sudoku solving strategies

Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells is indicated by the character ‘.‘ .Assume that there would be is only one unique solution.A Sudoku Puzzle ...... and its solution numbers marked in red.The problem of solving Sudoku is the extension on the basis of the previous Valid

Valid SudokuDetermine if a Sudoku is valid, according To:sudoku puzzles-the Rules.The Sudoku board could be partially filled, where empty cells is filled with the character '.A partially filled sudoku which is valid.Note:A Valid Sudoku board (partially filled) is not necessarily solvable. Only the filled cells need to

Python implements the code for solving the sudoku program. I accidentally found that a Sudoku game came along with the linux system and played a few games. Instead, I was a Sudoku cainiao. I had never played it before, and I had to make a mess in a few steps. Therefore, it is fun to use the powerful computing power of

After analyzing the source code of Muduo Network Library, we try to complete an efficient Sudoku and eight-digit problem solving server.First of all, why choose these two questions? Sudoku has always been a favorite problem for aboutspeaker teachers, and has been mentioned several times in the Muduo network library for example. Eight digital problem is my favorit

can also.The checked function and the show function are very simple and are not mentioned much.I give the Sudoku example is a single result of the Sudoku, is more difficult, if you are interested, you can search the other Sudoku to test this code it!!This method can enumerate all the solutions of a Sudoku.Expand:This loop + recursive + backtracking mode can solv

TopicDetermine if a Sudoku is valid, according To:sudoku puzzles-the Rules.The Sudoku board could be partially filled, where empty cells is filled with the character '.Note:A Valid Sudoku board (partially filled) is not necessarily solvable. Only the filled cells need to be validated."Problem Analysis"There are many solutions to this problem, which can be spent i

A few days ago LP play Sudoku, play to master a variety of abused, I looked to say, minutes to help you do it out,The result is of course not done.So the internet search the next Sudoku code, read the next C code, mostly recursion and the like (such as http://blog.sina.com.cn/s/blog_9e16dc4d01013s1y.html)So think, can this approach be implemented in Erlang?Tried, found no, because 2-dimensional arrays, poin

reading, the debugging information is not deleted. The Code is as follows: Sudoku solving program ScriptFunction keygo (evt, obj ){Key = window. event? Evt. keyCode: evt. which;Var next = obj. tabIndex;Var inputs = document. getElementsByTagName ("input ");If (key = 38) {// elseIf (next-9> = 0 ){Inputs [next-9]. select ()}}If (key = 40) {// elseIf (next + 9 Inputs [next + 9]. select ()}}If (key = 37)

Import NumPy as NPImport SysSys.setrecursionlimit (#例如这里设置为一百万)def get1 (n):If nreturn 0If nReturn 3Return 6def get2 (n):If nReturn 3If nReturn 6Return 9def get3 (arr,i,j):A1=list (Arr[i,:])A2=list (Arr[:,j])A3=list (Arr[get1 (i): Get2 (i), Get1 (j): Get2 (j)].reshape (1,-1) [0])A=set (A1+A2+A3)Return b-adef SD (ARR,DEP):Count[0]+=1If Dep==len (l):Result.append (arr)ElseX,Y=L[DEP]Lac=get3 (Arr,x,y)If Len (LAC) >0 and Len (result) ==0:For I in Lac:Ac=arr.copy ()Ac[x,y]=iSD (AC,DEP+1)array= [[5,3,

The basic framework of the The basic framework of backtracking algorithm isfunction name (int cnt) {for (){if () {}else{Function name (cnt+1);}}}Backtracking algorithm (solving arbitrary order Sudoku)