学校要我们做数据结构的课程设计线性表的应用——仓库管理和图的应用——工程工期控制问题.一向以来编这些算法程序都是用C或C++语言来写的,这次我决定做一个新尝试用C#来编这两个算法,并配以图形界面来显示效果.下面是我写的双向链表类.
using System;
using System.Collections.Generic;
using System.Text;
namespace LJH.ListNode
{
public class Objects
{
private int number; /* 货物编号 */
private string name; /* 货物名称 */
private int counter; /* 货物数量 */
//构造函数
public Objects(int num, string Name, int count)
{
number = num;
name = Name;
counter = count;
}
public int Number
{
get
{
return number;
}
set
{
number = value;
}
}
public string Name
{
get
{
return name;
}
set
{
name = value;
}
}
public int Counter
{
get
{
return counter;
}
set
{
counter = value;
}
}
}
// 结点类
public class ListNode
{
public ListNode(Objects bugs)
{
goods = bugs;
}
/// <summary>
/// 前一个
/// </summary>
public ListNode Previous;
/// <summary>
/// 后一个
/// </summary>
public ListNode Next;
public ListNode next
{
get
{
return Next;
}
set
{
Next = value;
}
}
/// <summary>
/// 值
/// </summary>
public Objects goods;
public Objects Goods
{
get
{
return goods;
}
set
{
goods = value;
}
}
}
public class Clists
{
public Clists()
{
//构造函数
//初始化
ListCountValue = 0;
Head = null;
Tail = null;
}
/// <summary>
/// 表名
/// </summary>
private string clistname = "";
public string ClistName
{
get
{
return clistname;
}
set
{
clistname = value;
}
}
/// <summary>
/// 头指针
/// </summary>
private ListNode Head;
/// <summary>
/// 尾指针
/// </summary>
private ListNode Tail;
/// <summary>
/// 当前指针
/// </summary>
private ListNode Current;
public ListNode current
{
get
{
return Current;
}
set
{
Current = value;
}
}
/// <summary>
/// 链表数据的个数
/// </summary>
private int ListCountValue;
/// <summary>
/// 尾部添加数据
/// </summary>
public void Append(Objects DataValue)
{
ListNode NewNode = new ListNode(DataValue);
if (IsNull())
//如果头指针为空
{
Head = NewNode;
Tail = NewNode;
}
else
{
Tail.Next = NewNode;
NewNode.Previous = Tail;
Tail = NewNode;
}
Current = NewNode;
//链表数据个数加一
ListCountValue += 1;
}
/// <summary>
/// 删除当前的数据
/// </summary>
public void Delete()
{
//若为空链表
if (!IsNull())
{
//若删除头
if (IsBof())
{
Head = Current.Next;
Current = Head;
ListCountValue -= 1;
return;
}
//若删除尾
if (IsEof())
{
Tail = Current.Previous;
Tail.next = null;
Current = Tail;
ListCountValue -= 1;
return;
}
//若删除中间数据
Current.Previous.Next = Current.Next;
Current = Current.Previous;
ListCountValue -= 1;
return;
}
}
/// <summary>
/// 向后移动一个数据
/// </summary>
public void MoveNext()
{
if (!IsEof()) Current = Current.Next;
}
/// <summary>
/// 向前移动一个数据
/// </summary>
public void MovePrevious()
{
if (!IsBof()) Current = Current.Previous;
}
/// <summary>
/// 移动到第一个数据
/// </summary>
public void MoveFrist()
{
Current = Head;
}
/// <summary>
/// 移动到最后一个数据
/// </summary>
public void MoveLast()
{
Current = Tail;
}
/// <summary>
/// 判断是否为空链表
/// </summary>
public bool IsNull()
{
if (ListCountValue == 0)
return true;
return false;
}
/// <summary>
/// 判断是否为到达尾部
/// </summary>
public bool IsEof()
{
if (Current == Tail)
return true;
return false;
}
/// <summary>
/// 判断是否为到达头部
/// </summary>
public bool IsBof()
{
if (Current == Head)
return true;
return false;
}
public Objects GetCurrentValue()
{
return Current.goods;
}
/// <summary>
/// 取得链表的数据个数
/// </summary>
public int ListCount
{
get
{
return ListCountValue;
}
}
/// <summary>
/// 清空链表
/// </summary>
public void Clear()
{
MoveFrist();
while (!IsNull())
{
//若不为空链表,从尾部删除
Delete();
}
}
/// <summary>
/// 在当前位置前插入数据
/// </summary>
public void Insert(Objects DataValue)
{
ListNode NewNode = new ListNode(DataValue);
if (IsNull())
{
//为空表，则添加
Append(DataValue);
return;
}
if (IsBof())
{
//为头部插入
NewNode.Next = Head;
Head.Previous = NewNode;
Head = NewNode;
Current = Head;
ListCountValue += 1;
return;
}
//中间插入
NewNode.Next = Current;
NewNode.Previous = Current.Previous;
Current.Previous.Next = NewNode;
Current.Previous = NewNode;
Current = NewNode;
ListCountValue += 1;
}
/// <summary>
/// 进行升序插入
/// </summary>
public void InsertAscending(Objects InsertValue)
{
//参数：InsertValue 插入的数据
//为空链表
if (IsNull())
{
//添加
Append(InsertValue);
return;
}
//移动到头
MoveFrist();
if ((InsertValue.Number < GetCurrentValue().Number))
{
//满足条件，则插入，退出
Insert(InsertValue);
return;
}
while (true)
{
if (InsertValue.Number < GetCurrentValue().Number)
{
//满族条件，则插入，退出
Insert(InsertValue);
break;
}
if (IsEof())
{
//尾部添加
Append(InsertValue);
break;
}
//移动到下一个指针
MoveNext();
}
}
/// <summary>
/// 进行降序插入
/// </summary>
/*货物入库*/
public void InsertUnAscending(Objects InsertValue)
{
//参数：InsertValue 插入的数据
//为空链表
if (IsNull())
{
//添加
Append(InsertValue);
return;
}
//移动到头
MoveFrist();
if (InsertValue.Number > GetCurrentValue().Number)
{
//满足条件，则插入，退出
Insert(InsertValue);
return;
}
while (true)
{
if (InsertValue.Number > GetCurrentValue().Number)
{
//满足条件，则插入，退出
Insert(InsertValue);
break;
}
if (IsEof())
{
//尾部添加
Append(InsertValue);
break;
}
//移动到下一个指针
MoveNext();
}
}
//根据名字查询货物
public Objects FindObjects(string name)
{
ListNode lnode = Head;
if (IsNull())
{
return null;
}
else if (IsEof())
{
return null;
}
else
while (lnode.goods.Name != name)
{
if (lnode.Next == null)
{
Current = lnode;
return null;
}
lnode = lnode.Next;
}
Current = lnode;
return lnode.goods;
}
//根据编号查询货物
public Objects FindObjects(int number)
{
ListNode lnode = Head;
if (IsNull())
{
return null;
}
else if (IsEof())
{
return null;
}
else
while (lnode.goods.Number != number)
{
if (lnode.Next == null)
{
Current = lnode;
return null;
}
lnode = lnode.Next;
}
Current = lnode;
return lnode.goods;
}
/*货物出库*/
//根据名字删除货物
public Objects DeleteObjects(string name)
{
Objects bugs;
bugs = FindObjects(name);
Delete();
return bugs;
}
//根据编号删除货物
public Objects DeleteObjects(int number)
{
Objects bugs;
bugs = FindObjects(number);
Delete();
return bugs;
}
}
}
using System;using System.Collections.Generic;using System.Text;namespace LJH.ListNode{
public class Objects {
private int number; /* 货物编号 */ private string name; /* 货物名称 */ private int counter; /* 货物数量 */ //构造函数 public Objects(int num, string Name, int count) { number = num; name = Name; counter = count; } public int Number { get { return number; } set { number = value; } } public string Name { get { return name; } set { name = value; } } public int Counter { get { return counter; } set { counter = value; } } } // 结点类 public class ListNode { public ListNode(Objects bugs) { goods = bugs; } /// <summary> /// 前一个 /// </summary> public ListNode Previous; /// <summary> /// 后一个 /// </summary> public ListNode Next; public ListNode next { get { return Next; } set { Next = value; } } /// <summary> /// 值 /// </summary> public Objects goods; public Objects Goods { get { return goods; } set { goods = value; } } } public class Clists { public Clists() { //构造函数 //初始化 ListCountValue = 0; Head = null; Tail = null; } /// <summary> /// 表名 /// </summary> private string clistname = ""; public string ClistName { get { return clistname; } set { clistname = value; } } /// <summary> /// 头指针 /// </summary> private ListNode Head; /// <summary> /// 尾指针 /// </summary> private ListNode Tail; /// <summary> /// 当前指针 /// </summary> private ListNode Current; public ListNode current { get { return Current; } set { Current = value; } } /// <summary> /// 链表数据的个数 /// </summary> private int ListCountValue; /// <summary> /// 尾部添加数据 /// </summary> public void Append(Objects DataValue) { ListNode NewNode = new ListNode(DataValue); if (IsNull()) //如果头指针为空 { Head = NewNode; Tail = NewNode; } else { Tail.Next = NewNode; NewNode.Previous = Tail; Tail = NewNode; } Current = NewNode; //链表数据个数加一 ListCountValue += 1; } /// <summary> /// 删除当前的数据 /// </summary> public void Delete() { //若为空链表 if (!IsNull()) { //若删除头 if (IsBof()) { Head = Current.Next; Current = Head; ListCountValue -= 1; return; } //若删除尾 if (IsEof()) { Tail = Current.Previous; Tail.next = null; Current = Tail; ListCountValue -= 1; return; } //若删除中间数据 Current.Previous.Next = Current.Next; Current = Current.Previous; ListCountValue -= 1; return; } } /// <summary> /// 向后移动一个数据 /// </summary> public void MoveNext() { if (!IsEof()) Current = Current.Next; } /// <summary> /// 向前移动一个数据 /// </summary> public void MovePrevious() { if (!IsBof()) Current = Current.Previous; } /// <summary> /// 移动到第一个数据 /// </summary> public void MoveFrist() { Current = Head; } /// <summary> /// 移动到最后一个数据 /// </summary> public void MoveLast() { Current = Tail; } /// <summary> /// 判断是否为空链表 /// </summary> public bool IsNull() { if (ListCountValue == 0) return true; return false; } /// <summary> /// 判断是否为到达尾部 /// </summary> public bool IsEof() { if (Current == Tail) return true; return false; } /// <summary> /// 判断是否为到达头部 /// </summary> public bool IsBof() { if (Current == Head) return true; return false; } public Objects GetCurrentValue() { return Current.goods; } /// <summary> /// 取得链表的数据个数 /// </summary> public int ListCount { get { return ListCountValue; } } /// <summary> /// 清空链表 /// </summary> public void Clear() { MoveFrist(); while (!IsNull()) { //若不为空链表,从尾部删除 Delete(); } } /// <summary> /// 在当前位置前插入数据 /// </summary> public void Insert(Objects DataValue) { ListNode NewNode = new ListNode(DataValue); if (IsNull()) { //为空表，则添加 Append(DataValue); return; } if (IsBof()) { //为头部插入 NewNode.Next = Head; Head.Previous = NewNode; Head = NewNode; Current = Head; ListCountValue += 1; return; } //中间插入 NewNode.Next = Current; NewNode.Previous = Current.Previous; Current.Previous.Next = NewNode; Current.Previous = NewNode; Current = NewNode; ListCountValue += 1; } /// <summary> /// 进行升序插入 /// </summary> public void InsertAscending(Objects InsertValue) { //参数：InsertValue 插入的数据 //为空链表 if (IsNull()) { //添加 Append(InsertValue); return; } //移动到头 MoveFrist(); if ((InsertValue.Number < GetCurrentValue().Number)) { //满足条件，则插入，退出 Insert(InsertValue); return; } while (true) { if (InsertValue.Number < GetCurrentValue().Number) { //满族条件，则插入，退出 Insert(InsertValue); break; } if (IsEof()) { //尾部添加 Append(InsertValue); break; } //移动到下一个指针 MoveNext(); } } /// <summary> /// 进行降序插入 /// </summary> /*货物入库*/ public void InsertUnAscending(Objects InsertValue) { //参数：InsertValue 插入的数据 //为空链表 if (IsNull()) { //添加 Append(InsertValue); return; } //移动到头 MoveFrist(); if (InsertValue.Number > GetCurrentValue().Number) { //满足条件，则插入，退出 Insert(InsertValue); return; } while (true) { if (InsertValue.Number > GetCurrentValue().Number) { //满足条件，则插入，退出 Insert(InsertValue); break; } if (IsEof()) { //尾部添加 Append(InsertValue); break; } //移动到下一个指针 MoveNext(); } } //根据名字查询货物 public Objects FindObjects(string name) { ListNode lnode = Head; if (IsNull()) { return null; } else if (IsEof()) { return null; } else while (lnode.goods.Name != name) { if (lnode.Next == null) { Current = lnode; return null; } lnode = lnode.Next; } Current = lnode; return lnode.goods; } //根据编号查询货物 public Objects FindObjects(int number) { ListNode lnode = Head; if (IsNull()) { return null; } else if (IsEof()) { return null; } else while (lnode.goods.Number != number) { if (lnode.Next == null) { Current = lnode; return null; } lnode = lnode.Next; } Current = lnode; return lnode.goods; } /*货物出库*/ //根据名字删除货物 public Objects DeleteObjects(string name) { Objects bugs; bugs = FindObjects(name); Delete(); return bugs; } //根据编号删除货物 public Objects DeleteObjects(int number) { Objects bugs; bugs = FindObjects(number); Delete(); return bugs; } }}
