大家好，我是公众号3分钟学堂的郭立员，今天继续我们的按键精灵安卓版学习。

前些天下载了一个数独的游戏，简单的难度玩起来还行，稍微难点的解起来就比较费劲了。

于是决定写个脚本来替我完成。

可能有些朋友没玩过数独游戏，我简单说一下它的规则，如上图： 它是一个9*9的格子，分别用1-9数字填入空白格中。

规则：

① 每一行9个数字不重复

② 每一列9个数字不重复

③ 分成九宫，每一宫的9个数字也不重复

在空白格中填写数字使其同时满足上面3个规则，就可以得到一个唯一的数独表格了。

我去写脚本也是围绕着这3个规则去写。

说一下我的思路，拿好小本子记一下。

第一步：把每一个空格用0代替

第二步：从左上角开始，按行去把每一个0用数字1-9替换，替换的数字满足上面说的3个规则。

从第一个0（空格）开始试着填，填写的数字从1开始，如果1不满足规则，填2，以此类推，直到有满足规则的数字，填上临时保存。

第三步：当填到某一空格的时候，发现1到9都不能满足规则，那么说明前面有填错的地方，这时要回溯到上一个空格，然后把之前填的数字加上1再去尝试，如果能继续填下去，就接着填，如果不能了就继续再回溯一个空格，重复这个操作，知道所有的空格都填完。

看一下我做的效果：

代码如下：

Dim arr={_ {0,0,5,0,4,0,0,3,0},_ {8,4,2,0,0,0,0,9,0},_ {0,0,0,9,6,0,0,5,4},_ {0,0,0,6,0,4,8,0,0},_ {6,0,3,0,0,0,7,0,9},_ {0,0,4,3,0,7,0,0,0},_ {4,2,0,0,3,1,0,0,0},_ {0,5,0,0,0,0,3,6,1},_ {0,9,0,0,7,0,4,0,0}_ } file.Write ("/sdcard/pictures/shudu.txt") Dim arrshu,shu,k=0 For 200 If k=0 Then If writeshu(1, 1) Then shu=File.ReadLine("/sdcard/pictures/shudu.txt",1) TracePrint shu TracePrint "清除"&shu file.DeleteLine "/sdcard/pictures/shudu.txt", 1 TracePrint "在",shu,"基础上 1" arrshu=split(shu,",") TracePrint "坐标",arrshu(0),arrshu(1) TracePrint "数",arrshu(2) 1 If arrshu(2) = 9 Then TracePrint "已经是9了，无法继续加" arr[CInt(arrshu(0))][CInt(arrshu(1))] = 0 TracePrint arrshu(0),arrshu(1),"归零" k=1 Else TracePrint "开始加1" For i = arrshu(2) 1 To 9 If CheckUp(arr, i, CInt(arrshu(0)), CInt(arrshu(1))) Then TracePrint "添加新的数字",arrshu(0),arrshu(1),i arr[CInt(arrshu(0))][CInt(arrshu(1))] = i TracePrint arrshu(0)&","&arrshu(1)&","&i file.WriteLine "/sdcard/pictures/shudu.txt", 1, arrshu(0) & "," & arrshu(1) & "," & i Exit For End If If i = 9 Then TracePrint "9个数字都不满足" arr[CInt(arrshu(0))][CInt(arrshu(1))] = 0 TracePrint arrshu(0),arrshu(1),"归零" k=1 End If Next End If End If Else TracePrint "再次打开" shu = File.ReadLine("/sdcard/pictures/shudu.txt", 1) file.DeleteLine "/sdcard/pictures/shudu.txt", 1 TracePrint shu arrshu = Split(shu, ",") arr[CInt(arrshu(0))][CInt(arrshu(1))] = 0 If arrshu(2) = 9 Then TracePrint "已经是9了，无法继续加" arr[CInt(arrshu(0))][CInt(arrshu(1))] = 0 TracePrint arrshu(0),arrshu(1),"归零" Else TracePrint "开始加1" For i = arrshu(2) 1 To 9 If CheckUp(arr, i, CInt(arrshu(0)), CInt(arrshu(1))) Then TracePrint "添加新的数字",arrshu(0),arrshu(1),i arr[CInt(arrshu(0))][CInt(arrshu(1))] = i TracePrint arrshu(0)&","&arrshu(1)&","&i file.WriteLine "/sdcard/pictures/shudu.txt", 1, arrshu(0) & "," & arrshu(1) & "," & i k=0 Exit For End If If i = 9 Then TracePrint "9个数字都不满足" TracePrint arrshu(0),arrshu(1),"归零" arr[CInt(arrshu(0))][CInt(arrshu(1))] =0 End If Next End If End If Next For i = 1 To 9 Dim q="" For j = 1 To 9 q=q&arr[i][j]&" ," Next TracePrint q Next Function writeshu(a,b) For i = 1 To 9 For j = 1 To 9 If arr[i][j] = 0 Then traceprint "["&i,j&"]", arr[i][j] For num = 1 To 9 If CheckUp(arr, num, i, j) Then arr[i][j] = num traceprint "修改后["&i,j&"]", arr[i][j] file.WriteLine("/sdcard/pictures/shudu.txt",1,i&","&j&","&num) Exit For End If If num = 9 Then TracePrint "没有符合要求的" writeshu=true Exit Function End If Next End If If i = 9 and j = 9 Then For i = 1 To 9 q="" For j = 1 To 9 q=q&arr[i][j]&" ," Next TracePrint q Next EndScript End If Next Next End Function Function CheckUp(arr,num,row,col) dim row3= int((row-1)/3)*3 1 dim col3= int((col-1)/3)*3 1 For i = 1 To 9 If arr[row][i] = num Then CheckUp=False Exit Function End If If i = 9 Then TracePrint "第"&row&"行没有数字"&num For j = 1 To 9 If arr[j][col] = num Then CheckUp=False Exit Function End If If j = 9 Then TracePrint "第"&col&"列没有数字"&num For s = row3 To row3 2 For t = col3 To col3 2 If arr[s][t] = num Then CheckUp=False Exit Function End If If s = row3 2 and t = col3 2 Then CheckUp=true TracePrint "九宫格内没有重复的" End If Next Next End If Next End If Next End Function

这个代码写了一个上午，写的我头都大了，反反复复测试了好多遍，目前中等难度的数独都可以解出来。

因为没有做大量的测试，肯定会有bug，懒得弄了，就这样了。

好了今天的内容就这些，觉得还行，点个赞吧，更多内容查看历史文章。