661 lines
12 KiB
C++
661 lines
12 KiB
C++
//-------------------------------------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, SH Software Co. Ltd.
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// = FileName : List 模板类
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// = Version : ver2.0
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// = Author : zjq
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// = CreateDate : 2002-09-09
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// = Description: List 声明 单向循环链表
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// 支持自动分配，使用[]可以将其看作一个具有无限长度的链表,同时优化了链表的随机访问速度。
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// = Maintainers:
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//
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//-------------------------------------------------------------------------------------------------------+
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#ifndef _LIST_H_
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#define _LIST_H_
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#ifndef _TABLE_H_
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#include "Table.h"
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#endif
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#ifndef _LISTNODE_H_
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#include "ListNode.h"
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#endif
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template<class T> class List:public Table<T>
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{
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public:
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List(long initLength = 0);
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List(const Table<T>&table);
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List(const List<T>&table);
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List<T>&operator = (const Table<T>&table);
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List<T>&operator = (const List<T>&table);
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virtual ~List();
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//space manage
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//when newLength<old this->length,this->cur will move to last!always copy!
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virtual void SetLength(long newLength,bool bCopy = true);
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//this->cur visit
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//allow get head node data!
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virtual T& GetCurData();
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//alloc set head node data!
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virtual void SetCurData(const T&t);
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//when index invalid,move to head;
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virtual void MoveTo(long index);
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//if list is empty,move to head node;
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virtual void MoveToFirst();
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//if list is empty,move to head node;
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virtual void MoveToLast();
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//to recycle include head node;
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virtual void MoveToNext();
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//to recycle include head node;
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virtual void MoveToPre();
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//const visit
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virtual const T& GetAt(long index) const;
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virtual const T* GetFirst() const;
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virtual const T* GetLast() const;
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virtual const T* GetNext(const T*p) const;
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virtual const T* GetPre(const T*p) const;
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//insert/del
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//if this->cur == -1,insert first node;quick speed!
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virtual void InsertAfterCur(const T&t);
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//alloc this->cur == -1!slow speed!
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virtual void InsertCur(const T&t);
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//if this->cur != -1,don't change this->cur;if this->cur == -1,AddTail(T&t),this->cur move to last!
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//if index == this->length add tail,if index< = 0,insert first!
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virtual void Insert(long index,const T&t);
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//insert first!
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virtual void InsertHead(const T&t);
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virtual long AddTail(const T&t);
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//this->cur node can't be head node!!!
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virtual void DelCur();
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virtual void Clear();
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//detach but not release
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virtual void DetachAfterCur();
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virtual long Conbine(List<T>&list,long from = 0);
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//operato
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//稳定插入排序
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virtual void Arrange(bool bIncrease = true);
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//稳定插入排序
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virtual void Arrange(int (*cmp)(const T&,const T&));
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//比Table::Reverse快的多!
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virtual void ReverseList();
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virtual void Rotate(long iFrom,long iTo);
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void Detach();
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void DetachAfter(long i);
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void SplitAtCur(List<T>&list);
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void SplitAt(long i,List<T>&list);
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ListNode<T>*GetCurPos() const;
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protected:
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//head node,not the first data node;
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ListNode<T>*head;
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//last node,when is empty it is head node;
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ListNode<T>*tail;
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//the node whose index is this->cur,when this->cur is -1,curPos is head.
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ListNode<T>*curPos;
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virtual void Realloc(long newLength);
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};
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template<class T>
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List<T>& List<T>::operator = (const Table<T>&table)
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{
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this->DeepCopy(table);
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return *this;
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}
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template<class T>
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List<T>& List<T>::operator = (const List<T>&table)
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{
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this->DeepCopy(table);
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return *this;
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}
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template<class T>
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void List<T>::Detach()
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{
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this->curPos = this->head;
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this->cur = -1;
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DetachAfterCur();
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}
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template<class T>
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void List<T>::DetachAfter(long i)
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{
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MoveTo(i);
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DetachAfterCur();
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}
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template<class T>
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void List<T>::SplitAtCur(List<T>&list)
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{
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list.Conbine(*this,this->cur);
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}
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template<class T>
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void List<T>::SplitAt(long i,List<T>&list)
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{
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MoveTo(i);
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SplitAtCur(list);
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}
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template<class T>
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ListNode<T>* List<T>::GetCurPos() const
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{
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return this->curPos;
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}
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template<class T>
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void List<T>::DetachAfterCur()
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{
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this->curPos->next =this-> head;
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this->tail = this->curPos;
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this->length = this->cur + 1;
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}
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template<class T>
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T& List<T>::GetCurData()
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{
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return this->curPos->data;
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}
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template<class T>
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void List<T>::SetCurData(const T&t)
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{
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this->curPos->data = t;
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}
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template<class T>
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void List<T>::Clear()
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{
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this->tail->next = NULL;
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ListNode<T>*p = this->head->next;
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while(p != NULL)
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{
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ListNode<T> *pn = p->next;
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delete p;
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p = pn;
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}
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this->curPos = this->tail = this->head->next = this->head;
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this->length = 0;
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this->cur = -1;
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}
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template<class T>
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const T* List<T>::GetFirst() const
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{
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return this->IsEmpty() ? NULL : (const T*)(this->head->next);
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}
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template<class T>
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const T* List<T>::GetLast() const
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{
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return this->IsEmpty() ? NULL : (const T*)this->tail;
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}
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template<class T>
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const T* List<T>::GetNext(const T*p) const
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{
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return (p == NULL || p == ((const T*)this->tail)) ? NULL : (const T*)(((const ListNode<T>*)p)->next);
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}
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template<class T>
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const T*List<T>::GetPre(const T*p) const
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{
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if (p == NULL)
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{
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return NULL;
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}
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if (p == ((const T*)(this->head->next)))
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{
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return NULL;
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}
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else if (p == (const T*)(this->curPos->next))
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{
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return (const T*)this->curPos;
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}
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long i = 0;
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for (const ListNode<T>*pCur = this->head;i<this->GetLength();i++,pCur = pCur->next)
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{
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if ((const T*)(pCur->next) == p)
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{
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return (const T*)pCur;
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}
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}
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return NULL;
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}
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template<class T>
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const T& List<T>::GetAt(long index) const
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{
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ListNode<T> *p;
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if (index>this->cur)
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{
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p = this->curPos;
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for (long i = this->cur;i<index;i++,p = p->next);
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}
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else if (index<this->cur)
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{
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p = this->head;
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for (long i = -1;i<index;i++,p = p->next);
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}
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else
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{
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p = this->curPos;
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}
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return p->data;
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}
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template<class T>
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void List<T>::ReverseList()
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{
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if (this->length < 2)
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{
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return;
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}
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ListNode<T>*p,*next = this->head->next,*pre = this->head;
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for (long i = 0;i<this->length;i++)
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{
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p = next;
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next = p->next;
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p->next = pre;
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pre = p;
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}
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p = this->head->next;
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this->head->next = this->tail;
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this->tail = p;
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}
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template<class T>
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void List<T>::Rotate(long iFrom,long iTo)
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{
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if (iFrom != iTo)
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{
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long iNewZero = (iFrom - iTo + this->GetLength()) % this->GetLength();
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MoveTo(iNewZero - 1 + this->GetLength() % this->GetLength());
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ListNode<T>*newTail = GetCurPos();
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MoveTo(iNewZero);
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//形成环路
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this->tail->next = this->head->next;
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//更新head
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this->head->next = this->curPos;
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this->cur = 0;
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//更新tail
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this->tail = newTail;
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this->tail->next = this->head;
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}
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}
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template<class T>
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void List<T>::Arrange(bool bIncrease)
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{
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if (this->GetLength() < 2)
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{
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return;
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}
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if (bIncrease)
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{
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MoveToFirst();
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MoveToNext();
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while(!this->IsBegin())
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{
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T temp = GetCurData();
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long i = this->GetCur();
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ListNode<T>*pos = GetCurPos();
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MoveToFirst();
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ListNode<T>*pre = this->head;
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long preCur = -1;
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while(this->GetCur() < i)
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{
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if (GetCurData()>temp)
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{
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this->curPos = pre;
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this->cur = preCur;
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InsertAfterCur(temp);
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this->curPos = pos;
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this->cur = i+1;
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DelCur();
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}
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else
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{
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preCur = this->GetCur();
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pre = GetCurPos();
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MoveToNext();
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}
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}
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MoveToNext();
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}
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}
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else
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{
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MoveToFirst();
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MoveToNext();
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while(!this->IsBegin())
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{
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T temp = GetCurData();
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long i = this->GetCur();
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ListNode<T>*pos = GetCurPos();
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MoveToFirst();
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ListNode<T>*pre = head;
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long preCur = -1;
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while(this->GetCur()<i)
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{
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if (GetCurData()<temp)
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{
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this->curPos = pre;
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this->cur = preCur;
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InsertAfterCur(temp);
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this->curPos = pos;
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this->cur = i+1;
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DelCur();
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}
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else
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{
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preCur = this->GetCur();
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pre = GetCurPos();
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MoveToNext();
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}
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}
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MoveToNext();
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}
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}
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}
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template<class T>
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void List<T>::Arrange(int (*cmp)(const T&,const T&))
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{
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if (this->GetLength() < 2)
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{
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return;
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}
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MoveToFirst();
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MoveToNext();
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while(!this->IsBegin())
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{
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T temp = GetCurData();
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long i = this->GetCur();
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ListNode<T>*pos = GetCurPos();
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MoveToFirst();
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ListNode<T>*pre = head;
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long preCur = -1;
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while(this->GetCur()<i)
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{
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if (cmp(GetCurData(),temp)>0)
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{
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this->curPos = pre;
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this->cur = preCur;
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InsertAfterCur(temp);
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this->curPos = pos;
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this->cur = i+1;
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DelCur();
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}
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else
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{
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preCur = this->GetCur();
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pre = GetCurPos();
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MoveToNext();
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}
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}
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MoveToNext();
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}
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}
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template<class T>
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void List<T>::MoveToFirst()
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{
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if (this->IsEmpty())
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{
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this->curPos = this->head;
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this->cur = -1;
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}
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else
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{
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this->curPos = this->head->next;
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this->cur = 0;
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}
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}
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template<class T>
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void List<T>::MoveToLast()
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{
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this->curPos = this->tail;
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this->cur = this->length-1;
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}
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template<class T>
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void List<T>::MoveToPre()
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{
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if (this->GetCur() == -1)
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{
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MoveToLast();
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}
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else
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{
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MoveTo(this->GetCur() - 1);
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}
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}
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template<class T>
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void List<T>::MoveToNext()
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{
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this->curPos = this->curPos->next;
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this->cur++;
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if (this->curPos == this->head)
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{//recycle
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this->cur = -1;
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}
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}
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template<class T>
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void List<T>::MoveTo(long index)
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{
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if (this->IsValidIndex(index))
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{
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if (index == this->GetLastIndex())
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{
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MoveToLast();
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}
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else
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{
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if (index < this->cur)
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{//before
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MoveToFirst();
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}
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while(this->GetCur() != index)
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{
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MoveToNext();
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}
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}
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}
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else
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{
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this->cur = -1;
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this->curPos = this->head;
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}
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}
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template<class T>
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void List<T>::InsertAfterCur(const T&t)
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{
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ListNode<T>*p = new ListNode<T>;
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p->data = t;
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p->next = this->curPos->next;
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this->curPos->next = p;
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this->length++;
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this->cur++;
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if (this->curPos == this->tail)
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{
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this->tail = p;
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}
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this->curPos = p;
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}
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template<class T>
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void List<T>::InsertCur(const T&t)
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{
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MoveToPre();
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InsertAfterCur(t);
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}
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template<class T>
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long List<T>::AddTail(const T&t)
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{
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MoveToLast();
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InsertAfterCur(t);
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return this->GetLastIndex();
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}
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template<class T>
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void List<T>::InsertHead(const T&t)
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{
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MoveTo(-1);
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InsertAfterCur(t);
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}
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template<class T>
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void List<T>::Insert(long index,const T&t)
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{
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MoveTo(index-1);
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InsertAfterCur(t);
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}
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template<class T>
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void List<T>::DelCur()
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{
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ListNode<T>*p = this->curPos;
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MoveToPre();
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this->curPos->next = p->next;
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if (p == tail)
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{
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this->tail = this->curPos;
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}
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delete p;
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this->length--;
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}
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template<class T>
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void List<T>::Realloc(long newLength)
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{
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if (newLength>this->GetLength())
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{
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long oldCur = this->cur;
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ListNode<T>*oldPos = this->curPos;
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T t;
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while(this->GetLength()<newLength)
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{
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AddTail(t);
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}
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this->curPos = oldPos;
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this->cur = oldCur;
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}
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}
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template<class T>
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void List<T>::SetLength(long newLength,bool bCopy)
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{
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if (newLength>this->GetLength())
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{
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Realloc(newLength);
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}
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else
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{
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while(newLength<this->GetLength())
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{
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this->DelTail();
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}
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}
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}
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template<class T>
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List<T>::List(long initLength)
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{
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this->head = this->tail = new ListNode<T>;
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this->head->next = this->head;
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this->curPos = this->head;
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Realloc(initLength);
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}
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template<class T>
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List<T>::List(const Table<T>&table)
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{
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this->head = this->tail = new ListNode<T>;
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this->head->next = this->head;
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this->curPos = this->head;
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this->DeepCopy(table);
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}
|
|
|
|
template<class T>
|
|
List<T>::List(const List<T>&table)
|
|
{
|
|
this->head = this->tail = new ListNode<T>;
|
|
this->head->next = this->head;
|
|
this->curPos = this->head;
|
|
this->DeepCopy(table);
|
|
}
|
|
|
|
template<class T>
|
|
List<T>::~List()
|
|
{
|
|
if (this->head == NULL)
|
|
{
|
|
return;
|
|
}
|
|
Clear();
|
|
delete this->head;
|
|
}
|
|
|
|
template<class T>
|
|
long List<T>::Conbine(List<T>&list,long from)
|
|
{
|
|
if (list.IsValidIndex(from))
|
|
{
|
|
long oldCur = this->GetCur();
|
|
ListNode<T>* oldPos = GetCurPos();
|
|
|
|
list.MoveTo(from);
|
|
this->tail->next = list.GetCurPos();
|
|
list.MoveToLast();
|
|
this->tail = list.GetCurPos();
|
|
this->length += list.GetLength() - from;
|
|
list.DetachAfter(from- 1);
|
|
this->tail->next = this->head;
|
|
|
|
this->cur = oldCur;
|
|
this->curPos = oldPos;
|
|
}
|
|
return this->length;
|
|
}
|
|
|
|
|
|
#endif
|