diff --git "a/23\346\235\216\351\224\256\344\275\234\344\270\232/src/LinkedList.java" "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/LinkedList.java"
new file mode 100644
index 0000000000000000000000000000000000000000..bf7478233274bbe7001e251d09af9ae0404835f5
--- /dev/null
+++ "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/LinkedList.java"
@@ -0,0 +1,101 @@
+public class LinkedList<T> {
+    private NodeList head;
+    private NodeList tail; //尾指针用来标记最后一个结点的位置
+    private int size;//长度用来标记长度
+    public LinkedList() {
+        head = null;
+    }
+
+    public void addToFront(T item) {
+        NodeList node = new NodeList(item);
+
+        if (this.head == null) {
+            this.head = node;
+        } else{
+            NodeList temp = head;
+            node.next=temp;
+            head = node;
+        }
+        this.size++;
+    }
+
+    public int size(){
+        return this.size;
+    }
+
+    public void addToRear(T item) {
+        NodeList newNode = new NodeList(item);
+        if (this.head == null) {
+            this.head = newNode;
+        }
+        this.tail = newNode;
+        this.size++;
+    }
+
+    public void deleteItems(T item){
+        NodeList temp=this.head;
+        NodeList pretemp=new NodeList(item);
+        pretemp=temp;
+        if(temp==null){
+            System.out.println("empty");
+            return;
+        }
+        while(temp.next!=null){
+            //   System.out.println("temp"+temp.item);
+            //    System.out.println("ll"+this.head.item);
+            if(temp.item.equals(item)){
+                if(this.head.item.equals(item)){
+                    pretemp=this.head.next;
+                    this.head.next=pretemp.next;
+                    this.head=pretemp;
+
+                    //                   System.out.println("testss"+this.head.item);
+                    break;
+                }
+                System.out.println("delete");
+                pretemp.next=temp.next;
+                break;
+            }else
+            {
+                System.out.println("no delete");
+                pretemp=temp;
+                temp=temp.next;
+
+            }
+
+        }
+        if(temp.next==null){
+            temp.item=null;
+            temp.next=null;
+        }
+        this.tail=temp;
+        //  System.out.println(tail.item);
+        this.size--;
+    }
+
+    public boolean findItems(T item){
+        NodeList temp=this.head;
+        if(temp==null){
+            System.out.println("empty");
+            return false;
+        }
+        while(temp.next!=null){
+            if(temp.item.equals(item))
+            {
+                return true;
+            }
+            temp=temp.next;
+        }
+        return false;
+    }
+
+    public void printItems() {
+        NodeList temp = this.head;
+        // System.out.println("testss"+temp.item);
+        while(temp.next != null){
+            System.out.print(temp.item + " -> ");
+            temp = temp.next;
+        }
+        System.out.println(temp.item);
+    }
+}
diff --git "a/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Main.java" "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Main.java"
new file mode 100644
index 0000000000000000000000000000000000000000..65496e3fa809525dc6aac9db06039df61d822c4a
--- /dev/null
+++ "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Main.java"
@@ -0,0 +1,13 @@
+public class Main {
+    public static void main(String args[]) {
+        LinkedList<String> ll = new LinkedList<String>();
+        ll.addToFront("1");
+        ll.addToFront("2");
+       ll.addToRear("3");
+        ll.deleteItems("1");
+        ll.printItems();
+
+        System.out.println(ll.size());
+        System.out.println(ll.findItems("2"));
+    }
+}
diff --git "a/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Node.java" "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Node.java"
new file mode 100644
index 0000000000000000000000000000000000000000..2e1595f892bc852405c8407d619f7a4c37ef3f37
--- /dev/null
+++ "b/23\346\235\216\351\224\256\344\275\234\344\270\232/src/Node.java"
@@ -0,0 +1,9 @@
+
+    class NodeList<T> {
+        T item;
+        NodeList<T> next = null;
+        NodeList(T item) {
+            this.item = item;
+        }
+    }
+
diff --git a/666.txt b/666.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d91db81d702c02be1225e20c334c26b1250b30eb
--- /dev/null
+++ b/666.txt
@@ -0,0 +1 @@
+4566
\ No newline at end of file
diff --git a/Node.class b/Node.class
new file mode 100644
index 0000000000000000000000000000000000000000..f3a6d714a73a506f60c219b2e1abad3f4cd3565d
Binary files /dev/null and b/Node.class differ