我目前的工作在我的大學課程的Java雙向鏈表項目。我瞭解雙鏈表,鏈表和鏈表的概念。但是我在編寫程序時遇到了很多麻煩,因爲我不確定如何創建需要在我的方法中修改的數據。我們的教授通常會給我們他將要使用的輸入,但這次沒有,我似乎無法在我的研究中發現它。DoublyLinkedList項目:例輸入
我想我的主要問題是可能有人寫一些代碼,我開始有工作,並開始理解我的方法需要做更好呢?
這是我到目前爲止所。 (基本上只是倍率骨架..)
感謝這麼多的幫助。
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
public class DoublyLinkedList<E> implements List<E>{
DoublyLinkedListNode header;
public static void main(String[] args) {
}
public boolean add(E e) {
return false;
}
public void add(int index, E element) {
}
public boolean addAll(Collection<? extends E> c) {
return false;
}
public void clear() {
header=null;
}
public boolean contains(Object o) {
return false;
}
public E get(int index) {
return null;
}
public int indexOf(Object o) {
return 0;
}
public boolean isEmpty() {
return header == null;
}
public int lastIndexOf(Object o) {
return 0;
}
public ListIterator<E> listIterator() {
return null;
}
public boolean remove(Object o) {
return false;
}
public E remove(int index) {
return null;
}
public int size() {
return 0;
}
public Object[] toArray() {
return null;
}
private class DoublyLinkedListNode{
DoublyLinkedListNode next;
DoublyLinkedListNode last;
E contents;
}
//extra credit
private class DoublyLinkedListItr implements java.util.ListIterator{
public void add(Object arg0) {
}
public boolean hasNext() {
return false;
}
public boolean hasPrevious() {
return false;
}
public Object next() {
return null;
}
public int nextIndex() {
return 0;
}
public Object previous() {
return null;
}
public int previousIndex() {
return 0;
}
public void remove() {
}
public void set(Object arg0) {
}
}
public ListIterator<E> listIterator(int index) {
throw new UnsupportedOperationException("not implemented");
}
public <T> T[] toArray(T[] a) {
throw new UnsupportedOperationException("not implemented");
}
public List<E> subList(int fromIndex, int toIndex) {
throw new UnsupportedOperationException("not implemented");
}
public boolean retainAll(Collection<?> c) {
throw new UnsupportedOperationException("not implemented");
}
public E set(int index, E element) {
throw new UnsupportedOperationException("not implemented");
}
public boolean removeAll(Collection<?> c) {
throw new UnsupportedOperationException("not implemented");
}
public boolean addAll(int index, Collection<? extends E> c) {
throw new UnsupportedOperationException("not implemented");
}
public Iterator<E> iterator() {
throw new UnsupportedOperationException("not implemented");
}
public boolean containsAll(Collection<?> c) {
throw new UnsupportedOperationException("not implemented");
}
}
你真的必須實現'List'接口才能開始嗎? – havexz