using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Sudoku.UI
{
public partial class Form1 : Form
{
private int[,] _Area=new int[10,10];
private List<XB> _BList = new List<XB>();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
var r=Do(_Area);
if (!r)
{
MessageBox.Show("填充失败!");
}
else
{
MessageBox.Show("完成了!");
}
}
private void button2_Click(object sender, EventArgs e)
{
Init();
}
private void Init()
{
// var data = "001003097;006700030;023980500;107008900;008500100;004309608;005032710;070005200;810600300";
//var data = "005480000;001300002;900000010;000200700;010000060;003009000;090000008;400003500;000067400";
var data = "000000000;000000000;000000000;000000000;000000000;000000000;000000000;000000000;000000000";
var arr = data.Split(";".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
for (int i = 1; i <= 9; i++)
{
for (int j = 1; j <= 9; j++)
{
_Area[i, j] = int.Parse(arr[i - 1].Substring(j - 1, 1));
}
}
Show();
_BList.Add(new XB() { RBegin = 1, REnd = 3, CBegin = 1, CEnd = 3});
_BList.Add(new XB() { RBegin = 1, REnd = 3, CBegin = 4, CEnd = 6 });
_BList.Add(new XB() { RBegin = 1, REnd = 3, CBegin = 7, CEnd = 9 });
_BList.Add(new XB() { RBegin = 4, REnd = 6, CBegin = 1, CEnd = 3 });
_BList.Add(new XB() { RBegin = 4, REnd = 6, CBegin = 4, CEnd = 6 });
_BList.Add(new XB() { RBegin = 4, REnd = 6, CBegin = 7, CEnd = 9 });
_BList.Add(new XB() { RBegin = 7, REnd = 9, CBegin = 1, CEnd = 3 });
_BList.Add(new XB() { RBegin = 7, REnd = 9, CBegin = 4, CEnd = 6 });
_BList.Add(new XB() { RBegin = 7, REnd = 9, CBegin = 7, CEnd = 9 });
}
private int[,] CopyArray(int[,] arr)
{
var tArr = new int[arr.GetLength(0), arr.GetLength(1)];
for (int i = 0; i < arr.GetLength(0); i++)
{
for (int j = 0; j < arr.GetLength(1); j++)
{
tArr[i, j] = arr[i, j];
}
}
return tArr;
}
private bool Do(int[,] area)
{
var arrTmp = CopyArray(area);
var cell = GetCell(arrTmp);
if (cell != null)
{
foreach (var v in cell.Candidate)
{
arrTmp[cell.R, cell.C] = v;
//if (!CheckPart(arrTmp))
//{
// continue;
//}
if (Do(arrTmp))
{
return true;
}
}
return false;
}
else
{
if (CheckFinally(arrTmp))
{
_Area = CopyArray(arrTmp);
Show();
return true;
}
return false;
}
}
private bool CheckFinally(int[,] area)
{
#region 行检测
for (int row = 1; row <= 9; row++)
{
var count=new int[10];
for (int i = 1; i <=9; i++)
{
count[area[row, i]] = 1;
}
for (int i = 1; i <= 9; i++)
{
if (count[i] == 0)
{
return false; //行扫描失败
}
}
}
#endregion
#region 列检测
for (int col = 1; col <= 9; col++)
{
var count = new int[10];
for (int i = 1; i <= 9; i++)
{
count[area[i, col]] = 1;
}
for (int i = 1; i <= 9; i++)
{
if (count[i] == 0)
{
return false; //列扫描失败
}
}
}
#endregion
#region B检测
foreach (var b in _BList)
{
var count = new int[10];
for (int row = b.RBegin; row <= b.REnd; row++)
{
for (int col = b.CBegin; col <= b.CEnd; col++)
{
count[area[row, col]] = 1;
}
}
for (int index = 1; index <= 9; index++)
{
if (count[index] == 0)
{
return false; //列扫描失败
}
}
}
#endregion
return true;
}
private bool CheckPart(int[,] area)
{
#region 行检测
for (int row = 1; row <= 9; row++)
{
var count = new int[10];
for (int i = 1; i <= 9; i++)
{
count[area[row, i]]++;
}
for (int i = 1; i <= 9; i++)
{
if (count[i] >1)
{
return false; //行扫描失败
}
}
}
#endregion
#region 列检测
for (int col = 1; col <= 9; col++)
{
var count = new int[10];
for (int i = 1; i <= 9; i++)
{
count[area[i, col]]++;
}
for (int i = 1; i <= 9; i++)
{
if (count[i]>1)
{
return false; //列扫描失败
}
}
}
#endregion
#region B检测
foreach (var b in _BList)
{
var count = new int[10];
for (int row = b.RBegin; row <= b.REnd; row++)
{
for (int col = b.CBegin; col <= b.CEnd; col++)
{
count[area[row, col]]++;
}
}
for (int index = 1; index <= 9; index++)
{
if (count[index] >1)
{
return false; //列扫描失败
}
}
}
#endregion
return true;
}
private XCell GetCell(int[,] area)
{
XCell cell = null;
for (int row = 1; row <= 9; row++)
{
for (int col= 1; col <= 9; col++)
{
if (area[row, col] == 0)
{
cell = new XCell();
cell.R = row; cell.C = col;
#region 设定宫数
if (row <= 3 && col <= 3)
{
cell.B = 1;
}
else if (row<=3 && col >=4 && col<=6)
{
cell.B = 2;
}
else if (row<=3 && col>=6 )
{
cell.B = 3;
}
else if (row>=3 && row <= 6 && col <= 3)
{
cell.B = 4;
}
else if (row >= 4 && row <= 6 && col >= 4 && col <= 6)
{
cell.B = 5;
}
else if (row >= 4 && row <= 6 && col >= 7)
{
cell.B = 6;
}
else if (row >= 7 && col <= 3)
{
cell.B = 7;
}
else if (row >= 7 && col >= 4 && col <= 6)
{
cell.B = 8;
}
else if (row >= 7 && col >= 7)
{
cell.B = 9;
}
#endregion
#region 计算可能取值
var count=new int[10];
for (int index = 1; index <= 9; index++)
{
count[area[cell.R, index]] = 1;
}
for (int index = 1; index <= 9; index++)
{
count[area[index, cell.C]] = 1;
}
#region B检测
var b = _BList[cell.B - 1];
for (int rowIndex = b.RBegin; rowIndex <= b.REnd; rowIndex++)
{
for (int colIndex = b.CBegin; colIndex <= b.CEnd; colIndex++)
{
count[area[rowIndex, colIndex]]=1;
}
}
#endregion
for (int index = 1; index < 10; index++)
{
if (count[index] == 0)
{
cell.Candidate.Add(index);
}
}
#endregion
return cell;
}
}
}
return cell;
}
private void Show()
{
var list = new List<XRow>();
for (int i = 1; i <= 9; i++)
{
var row = new XRow();
list.Add(row);
for (int j = 1; j <= 9; j++)
{
row[j] = _Area[i, j];
}
}
xRowBindingSource.Clear();
xRowBindingSource.DataSource = list;
}
private void Form1_Load(object sender, EventArgs e)
{
button2.PerformClick();
}
}
}
