m_list);
     printf("\n");
-    releaseList(t_list);
+    
+    releaseAll();
 	
 	return 0;
 }
diff --git a/list/list.h b/list/list.h
index 180081a..3081af7 100644
--- a/list/list.h
+++ b/list/list.h
@@ -44,6 +44,9 @@ int insertInTail(List *p_list, Node *p_node);
 /*交换函数*/
 int exchangeLocation(Node *p_node,Node *t_node);
 
+/*复制函数*/
+Node *copyNode(Node *);
+
 /*移除函数*/
 int removeById(List *p_list, unsigned long id);
 int removeByNode(List *p_list, Node *p_node);
@@ -61,6 +64,7 @@ int releaseListForSingle(List *p_list);//单独释放List
 int releaseNode(Node *p_node);//释放Node
 
 int isListEmpty(List *p_list);//判断List是否为空
+List *copyList(List *p_list);//复制链表
 
 /*有关安全模式的变量*/
 int if_safeMode = 0;
@@ -397,23 +401,23 @@ Node *findByValue(List *p_list, const char *type, const void *value){
         }
 		if(!strcmp(type,"int")){
 			if(*((int *)p_node->value) == *((int *)value)){
-				return p_node;
+				return copyNode(p_node);
 			}
 		}
 		else if(!strcmp(type,"double")){
 			if(*((double *)p_node->value) == *((double *)value)){
-				return p_node;
+				return copyNode(p_node);
 			}
 		}
 		else if(!strcmp	(type,"string")){
 			if(!strcmp((char *)p_node->value,(char *)value))
 			{
-				return p_node;
+				return copyNode(p_node);
 			}
 		}
 		else if(!strcmp(type,"pointer")){
 			if(p_node->value == value){
-				return p_node;
+				return copyNode(p_node);
 			}
 		}
 		
@@ -427,34 +431,33 @@ List *mply_findByValue(List *p_list, const char *type, const void *value){
 	List *f_list = init_list();
 	Node *p_node = p_list->head;
 	while(p_node != NULL){
-		if(strcmp(p_node->type,type)) continue;
+        if(strcmp(p_node->type,type)){
+            p_node = p_node->next;
+            continue;
+        }
 		if(!strcmp(type,"int")){
 			if(*((int *)p_node->value) == *((int *)value)){
-				Node *f_node = init_node();
-				initMallocValue(f_node,"pointer",(void *)p_node);
+                Node *f_node = copyNode(p_node);
 				insertInTail(f_list,f_node);
 			}
 		}
 		else if(!strcmp(type,"double")){
 			if(*((double *)p_node->value) == *((double *)value)){
-				Node *f_node = init_node();
-				initMallocValue(f_node,"pointer",(void *)p_node);
-				insertInTail(f_list,f_node);
+                Node *f_node = copyNode(p_node);
+                insertInTail(f_list,f_node);
 			}
 		}
 		else if(!strcmp	(type,"string")){
 			if(!strcmp((char *)p_node->value,(char *)value))
 			{
-				Node *f_node = init_node();
-				initMallocValue(f_node,"pointer",(void *)p_node);
-				insertInTail(f_list,f_node);
+                Node *f_node = copyNode(p_node);
+                insertInTail(f_list,f_node);
 			}
 		}
 		else if(!strcmp(type,"pointer")){
 			if(p_node->value == value){
-				Node *f_node = init_node();
-				initMallocValue(f_node,"pointer",(void *)p_node);
-				insertInTail(f_list,f_node);
+                Node *f_node = copyNode(p_node);
+                insertInTail(f_list,f_node);
 			}
 		}
 		
@@ -484,4 +487,29 @@ int exchangeLocation(Node *p_node,Node *t_node){
     return 0;
 }
 
+Node *copyNode(Node *p_node){
+    Node *t_node = init_node();
+    t_node->id = p_node->id;
+    t_node->last = p_node->last;
+    t_node->next = p_node->next;
+    t_node->if_malloc = p_node->if_malloc;
+    t_node->type = p_node->type;
+    t_node->value = p_node->value;
+    return t_node;
+}
+
+List *copyList(List *p_list){
+    List *t_list = init_list();
+    t_list->head = p_list->head;
+    t_list->tail = p_list->tail;
+    t_list->id = p_list->id;
+    Node *p_node = p_list->head;
+    while(p_node != NULL){
+        Node *t_node = copyNode(p_node);
+        insertInTail(t_list, t_node);
+        p_node = p_node->next;
+    }
+    return t_list;
+}
+
 #endif
diff --git a/list/list_expand.h b/list/list_expand.h
index d75c22d..388756d 100644
--- a/list/list_expand.h
+++ b/list/list_expand.h
@@ -22,6 +22,11 @@ Node *findByDouble(List *, double);//依照特定类型查找一个节点
 Node *findByString(List *, char *);//依照特定类型查找一个节点
 Node *findByPointer(List *, void *);//依照特定类型查找一个节点
 
+List *m_findByInt(List*, int);//根据位置查找所有匹配的节点
+List *m_findByDouble(List*, double);//根据位置查找所有匹配的节点
+List *m_findByString(List*, char *);//根据位置查找所有匹配的节点
+List *m_findByPointer(List*, void *);//根据位置查找所有匹配的节点
+
 void printListInfo(List *p_list,int priority);//打印列表的详细信息
 void printNodeInfo(Node *p_node,int priority);//打印节点的详细信息
 void printList(List *);//打印列表
@@ -237,7 +242,10 @@ Node *findByDouble(List *p_list, double target){
 }
 
 Node *findByString(List *p_list, char *target){
-    Node *t_node = findByValue(p_list, "string", target);
+    char *p_temp = (char *)malloc(sizeof(char)*(strlen(target)+1));
+    strcpy(p_temp, target);
+    Node *t_node = findByValue(p_list, "string", p_temp);
+    free(p_temp);
     return t_node;
 }
 
@@ -295,4 +303,33 @@ int addPointerForComplex(Node *p_node, void *temp){
     return -1;
 }
 
+List *m_findByInt(List* p_list, int temp){
+    int *p_temp = (int *)malloc(sizeof(int));
+    *p_temp = temp;
+    List *t_list = mply_findByValue(p_list, "int", (void *)p_temp);
+    free(p_temp);
+    return t_list;
+}
+
+List *m_findByDouble(List* p_list, double temp){
+    double *p_temp = (double *)malloc(sizeof(double));
+    *p_temp = temp;
+    List *t_list = mply_findByValue(p_list, "double", (void *)p_temp);
+    free(p_temp);
+    return t_list;
+}
+
+List *m_findByString(List* p_list, char *temp){
+    char *p_temp = (char *)malloc(sizeof(char)*(strlen(temp)+1));
+    strcpy(p_temp, temp);
+    List *t_list = mply_findByValue(p_list, "string", (void *)p_temp);
+    free(p_temp);
+    return t_list;
+}
+
+List *m_findByPointer(List* p_list, void *temp){
+    List *t_list = mply_findByValue(p_list, "double", (void *)temp);
+    return t_list;
+}
+
 #endif
diff --git a/stack/stack.c b/stack/stack.c
new file mode 100644
index 0000000..347880c
--- /dev/null
+++ b/stack/stack.c
@@ -0,0 +1,14 @@
+//
+//  stack.c
+//  ZE-Standard-Libraries
+//
+//  Created by 胡一兵 on 2018/6/11.
+//  Copyright © 2018年 ZE. All rights reserved.
+//
+
+#include "stack.h"
+
+int main(int argc, char **argv){
+    
+    return 0;
+}
diff --git a/stack/stack.h b/stack/stack.h
new file mode 100644
index 0000000..83b4e4e
--- /dev/null
+++ b/stack/stack.h
@@ -0,0 +1,37 @@
+//
+//  stack.h
+//  ZE-Standard-Libraries
+//
+//  Created by 胡一兵 on 2018/6/11.
+//  Copyright © 2018年 ZE. All rights reserved.
+//
+
+#ifndef stack_h
+#define stack_h
+
+#include "list.h"
+
+typedef struct stack_node{
+    unsigned long long id;
+    int if_malloc;
+    void *value;
+    struct stack_node *next;
+} SNode;
+
+typedef struct stack{
+    unsigned long long id;
+    unsigned long long length;
+    SNode *top;
+} Stack;
+
+Stack *initStack(void);
+SNode *initSNode(void);
+
+SNode *popStack(Stack *p_stack);
+int pushStack(Stack *p_stack, SNode *p_snode);
+
+int releaseStack(Stack *p_stack);
+int releaseSNode(SNode *p_snode);
+
+
+#endif /* stack_h */