Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- class DLLNode<E> {
- protected E element;
- protected DLLNode<E> pred, succ;
- public DLLNode(E elem, DLLNode<E> pred, DLLNode<E> succ) {
- this.element = elem;
- this.pred = pred;
- this.succ = succ;
- }
- @Override
- public String toString() {
- return "<-"+element.toString()+"->";
- }
- }
- class DLL<E> {
- private DLLNode<E> first, last;
- public DLL() {
- // Construct an empty SLL
- this.first = null;
- this.last = null;
- }
- public void deleteList() {
- first = null;
- last = null;
- }
- public int length() {
- int ret;
- if (first != null) {
- DLLNode<E> tmp = first;
- ret = 1;
- while (tmp.succ != null) {
- tmp = tmp.succ;
- ret++;
- }
- return ret;
- } else
- return 0;
- }
- public void insertFirst(E o) {
- DLLNode<E> ins = new DLLNode<E>(o, null, first);
- if (first == null)
- last = ins;
- else
- first.pred = ins;
- first = ins;
- }
- public void insertLast(E o) {
- if (first == null)
- insertFirst(o);
- else {
- DLLNode<E> ins = new DLLNode<E>(o, last, null);
- last.succ = ins;
- last = ins;
- }
- }
- public void insertAfter(E o, DLLNode<E> after) {
- if(after==last){
- insertLast(o);
- return;
- }
- DLLNode<E> ins = new DLLNode<E>(o, after, after.succ);
- after.succ.pred = ins;
- after.succ = ins;
- }
- public void insertBefore(E o, DLLNode<E> before) {
- if(before == first){
- insertFirst(o);
- return;
- }
- DLLNode<E> ins = new DLLNode<E>(o, before.pred, before);
- before.pred.succ = ins;
- before.pred = ins;
- }
- public E deleteFirst() {
- if (first != null) {
- DLLNode<E> tmp = first;
- first = first.succ;
- if (first != null) first.pred = null;
- if (first == null)
- last = null;
- return tmp.element;
- } else
- return null;
- }
- public E deleteLast() {
- if (first != null) {
- if (first.succ == null)
- return deleteFirst();
- else {
- DLLNode<E> tmp = last;
- last = last.pred;
- last.succ = null;
- return tmp.element;
- }
- }
- // else throw Exception
- return null;
- }
- @Override
- public String toString() {
- String ret = new String();
- if (first != null) {
- DLLNode<E> tmp = first;
- ret += tmp + "<->";
- while (tmp.succ != null) {
- tmp = tmp.succ;
- ret += tmp + "<->";
- }
- } else
- ret = "Prazna lista!!!";
- return ret;
- }
- public DLLNode<E> getFirst() {
- return first;
- }
- public DLLNode<E> getLast() {
- return last;
- }
- public void setLast(DLLNode<E> node)
- {
- last = node;
- }
- public void setFirst(DLLNode<E> node)
- {
- first = node;
- }
- }
- public class DLLVojska {
- public static void main(String[] args) throws IOException {
- DLL<Integer> lista = new DLL<Integer>();
- BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
- String s = stdin.readLine();
- int N = Integer.parseInt(s);
- s = stdin.readLine();
- String[] ids = s.split(" ");
- for (int i = 0; i < N; i++) {
- lista.insertLast(Integer.parseInt(ids[i]));
- }
- s = stdin.readLine();
- String interval[] = s.split(" ");
- int a = Integer.parseInt(interval[0]);
- int b = Integer.parseInt(interval[1]);
- s = stdin.readLine();
- interval = s.split(" ");
- int c = Integer.parseInt(interval[0]);
- int d = Integer.parseInt(interval[1]);
- DLL<Integer> result = vojska(lista, a, b, c, d);
- DLLNode<Integer> node = result.getFirst();
- System.out.print(node.element);
- node = node.succ;
- while(node != null){
- System.out.print(" "+node.element);
- node = node.succ;
- }
- }
- private static DLL<Integer> vojska(DLL<Integer> lista, int a, int b, int c, int d) {
- DLLNode<Integer> move = lista.getFirst();
- DLLNode<Integer> A = null;
- DLLNode<Integer> B = null;
- DLLNode<Integer> C = null;
- DLLNode<Integer> D = null;
- while (move != null){
- if(move.element.equals(a)){
- A = move;
- }
- if(move.element.equals(b)){
- B=move;
- }
- if(move.element.equals(c)){
- C = move;
- }
- if(move.element.equals(d)){
- D = move;
- }
- move = move.succ;
- }
- DLLNode<Integer> tempA = A.pred;
- DLLNode<Integer> tempB = B.succ;
- DLLNode<Integer> tempC = C.pred;
- DLLNode<Integer> tempD = D.succ;
- C.pred = tempA;
- if(tempA != null){
- tempA.succ = C;
- }else {
- lista.setFirst(C);
- }
- B.succ = tempD;
- if(tempD != null){
- tempD.pred = B;
- }else {
- lista.setLast(B);
- }
- if(tempB != C){
- D.succ = tempB;
- tempB.pred=D;
- A.pred = tempC;
- tempC.succ = A;
- }else{
- D.succ = A;
- A.pred = D;
- }
- return lista;
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement