forked from ASD-ADF/ASD_Task_4
/
list.cpp
185 lines (171 loc) · 3.29 KB
/
list.cpp
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#include "list.h"
void createList(List &L)
{
First(L) = NULL;
Last(L) = NULL;
}
address alokasi(infotype x)
{
address P = new elemenList;
Info(P) = x;
Next(P) = NULL;
Prev(P) = NULL;
return P;
}
void dealokasi(address &P)
{
delete P;
}
void insertFirst(List &L, address P)
{
if(First(L)==NULL) {
First(L)=P;
Next(P)=First(L);
Prev(P)=First(L);
Last(L)=P;
}
else {
Next(P) = First(L);
Prev(P) = Last(L);
Next(Last(L))=P;
Prev(Last(L)) = P;
First(L) = P;
}
}
void insertLast(List &L, address P)
{
if(First(L) == NULL)
{
insertFirst(L,P);
}
else
{
Next(P) = First(L);
Prev(P) = Last(L);
Next(Last(L))=P;
Prev(Last(L)) = P;
Last(L) = P;
}
}
void insertAfter(List &L, address P, address Prec)
{
if(Prec == Last(L))
{
insertLast(L,P);
}
else
{
Next(P) = Next(Prec);
Prev(P) = Prec;
Next(Prec) = P;
Prev(next(Prec)) = P;
}
}
void deleteFirst(List &L, address &P)
{
if(First(L)==NULL) {
cout<<"DATA TIDAK DITEMUKAN";
}
else if (First(L)!=Last(L)) {
P = First(L);
First(L) = Next(P);
Next(P) = NULL;
Prev(P) = NULL;
Prev(First(L))=Last(L);
Next(Last(L))=First(L);
}
else{
P=First(L);
Next(P)=NULL;
Prev(P)=NULL;
First(L)=NULL;
Last(L)=NULL;
}
}
void deleteLast(List &L, address &P)
{
if(next(First(L)) == NULL)
{
deleteFirst(L,P);
}
else if(First(L)==NULL)
{
cout<<"DATA TIDAK DITEMUKAN"<<endl;
}
else
{
P=Last(L);
Last(L)=Prev(Last(L));
Prev(P)=NULL;
Next(P)=NULL;
Prev(First(L))=Last(L);
Next(Last(L))=First(L);
}
}
void deleteAfter(List &L, address &P, address &Prec)
{
if(Prec==NULL) {
cout<<"Data TIDAK DITEMUKAN"<<endl;
}
else if (Prec==First(L)) {
deleteFirst(L,P);
}
else {
P = Next(Prec);
Next(Prec) = Next(P);
Prev(Next(P))=Prec;
Next(P) = NULL;
Prev(P) = NULL;
}
}
void insertID (List &L2, address P) {
address Q=First(L2);
if (Q==NULL) {
insertFirst(L2,P);
}
else if(Info(P).ID < Info(Q).ID) {
insertFirst(L2,P);
}
else {
do{
if (Info(Next(Q)).ID > Info(P).ID) {
break;
}
Q=Next(Q);
} while(Info(P).ID > Info(Q).ID && Next(Q)!= First(L2));
insertAfter(L2,P,Q);
}
}
void insertName(List &L2, address P) {
address Q;
Q=First(L2);
if(Q==NULL) {
insertFirst(L2,P);
}
else if(Info(P).name < Info(Q).name) {
insertFirst(L2,P);
}
else {
while (Info(P).name > Info(Q).name && Next(Q)!= First(L2)) {
if (Info(Next(Q)).name > Info(P).name) {
break;
}
Q=Next(Q);
}
insertAfter(L2,P,Q);
}
}
address findElm(List L, infotype x){
address Q = First(L);
while(next(Q) != First(L)){
if(Info(Q).ID == x.ID){
break;
} Q=next(Q);
}
if(Info(Q).ID == x.ID){
return Q;
}
else {
return NULL;
}
}