数据结构的问题
求用java写的链表数据结构

------解决方案--------------------
弄个简单的。链表大概就这样
class LinkList{
private LinkNode first;//This field is used to reference to first link on list
public LinkList(){//The coustructor of Linklist class
first=null;//This Statement indicate that there is no items on list yet
}
public boolean isEmpty(){
return(first==null);
}
public void insertFirst(double dd){
LinkNode newLink=new LinkNode(dd);
newLink.next=first;
first=newLink;
}
public LinkNode deleteFirst(){
LinkNode temp=first;
first=first.next;
return temp;
}
public void displayList(){
LinkNode current=first;
while(current!=null){
current.displayLinkNode();
current=current.next;
}
}
}
class LinkNode{
private double dDate;//The data of the LinkList;
public LinkNode next;
public LinkNode(double dd){
this.dDate=dd;
}
public void displayLinkNode(){
System.out.println("The Date of this NOde is:"+this.dDate);
}
}
public class Test{
public static void main(String[] args){
LinkList theList=new LinkList();
theList.insertFirst(22.22);
theList.insertFirst(33.33);
theList.displayList();
System.out.println("is Empty or not:"+theList.isEmpty());
theList.deleteFirst();
System.out.println("After we delete the first Node:");
theList.displayList();
theList.insertFirst(44.44);
System.out.println("After we insert the first Node:");
theList.displayList();
}
}