九宫格移动算法实现

用.Net实现九宫格移动算法

说明：在3*3的格子里，假设一个格子为空（在程序里是用0代表），其他格子可以移动到这个格子上，有多少种可能？答案是9的阶乘除以2=181440种，以下为程序实现，输出到d:\GridNine.txt文件中。程序共两个类Program和Mygrid。以下为代码：

Program：

--------------------------------------------------------------------------------------------using System;

using System.Collections.Generic;

using System.Windows.Forms;

using System.IO;

namespace WindowsApplication1

{

static class Program

{

static int gen = 0;

///

///应用程序的主入口点。

///

[STAThread]

static void Main()

{

//Application.EnableVisualStyles();

//Application.SetCompatibleTextRenderingDefault(false);

//Application.Run(new Form1());

List list = new List();

Mygrid iniGrid = new Mygrid('1', '2', '3', '4', '0', '5', '6', '7', '8');

list.Add(iniGrid);

iniGrid.Genaration = gen;

gen = gen + 1;

//以初始集合开始衍生

ComputeAll(null,list);

Console.WriteLine(list.Count);

string[] output = new string[list.Count];

for (int i = 0; i < list.Count; i++)

{

Mygrid single = list[i];

output[i] = single.GridToStringAll();

}

string context = string.Join(@"

", output);

using (StreamWriter savefile = new StreamWriter(@"d:\GridNine.txt"))

{

savefile.WriteLine(context);

savefile.Close();

}

MessageBox.Show(@"移动步骤保存成功！文件为：d:\GridNine.txt");

}

///

///新加入

///全部包含新加入

static void ComputeAll(List addList,List list)

{

List newList;

if (addList == null)

{

//计算当前list中变换得来的全部

newList = GetAllNew(list);

}

else

{

newList = GetAllNew(addList);

}

//比较变换的是否存在于list中，更新list，如果list被更新，返回true，否则返回false

//获得新放入的list

List resutl = IsUpdate(list, newList);

//循环调用

if (resutl.Count !=0)

{

ComputeAll(resutl,list);

}

static List GetAllNew(List list)

{

//新建一个list，循环放变换之后的，去掉重复的

List newList = new List();

foreach (Mygrid grid in list)

{

List changeList = grid.Change(grid);

addChangeList(newList, changeList);

}

return newList;

}

private static void addChangeList(List newList, List changeList) {

foreach (Mygrid change in changeList)

{

bool flag = false;

List tmp = new List();

foreach (Mygrid newSingel in newList)

{

if (https://www.360docs.net/doc/5e12524665.html,pareGrid(change))

{

flag = true;

break;

}

if (!flag)

{

newList.Add(change);

}

private static List IsUpdate(List list, List newList)

{

List result = new List();

foreach (Mygrid change in newList)

{

bool flag = false;

foreach (Mygrid oldSingle in list)

{

if (https://www.360docs.net/doc/5e12524665.html,pareGrid(change))

{

flag = true;

break;

}

if (!flag)

{

result.Add(change);

}

//统一放入

foreach (Mygrid tmpSingel in result)

{

tmpSingel.Genaration = gen;

list.Add(tmpSingel);

}

gen = gen + 1;

return result;

}

//合并两个集合，返回一个新的集合

private static List ComList(List oldlist, List newList)

{

List result = new List();

foreach (Mygrid tmp in oldlist)

{

result.Add(tmp);

}

foreach (Mygrid tmp in newList)

{

result.Add(tmp);

}

return result;

}

Mygrid：

-------------------------------------------------------------------------------------------- using System;

using System.Collections.Generic;

using System.Text;

namespace WindowsApplication1

{

class Mygrid

{

private char grid1;

private char grid2;

private char grid3;

private char grid4;

private char grid5;

private char grid6;

private char grid7;

private char grid8;

private char grid9;

private int genaration;

public int Genaration

{

get { return genaration; }

set { genaration = value; }

}

public Mygrid()

{

grid1 = ' ';

grid2 = ' ';

grid3 = ' ';

grid4 = ' ';

grid5 = ' ';

grid6 = ' ';

grid7 = ' ';

grid8 = ' ';

grid9 = ' ';

}

public Mygrid(char grid1, char grid2, char grid3, char grid4, char grid5, char grid6, char grid7, char grid8, char grid9)

{

this.grid1 = grid1;

this.grid2 = grid2;

this.grid3 = grid3;

this.grid4 = grid4;

this.grid5 = grid5;

this.grid6 = grid6;

this.grid7 = grid7;

this.grid8 = grid8;

this.grid9 = grid9;

}

//传入old获得新的

public List Change(Mygrid old)

{

List changeList = new List();

int zeroGrid=WhereZeroIs(old);

switch (zeroGrid)

{

case 1:

changeList.Add(new

Mygrid(old.grid2,old.grid1,old.grid3,old.grid4,old.grid5,old.grid6,old.grid7,old.grid8,old.g rid9));

changeList.Add(new Mygrid(old.grid4, old.grid2, old.grid3, old.grid1,