C# wpf数独的解法

按照人的思维来做的。

MyPos 就是 数组 行 列值。

 

 

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public  class CalcShuDu     {         public int[][] IArrSd;         public int IBlankCount;         public Dictionary<MyPos, List<int>> DicCanFill;         public Dictionary<MyPos, List<int>> DicFilling;         Dictionary<MyPos, int> dic = new Dictionary<MyPos, int>();         public CalcShuDu(int[][] arr)         {                            IArrSd = arr;               for (int i = 0; i < arr.Length; i++)             {                 for (int j = 0; j < arr[i].Length; j++)                 {                     if (arr[i][j] == 0)                     {                         IBlankCount++;                         MyPos p = new MyPos(i, j);                         dic.Add(p, 0);                                              }                 }             }           }           public Dictionary<MyPos, int> GetAnswer()         {             DicFilling = new Dictionary<MyPos, List<int>>();               GetCanFill();             var keys = dic.Keys.ToList();               int fillCount = 0;             bool isAdd = false;                          while (fillCount<= IBlankCount-1)             {                 isAdd = false;                   if (fillCount < 0)                 {                     return dic;                 }                   var key = keys[fillCount];                   if (DicFilling[key].Count>= DicCanFill[key].Count)                 {                       DicFilling[key].Clear();                     IArrSd[key.X][key.Y] = 0;                     fillCount -= 1;                     key= keys[fillCount];                     IArrSd[key.X][key.Y] = 0;                                           continue;                 }                   var listCanFill = GetCanFill(key);                   if (listCanFill.Count == 0)                 {                     IArrSd[key.X][key.Y] = 0;                     fillCount -= 1;                     key = keys[fillCount];                       IArrSd[key.X][key.Y] = 0;                 }                 else                 {                     foreach (var item in listCanFill)                     {                         if (!DicFilling[key].Contains(item))                         {                             IArrSd[key.X][ key.Y] = item;                             DicFilling[key].Add(item);                             fillCount += 1;                             dic[key] = item;                             isAdd = true;                               break;                         }                     }                       if (!isAdd)                     {                         IArrSd[key.X][key.Y] = 0;                         DicFilling[key].Clear();                         fillCount -= 1;                         key=keys[fillCount];                         IArrSd[key.X][key.Y] = 0;                     }                   }             }             return dic;         }           public void GetCanFill()         {             DicCanFill = new Dictionary<MyPos, List<int>>();                           var keys = dic.Keys.ToList();             foreach (var key in keys)             {                   List<int> list1 = new List<int>();                 DicFilling.Add(key, list1);                 List<int> list = new List<int>();                     int i = key.X;                 int j = key.Y;                   var arr = IArrSd[i];                   for (int k = 0; k < arr.Length; k++)                 {                     if(arr[k] != 0)                     {                         list.Add(arr[k]);                     }                 }                   for (int m = 0; m < 9; m++)                 {                     if (IArrSd[m][j] != 0)                     {                         if(!list.Contains(IArrSd[m][j]))                         list.Add(IArrSd[m][j]);                     }                 }                   var ninePos = GetNinePos(key);                   for (int m = ninePos.X; m < ninePos.X+3; m++)                 {                     for (int k = ninePos.Y; k < ninePos.Y+3; k++)                     {                         if (IArrSd[m][k] != 0)                         {                             if (!list.Contains(IArrSd[m][k]))                                 list.Add(IArrSd[m][k]);                         }                     }                 }                 list.Sort();                   var lstCanFill=new List<int>();                   for (int m   = 1; m < 10; m++)                 {                     if (!list.Contains(m))                     {                         lstCanFill.Add(m);                     }                 }                 DicCanFill.Add(key, lstCanFill);               }         }           public MyPos GetNinePos(MyPos pos)         {             int i = 0;             int j = 0;             int x=pos.X;             int y=pos.Y;             if (x >= 0 && x < 3)             {                 if (y >= 0 && y < 3)                 {                     i = 0;                     j= 0;                 }                 else if (y >= 3 && y < 6)                 {                     i = 3;                     j = 0;                 }                 else                 {                     i = 6;                     j = 0;                 }             }             else if (x >= 3 && x < 6)             {                 if (y >= 0 && y < 3)                 {                     i = 0;                     j = 3;                 }                 else if (y >= 3 && y < 6)                 {                     i = 3;                     j = 3;                 }                 else                 {                     i = 6;                     j = 3;                 }             }             else             {                 if (y >= 0 && y < 3)                 {                     i = 0;                     j = 6;                 }                 else if (y >= 3 && y < 6)                 {                     i = 3;                     j = 6;                 }                 else                 {                     i = 6;                     j = 6;                 }             }             return new MyPos(j,i);         }               public List<int>GetCanFill(MyPos key)         {                             var list = new List<int>();                   int i = key.X;                 int j = key.Y;                   var arr = IArrSd[i];                   for (int k = 0; k < arr.Length; k++)                 {                     if (arr[k] != 0)                     {                         list.Add(arr[k]);                     }                 }                   for (int m = 0; m < 9; m++)                 {                     if (IArrSd[m][j] != 0)                     {                         if (!list.Contains(IArrSd[m][j]))                             list.Add(IArrSd[m][j]);                     }                 }                   var ninePos = GetNinePos(key);                   for (int m = ninePos.X; m < ninePos.X + 3; m++)                 {                     for (int k = ninePos.Y; k < ninePos.Y + 3; k++)                     {                         if (IArrSd[m][k] != 0)                         {                             if (!list.Contains(IArrSd[m][k]))                                 list.Add(IArrSd[m][k]);                         }                     }                 }                 list.Sort();                   var lstCanFill = new List<int>();                   for (int m = 1; m < 10; m++)                 {                     if (!list.Contains(m))                     {                         lstCanFill.Add(m);                     }                 }                   return lstCanFill;         }     }