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- import java.io.*;
- import java.util.*;
- 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 DLLNode<E> find(E o) {
- if (first != null) {
- DLLNode<E> tmp = first;
- while (tmp.element != o && tmp.succ != null)
- tmp = tmp.succ;
- if (tmp.element == o) {
- return tmp;
- } else {
- System.out.println("Elementot ne postoi vo listata");
- }
- } else {
- System.out.println("Listata e prazna");
- }
- return first;
- }
- 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;
- }
- public E delete(DLLNode<E> node) {
- if(node==first){
- deleteFirst();
- return node.element;
- }
- if(node==last){
- deleteLast();
- return node.element;
- }
- node.pred.succ = node.succ;
- node.succ.pred = node.pred;
- return node.element;
- }
- @Override
- public String toString() {
- String ret = new String();
- if (first != null) {
- DLLNode<E> tmp = first;
- ret += tmp.element + "<->";
- while (tmp.succ != null) {
- tmp = tmp.succ;
- if (tmp.succ==null){
- ret+=tmp.element;
- }else
- ret += tmp.element + "<->";
- }
- } else
- ret = "Prazna lista!!!";
- return ret;
- }
- public String toStringR() {
- String ret = new String();
- if (last != null) {
- DLLNode<E> tmp = last;
- ret += tmp + "<->";
- while (tmp.pred != null) {
- tmp = tmp.pred;
- ret += tmp + "<->";
- }
- } else
- ret = "Prazna lista!!!";
- return ret;
- }
- public DLLNode<E> getFirst() {
- return first;
- }
- public DLLNode<E> getLast() {
- return last;
- }
- public void izvadiDupliIPrebroj(){
- }
- public boolean isVowel(E ch){
- if(ch.equals("a") || ch.equals("e") || ch.equals("i") || ch.equals("o") || ch.equals("u") )
- return true;
- else
- return false;
- }
- }
- public class SamISamogl {
- public static void izbrisi(DLL<String> lista){
- DLLNode<String> pok1=lista.getFirst();
- DLLNode<String> pok2=lista.getFirst().succ;
- while (pok1.succ!=null) {
- while (pok2 != null) {
- if (pok2.element.equals(pok1.element)) {
- if (pok2.succ == null) {
- lista.deleteLast();
- break;
- } else {
- pok2 = pok2.succ;
- lista.delete(pok2.pred);
- }
- } else {
- if (pok2.succ != null)
- pok2 = pok2.succ;
- else
- break;
- }
- }
- if (pok1.succ!= null) {
- pok1 = pok1.succ;
- if (pok1.succ != null && pok1 != null)
- pok2 = pok1.succ;
- }
- }
- izmeni(lista);
- }
- public static void izmeni(DLL<String> lista){
- DLLNode<String> pok1=lista.getFirst();
- while (pok1!=null) {
- if (lista.isVowel(pok1.element) && lista.isVowel(pok1.succ.element)) {
- lista.delete(pok1.succ);
- pok1=pok1.succ;
- }
- else if (lista.isVowel(pok1.element) && lista.isVowel(pok1.succ.element)){
- lista.delete(pok1.succ);
- pok1=pok1.succ;
- }else
- pok1=pok1.succ;
- }
- }
- public static void main(String[] args)throws IOException{
- BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
- String[] s=stdin.readLine().split("<->");
- DLL<String> lista=new DLL<>();
- for (int i=0;i<s.length;i++){
- lista.insertLast(s[i]);
- }
- izbrisi(lista);
- System.out.println(lista.toString());
- }
- }
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