diff --git a/ASD_Task_4.depend b/ASD_Task_4.depend
index a544662..30a6ed4 100644
--- a/ASD_Task_4.depend
+++ b/ASD_Task_4.depend
@@ -19,3 +19,23 @@
 	"player.h"
 	<ctime>
 
+1583390485 source:d:\kuliah\semester 2\asd_task_4\player.cpp
+	"player.h"
+	<ctime>
+
+1582637257 d:\kuliah\semester 2\asd_task_4\player.h
+	"list.h"
+
+1582637384 d:\kuliah\semester 2\asd_task_4\list.h
+	<string>
+	<windows.h>
+	<iostream>
+
+1583390998 source:d:\kuliah\semester 2\asd_task_4\list.cpp
+	"list.h"
+
+1583391176 source:d:\kuliah\semester 2\asd_task_4\main.cpp
+	"player.h"
+	"list.h"
+	<conio.h>
+
diff --git a/ASD_Task_4.layout b/ASD_Task_4.layout
index 5ec49e7..94c2957 100644
--- a/ASD_Task_4.layout
+++ b/ASD_Task_4.layout
@@ -2,29 +2,29 @@
 <CodeBlocks_layout_file>
 	<FileVersion major="1" minor="0" />
 	<ActiveTarget name="Debug" />
-	<File name="main.cpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="list.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="4763" topLine="177" />
+			<Cursor1 position="404" topLine="22" />
 		</Cursor>
 	</File>
-	<File name="player.h" open="1" top="1" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="list.cpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="1" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="342" topLine="0" />
+			<Cursor1 position="2744" topLine="105" />
 		</Cursor>
 	</File>
-	<File name="list.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="main.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="2436" topLine="0" />
+			<Cursor1 position="5899" topLine="159" />
 		</Cursor>
 	</File>
-	<File name="player.cpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="player.cpp" open="1" top="0" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="253" topLine="39" />
+			<Cursor1 position="2997" topLine="74" />
 		</Cursor>
 	</File>
-	<File name="list.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="player.h" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="270" topLine="0" />
+			<Cursor1 position="170" topLine="0" />
 		</Cursor>
 	</File>
 </CodeBlocks_layout_file>
diff --git a/bin/Debug/ASD_Task_4.exe b/bin/Debug/ASD_Task_4.exe
new file mode 100644
index 0000000..bf60807
Binary files /dev/null and b/bin/Debug/ASD_Task_4.exe differ
diff --git a/list.cpp b/list.cpp
index 847a957..3828c3f 100644
--- a/list.cpp
+++ b/list.cpp
@@ -5,7 +5,7 @@ void createList(List &L) {
     * FS : first(L) diset Nil
     */
     //------------- YOUR CODE HERE -------------
-
+    first(L)=NULL;
     //----------------------------------------
 }
 
@@ -15,9 +15,11 @@ address allocate(infotype x) {
     *      next dan prev elemen = Nil
     */
 
-    address P = NULL;
+    address P = new elmlist;
     //------------- YOUR CODE HERE -------------
-
+    info(P) = x;
+    next(P) = NULL;
+    prev(P) = NULL;
     //----------------------------------------
     return P;
 }
@@ -27,7 +29,7 @@ void deallocate(address &P) {
     * FS : menghapus elemen yang ditunjuk oleh P (delete)
     */
     //------------- YOUR CODE HERE -------------
-
+    delete P;
     //----------------------------------------
 }
 
@@ -37,7 +39,20 @@ void insertFirst(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen pertama pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    if (first(L)!=NULL)
+    {
+        next(P) = first(L);
+        prev(P) = prev(first(L));
+        next(prev(first(L))) = P;
+        prev(first(L)) = P;
+        first(L) = P;
+    }
+    else
+    {
+        first(L) = P;
+        next(first(L)) = P;
+        prev(first(L)) = P;
+    }
     //----------------------------------------
 }
 
@@ -47,7 +62,19 @@ void insertLast(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen terakhir pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    if (first(L)!=NULL)
+    {
+        next(P) = first(L);
+        prev(P) = prev(first(L));
+        next(prev(first(L))) = P;
+        prev(first(L)) = P;
+    }
+    else
+    {
+        first(L)=P;
+        next(first(L)) = P;
+        prev(first(L)) = P;
+    }
     //----------------------------------------
 }
 
@@ -58,11 +85,16 @@ address findElmByID(List L, infotype x) {
            mengembalikan Nil jika tidak ditemukan
     */
 
-    address P = NULL;
+    address P = first(L);
     //------------- YOUR CODE HERE -------------
-
+    do{
+        P=next(P);
+    }while(P!=first(L) && info(P).ID != x.ID);
+    if (info(P).ID == x.ID){
+        return P;
+    }
     //----------------------------------------
-    return P;
+    return NULL;
 }
 
 address findElmByName(List L, infotype x) {
@@ -72,11 +104,18 @@ address findElmByName(List L, infotype x) {
            mengembalikan Nil jika tidak ditemukan
     */
 
-    address P = NULL;
+    address P = first(L);
     //------------- YOUR CODE HERE -------------
-
+    do
+    {
+        P = next(P);
+    } while (P != first(L)&& info(P).name != x.name);
+    if (info(P).name == x.name)
+        {
+            return P;
+        }
     //----------------------------------------
-    return P;
+    return NULL;
 }
 
 void deleteFirst(List &L, address &P) {
@@ -85,7 +124,18 @@ void deleteFirst(List &L, address &P) {
     * FS : elemen pertama di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    P = first(L);
+    if (next(first(L))!=P){
+        first(L) = next(P);
+        next(prev(P)) = first(L);
+        prev(first(L)) = prev(P);
+        next(P) = NULL;
+        prev(P) = NULL;
+    }else{
+        next(P)=NULL;
+        prev(P)=NULL;
+        first(L)=NULL;
+    }
     //----------------------------------------
 }
 
@@ -95,8 +145,12 @@ void deleteLast(List &L, address &P) {
     * FS : elemen tarakhir di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
-    //----------------------------------------
+    P = prev(first(L));
+    next(prev(P))=first(L);
+    prev(first(L)) = prev(prev(P));
+    next(P) = NULL;
+    prev(P) = NULL;
+    //---------------------
 }
 
 void insertAfter(List &L, address &Prec, address P) {
@@ -106,7 +160,14 @@ void insertAfter(List &L, address &Prec, address P) {
     *      ditunjuk pointer Prec
     */
     //------------- YOUR CODE HERE -------------
-
+    if(first(L)==NULL){
+        insertFirst(L,P);
+    }else{
+        next(P) = next(Prec);
+        prev(P) = Prec;
+        prev(next(Prec)) = P;
+        next(Prec) = P;
+    }
     //----------------------------------------
 
 }
@@ -117,6 +178,17 @@ void deleteAfter(List &L, address &Prec, address &P) {
     *      dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
+    P = next(Prec);
+    if(next(Prec)!=first(L)){
+        next(Prec) = next(P);
+        prev(next(P)) = Prec;
+        next(P) = NULL;
+        prev(P) = NULL;
+    }else{
+        next(P)=NULL;
+        prev(P)=NULL;
+        P=NULL;
+    }
 
     //----------------------------------------
 }
diff --git a/list.h b/list.h
index 4468d0f..08a59e0 100644
--- a/list.h
+++ b/list.h
@@ -29,15 +29,15 @@ typedef struct elmlist *address;
 
 struct elmlist {
     //-------------  YOUR CODE HERE  -----------
-
-
+    infotype info;
+    address next;
+    address prev;
     //----------------------------------------
 };
 
 struct List {
     //-------------  YOUR CODE HERE  -----------
-
-
+    address first;
     //----------------------------------------
 };
 
diff --git a/main.cpp b/main.cpp
index a66a5c1..89c0f91 100644
--- a/main.cpp
+++ b/main.cpp
@@ -117,13 +117,17 @@ void runMenu(int menu) {
         // insert first music
         P = inputMusic();
         insertFirst(L,P);
-        cout<<"press enter";getche();
+        cout<<"press enter";
+        getche();
         break;
     case 2:
         // insert last music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-        //input music
+        P=inputMusic();
+        insertLast(L,P);
+        cout << "press enter";
+        getche();
         //insertLast()
 
         //----------------------------------------
@@ -138,12 +142,17 @@ void runMenu(int menu) {
         // play first music
         P = first(L);
         playMusic(P);
+        cout << "press enter";
+        getche();
         break;
     case 5:
         // play last music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-
+        P=prev(first(L));
+        playMusic(P);
+        cout << "press enter";
+        getche();
         //----------------------------------------
         break;
     case 6:
@@ -154,7 +163,11 @@ void runMenu(int menu) {
         P = findElmByName(L, x);
         if(P != NULL){
             cout<<"music found"<<endl;
+        }else{
+            cout<<"music not found"<<endl;
         }
+        cout << "press enter";
+        getche();
         //----------------------------------------
         cout<<"press enter";getche();
         break;
@@ -162,7 +175,13 @@ void runMenu(int menu) {
         // search music by ID
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-
+        cin>>x.ID;
+        P = findElmByID(L, x);
+        if(P != NULL){
+            cout<<"music found"<<endl;
+        }else{
+            cout<<"music not found"<<endl;
+        }
         //----------------------------------------
         cout<<"press enter";getche();
         break;
@@ -171,6 +190,8 @@ void runMenu(int menu) {
         if(P!=NULL) {
             playMusic(P);
         }
+        cout << "press enter";
+        getche();
         break;
     case 9:
         // play next music
@@ -178,18 +199,26 @@ void runMenu(int menu) {
             P = next(P);
             playMusic(P);
         }
+        cout << "press enter";
+        getche();
         break;
     case 10:
         // play previous music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-
+        if (P!=NULL){
+            P = prev(P);
+            playMusic(P);
+        }
+        cout << "press enter";
+        getche();
         //----------------------------------------
         break;
     case 11:
         // shuffle list
         shuffleList(L);
-        cout<<"press enter";getche();
+        cout << "press enter";
+        getche();
         break;
     case 12:
         // play repeat all music
@@ -202,7 +231,7 @@ void runMenu(int menu) {
     case 13:
         // delete music by ID
         cout<<"input music ID : ";
-        cin>>x.name;
+        cin>>x.ID;
         deleteMusicByID(L, x);
         cout<<"press enter";getche();
         break;
diff --git a/obj/Debug/list.o b/obj/Debug/list.o
new file mode 100644
index 0000000..3a4bd35
Binary files /dev/null and b/obj/Debug/list.o differ
diff --git a/obj/Debug/main.o b/obj/Debug/main.o
new file mode 100644
index 0000000..26d3b88
Binary files /dev/null and b/obj/Debug/main.o differ
diff --git a/obj/Debug/player.o b/obj/Debug/player.o
new file mode 100644
index 0000000..8dfb8e8
Binary files /dev/null and b/obj/Debug/player.o differ
diff --git a/player.cpp b/player.cpp
index 31ef288..c8692a6 100644
--- a/player.cpp
+++ b/player.cpp
@@ -14,12 +14,16 @@ void printInfo(List L) {
     */
 
     address Q = first(L);
-    do {
-        cout<<"name    : "<<info(Q).name<<endl
-            <<"ID      : "<<info(Q).ID<<endl
-            <<"location: "<<info(Q).location<<endl;
-        Q = next(Q);
-    } while(Q!=first(L));
+    if(first(L)!=NULL){
+        do {
+            cout<<"name    : "<<info(Q).name<<endl
+                <<"ID      : "<<info(Q).ID<<endl
+                <<"location: "<<info(Q).location<<endl;
+            Q = next(Q);
+        } while(Q!=first(L));
+    }else{
+        cout<<"List Kosong"<<endl;
+    }
     cout<<"==============================================="<<endl;
 }
 
@@ -44,8 +48,28 @@ void shuffleList(List &L) {
     */
     //------------- YOUR CODE HERE -------------
 
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+    cout<<"UNDER MAIN TENIS"<<endl;
+    address P=first(L);
+    int i =0;
+    do{
+        P=next(P);
+        i++;
+    }while(P!=first(L));
+
+    address Q,R;
+    for(int j=1; j<=i ; j++){
+        int acak = randomInt(j);
+        int k = 1;
+        Q = first(L);
+        do{
+            Q = next(Q);
+            k++;
+
+        }while (Q != first(L) && k < acak);
+        deleteAfter(L,prev(Q),R);
+        insertFirst(L,R);
+    }
+    cout<<"Random Done"<<endl;
     //----------------------------------------
 }
 
@@ -56,8 +80,14 @@ void playRepeat(List &L, int n) {
     */
     //------------- YOUR CODE HERE -------------
 
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+    cout<<"UNDER MAIN TENIS"<<endl;
+    for(int i=0; i<n; i++){
+        address P = first(L);
+        do{
+            playMusic(P);
+            P=next(P);
+        }while(P!=first(L));
+    }
     //----------------------------------------
 }
 
@@ -70,8 +100,19 @@ void deleteMusicByID(List &L, infotype x) {
     */
     //------------- YOUR CODE HERE -------------
 
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+    address R;
+    address ElmygDicari=findElmByID(L,x);
+    if(ElmygDicari==NULL){
+        cout<<"music not found"<<endl;
+    }else if (ElmygDicari == first(L)){
+        deleteFirst(L, R);
+        deallocate(R);
+        cout<<"delete succes"<<endl;
+    }else if (ElmygDicari!=NULL){
+        deleteAfter(L, prev(ElmygDicari), R);
+        deallocate(R);
+        cout<<"delete succes"<<endl;
+    }
     //----------------------------------------
 
 }