The use of doubly linked list LinkedList

Document class:

classDocument { Public stringTitle {Get;Private Set; }  Public stringContent {Get;Private Set; }  Public bytePriority {Get;Private Set; }  PublicDocument (stringTitlestringContentbytePriority =0)        {             This. Title =title;  This. Content =content;  This. Priority =Priority ; }    }

Prioritydocumentmanager class:

classPrioritydocumentmanager {Private ReadOnlyLinkedlist<document>documentlist; Private ReadOnlyList<linkedlistnode<document>>Prioritynodes;  PublicPrioritydocumentmanager () {documentlist=NewLinkedlist<document>(); Prioritynodes=NewList<linkedlistnode<document>> (Ten);  for(inti =0; I <Ten; i++) {Prioritynodes.add (NewLinkedlistnode<document> (NULL)); }        }         Public voidadddocument (Document doc) {if(doc = =NULL)            {                Throw NewArgumentNullException ("Doc"); } adddocumenttoprioritynode (Doc, Doc.        priority); }        Private voidAdddocumenttoprioritynode (Document Doc,intPriority ) {            if(Priority >9|| Priority <0)            {                Throw NewArgumentException ("priority must be greater than 0 less than 9"); }            if(Prioritynodes[priority]. Value = =NULL)            {                --Priority ; if(Priority >=0) {Adddocumenttoprioritynode (doc, priority); }                Else{documentlist.addlast (doc); Prioritynodes[doc. Priority]=Documentlist.last; }                return; }            Else{LinkedListNode<Document> Prionode =Prioritynodes[priority]; if(Priority = =Doc.                    Priority) {Documentlist.addafter (Prionode, doc); Prioritynodes[doc. Priority]=Prionode.next; }                Else{LinkedListNode<Document> Firstprionode =Prionode;  while(Firstprionode.previous! =NULL&& FirstPrioNode.Previous.Value.Priority = =prioNode.Value.Priority) {Firstprionode=prionode.previous; Prionode=Firstprionode;                    } documentlist.addbefore (Firstprionode, doc); Prioritynodes[doc. Priority]=firstprionode.previous; }            }        }         Public voiddisplayallnodes () {foreach(varDocinchdocumentlist) {Console.WriteLine ("Priority : {0}, Title: {1}", Doc. Priority, Doc.            Title); }        }         PublicDocument GetDocument () {Document Doc=DocumentList.First.Value;            Documentlist.removefirst (); returnDoc; }    }

Application layer:

Prioritydocumentmanager PDM =NewPrioritydocumentmanager (); Pdm. Adddocument (NewDocument (" One","content",3)); Pdm. Adddocument (NewDocument (" Both","content",1)); Pdm. Adddocument (NewDocument ("three","content",2)); Pdm. Adddocument (NewDocument ("Six","content",4)); Pdm. Displayallnodes (); 

Attach the results of the application layer operation:

The use of doubly linked list LinkedList