solve sudoku

Sudoku SolverClass Solution: # @param {character[][]} board # @return {void} do not return anything, modify board In-place Instea D. def solvesudoku (self, Board): def check (x, y): temp = board[x][y]; Board[x][y] = '. ' For I in Xrange (9): if board[i][y] = = Temp:return False for J in Xrange (9): if B OARD[X][J] = = Temp:return False for i in Xrange (3): for J in Xrange (3): if B oard[(X/3) + i][(Y/3) * + j] = = Temp:return False Board[x]

Ideas: DFS + Sudoku game rules. The rule of the sudoku game is: Duplicate numbers are not allowed in the same column of the same row, and duplicate numbers are not allowed in every 9 intrauterine devices. 1 class Solution { 2 public: 3 bool isValid(vector

Example of how to implement a Sudoku Algorithm in python This example describes how to implement the sudoku Algorithm in python. Share it with you for your reference. The details are as follows: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70

Have you ever played this popular Sudoku game, and now you can download the free smartphone version. Sudoku introduction: DT is a math puzzle game developed in the United States and developed in Japan from the end of the 18th century. The jigsaw puzzle is a square shape of a three-cell-width × three-cell-height puzzle. Each cell is subdivided into a nine-cell-lattice. Fill in numbers ranging from 1 to 9

(ARR, 0, 81 * sizeof (INT )); If (argc = 2 ! Strcmp ("/? ", Argv [1]) | argc = 1){Printf ("finding the solution of the sudoku/n ");Printf ("Sudoku data path/n ");Return 0;}If (argc = 3 | argc = 2){K = 0;For (I = 0; I {For (j = 0; j {Ch = argv [1] [k];Arr [I] [J] = atoi ( Ch );// Sscanf ( argv [1] [K], "% d", arr [I] [J]);K ++;If (! Arr [I] [J]){E. x = I;E. Y = J;Addlistelem (E );}}}If (addcount (ARR )){//

This arctical'll also is published in 中文版 at http://www.cnblogs.com/LarryAtCNBlog/p/4307965.htmlSudoku is a crossword puzzle, widely known is the 9x9 type, the following is an algorithm, that is, each time from the number of can be determined to calculate the possible values of the peer or the same column, if the possible value is only 1, then you can directly determine the value of the cell, if the number of possible values is greater than or equal to 2, then the hypothesis of looping and cell

Sudoku is a numbers filling game, most known by people are 9x9 class, the algorithm is using confirmed numbers-get all P Ossible numbers for each cell, if the number if possible numbers for a cell was 1, then the cell value confirmed, if Greate R or equal than 2, script makes loop and calculates a potential answer. Since answers is isn't unique, so a parameter was added to specify what many answers to return.Param(# returns several answers [int] $HowM

Custom Shape tool There is a nine Bongtu, if not on the append can be displayed. No ruler, no size freehand drawing Nine Sudoku Method: Brush Tip 2 to 3 pixels (one visible) hold down the SHIFT key and click on the top left corner of the canvas and then click the mouse in the lower right corner to get a diagonal line, in the same way, draw a slash in the upper right corner to the lower left corner, and get two x intersection lines. Move the mouse o

Sudoku is a long history, but also a particularly popular mathematical intelligence game, it not only has a strong interest, but also exercise our logical thinking ability, I in the "Strongest Brain" program also saw this project. Sudoku Game "Chessboard" is composed of 9,981 small squares, players require: Players in each square, fill in 1 to 9 of any number, so that the entire chessboard of each column,

A piece of code of the sudoku game forgot to use a search algorithm with the depth-first or breadth-first, and used some probability algorithms for improvement. In this case, I was afraid that I would accidentally delete it in a few years, g. JS seems to be included in another blog post, so I will not post it here.At the beginning, this code had some reasons. The ancients said: the mountains are not famous for being high, and the water is not famous f

I just saw that many people use DFS + Pruning for Sudoku .. What's wrong with my DLX... But think about the fact that this search pruning is really a lot, but it's still faster than DLX... # Include # Include String . H> # Include Using Namespace STD; # Define N 300000 # Define INF 0x3fffffff Char G [ 10 ] [ 10 ]; Int Ans [ 1000 ]; Int U [ 5000 ], D [ 5000 ], R [ 5000 ], L [ 5000 ], Num [ 5000 ], H [ 1000 ], Save [ 5000 ], Save1 [ 5000 ]

Question Portal It is obviously a search. However, there is no pruning at the beginning, and the brute force search starts from,NaturallyT has 6 points. #include Consider pruning. From the perspective of human intelligenceAlthough I have never playedWe must start from a region with more options, because fewer decisions are available for us. So here we can also use this idea for reference. Every time we make statistics on the number of columns in each row, we have already filled in the number of

DFS ). A very sad question is that the three arrays split into [9] [9] and thus cross-border wa. Then there are empty rows between the two sets of outputs, but the empty rows cannot be output after the last group. PE many times. #include HDU 1426 Sudoku killer

=Mcolumnloc[x]; Head->left->right = head->Right ; Head->right->left = head->Left ; Auto P= head->Down ; while(P! =head) {Auto H1=p; Auto Q= h1->Right ; while(Q! =H1) {Mcolumncount[q->y]--; Q->up->down = q->Down ; Q->down->up = q->Up ; Q= q->Right ; } P= p->Down ; }}voidExactcover::uncover (intX) {Auto Head=Mcolumnloc[x]; Head->left->right =Head; Head->right->left =Head; Auto P= head->Up ; while(P! =head) {Auto H1=p; Auto Q= h1->Left ; while(Q! =H1) {Mcolumncount[q->y]++; Q->up->down =Q; Q->d

This problem are relatively easy. The challenge is what to get a concise code. This post shares a very elegant one which traverses each cell of the board only once. The code is rewritten below.1 classSolution {2 Public:3 BOOLIsvalidsudoku (vectorChar>>Board) {4 BOOLrow[9][9] = {false}, col[9][9] = {false}, box[9][9] = {false};5 for(inti =0; I 9; i++) {6 for(intj =0; J 9; J + +) {7 if(Board[i][j]! ='.') {8 intnum = board[i][j]

Idea: Record the number of each column in each row that has appeared, the data is relatively weakIn addition POJ 3074 3076 must use pruning strategy, but to achieve more trouble, or after the DLX to do it againaccepted160k0ms#includePOJ 2676/2918 Sudoku (DFS)

determines whether the numbers in rows, columns, or nine are duplicated. Follow the rows, columns, and nine Gongge to check.BOOLValidsudoku (ConstvectorChar>>Board) { BOOLused[9]; for(inti =0; I 9; i++) {Fill (used, used+9,false); //Check Row for(intj =0; J 9; J + +) { if(!Check (Board[i][j], used))return false; } fill (used, used+9,false); //Check Column for(intj =0; J 9; J + +) { if(!Check (Board[

1 //occupyed_1 Check whether rows occupy2 //occupyed_2 Check whether the column occupies3 //Occupyed_3 Check if the block is occupied4 BOOLIsvalidsudoku (vectorChar>>Board)5 {6 intoccupyed_1[9][9], occupyed_2[9][9], occupyed_3[9][9];7 for(inti =0; I 9; ++i) {8 for(intj =0; J 9; ++j) {9OCCUPYED_1[I][J] =0;TenOCCUPYED_2[I][J] =0; OneOCCUPYED_3[I][J] =0; A } - } - the intRowsize =board.size (); - intColsize = board[0].size (); - for(inti =0; i i) { -

Class Sudokumatrix {Private int[][] Matrix = new Int[][] {{0, 5, 0, 6, 0, 1, 0, 0, 0},{0, 0, 7, 0, 9, 0, 0, 2, 0},{3, 0, 0, 0, 0, 4, 0, 0, 1},{9, 0, 0, 0, 0, 0, 1, 3, 0},{0, 0, 8, 0, 5, 0, 7, 0, 0},{0, 2, 6, 0, 0, 0, 0, 0, 8},{7, 0, 0, 9, 0, 0, 0, 0, 5},{0, 9, 0, 0, 4, 0, 3, 0, 0},{0, 0, 0, 2, 0, 8, 0, 1, 0},};public void Run () {Calc ();}private void Calc () {int[] coordinate = Getnextdata ();int m = coordinate[0];int n = coordinate[1];for (int k = 1; k if (CheckNumber (m,n,k)) {Matrix[m][n] =

HDU_4069 I remember the day before when I was discussing the Data independence issue in the group, I realized that I had another dancing links thing. As a result, the second day of the Fuzhou online competition had a Data independence issue ...... After learning the Dancing Links, I finally dropped this question A. the difference between this question and the ordinary Sudoku lies in the grouping problem. In the past, it was A small palace that could