sudoku solutions sudoku solver

Sudoku Solver, sudokusolver Solving the sudoku Problem class Solution {public: bool isValid(vector

Original title AddressBacktracking, nothing to say.1 BOOLrow[9][9];2 BOOLcol[9][9];3 BOOLgrid[9][9];4 BOOLmark[9][9];5 6 BOOLSolve (vectorChar> > board,intRintc) {7 if(r = =9)8 return true;9 if(Mark[r][c])Ten returnSolve (board, R + (c +1) /9, (c +1) %9); One for(inti =0; I 9; i++) { A if(!row[r][i] !col[c][i] !grid[(R/3) *3+ C/3][i]) { -Row[r][i] = Col[c][i] = grid[(R/3) *3+ C/3][i] =true; -BOARD[R][C] = i +'1'; the if(Solve (board, R + (c +1) /9, (c +1) %9)) -

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

filled in the wrong, then continue to fall back to the previous one, ... So repeated.4. If there is a solution to this sudoku, we will always encounter situations where every lattice happens to be right. If this sudoku is not solved, then we will encounter "the first lattice tried to 1~9 all the numbers are not" situation.Implemented in C + + for a bit 2. Solving the above example quickly, basically is the

hdoj on the topic: Problem Description since the first Sudoku World championships from March 10, 2006 to 11th, Sudoku has become more and more popular with people. It is said that in the 2008 Beijing Olympic Games, the Sudoku will be listed as a separate project to compete, the champion will have the possibility to obtain a huge prize ——— HDU free 7th Tour plus

Test instructions: Give a 9*9 matrix, some grids have been filled in, some are. Represents not filled in. Ask any set of solutions so that each row contains 1~9, each column contains 1~9, and each small rectangle (3*3) contains 1~9.Resolution: Accurate coverage of DLX classic topics, each line represents the case to be filled, a total of 81*4 rows, the first 81 lines represent the line I J column number, the second 81 column represents the first row o

Sudoku Time limit:2000 ms Memory limit:65536 K Total submissions:13665 Accepted:6767 Special Judge DescriptionSudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the figure. in some of the cells are written decimal digits from 1 to 9. the other cells are empty. the goal is to fill the empty cells with decimal digits from 1 to 9, one digit pe

Handbook Klsudoku traditional Sudoku game software user manual version 1.1Statement This manual can be obtained from the project wiki address to the latest version: http://code.google.com/p/klsudoku/wiki/HandBook Authorization statement: without the authorization of ttylikl, all sections of this manual shall not be reproduced by any media or commercial organization. An individual can repost all or part of the chapters to the personal network media (su

correct Sudoku matrix: 2. An incorrect Sudoku matrix: Iv. Summary This question does not require any algorithm. You only need to design matrix operations and usemapUsed to store each row, column, or cell.1~9The number of times each number appears. If a Sudoku is found to be larger than one, the Sudoku is immediately

reducing the overall complexity. By exchanging the method, the set will generate a final extension into 20 final, so that the problem size is reduced by nearly 20 times times, the generation of 1e5 of the use case only need about 4s, greatly shorten the time. The following diagram shows the modified program performance.In this way, we continue to improve, directly generate 20 Sudoku as a seed matrix, and then randomly expand the 20 matrices into 1000

Taking a Sudoku solver as an example, this paper reviews a variety of design schemes of concurrent network service programs, and introduces two common techniques for writing multithreaded servers using Muduo network library. The previous examples show Muduo's ability and convenience in writing single-threaded concurrent Web service programs, and today we look at its performance in multithreading. See code

, where the column, where the 3 * 3 squares are already existing the same number, if present, return false, otherwise, add this number to the row, column, 3 * 3 in the record of the grid.So you need to record each row separately, each column, every 3 * 3 squares have those numbers appear, in fact, is 3 two-dimensional array records what numbers appear in each row,vector for 3 * 3 squares, here with vector Representation method, assuming that the current position is (I, j), the number is n Rows[i

ignore whether there are no or multiple solutions to the problem, just search (as described in the previous article, our DFS and BFS algorithms have a template parameter, which can be determined by the user to find only one solution or find all solutions ). Now we start to implement this Sudoku program. The DFS and BFS algorithms mentioned above are generic algo

legitimate.Three. Sample code#include #include #include using namespace STD;classsolution{ Public:BOOLIsvalidsudoku ( vectorvectorchar> > Board) { Mapchar, int>Sudokumap; for(inti =0; I 9; i++) {sudokumap.clear (); for(intj =0; J 9; J + +) {sudokumap[board[i][j]]++;if((board[i][j]! ='. ') (Sudokumap[board[i][j]] >1))return false; } } for(inti =0; I 9; i++) {sudokumap.clear (); for(intj =0; J 9; J + +) {sudokumap[board[j][i]]++;if((board[j][i]! ='. ') (Sudokumap[board[j][i]] >1))return

row = {}, col = {}, Subsudo = {} //auxiliary variable for (let k = 0; k let cur1 = Sudo[i][k], CUR2 = Sudo[k][j] if (cur1) { //The current element is already in the row, optimizing the judgment of 0, the key is 0 value 0, no additional judgment is required (ROW[CUR1) ) return 1; Return error code else Row[cur1] = cur1 //Current element not present in row, save in auxiliary variable } if

same number are counted in accordance with, anyway, the answer only one, to meet the nature of the game, let the players explore themselves, direct appearance of the same number, that is, the error, immediatelyThe number cannot be entered again, but there is no end-of-game hint, as the game continues. Only know all the grid is filled, and there is no error, the game table will be compared with the answer table, in fact, is generally correct, and then will pop out the success of the prompt.Diffi

Sudoku game in the square of the 9x9, divided into 3x3 small squares, known as the "district." Sudoku begins with a grid that has been filled in with numbers. The goal of Sudoku is to fill spaces with numbers between 1 and 9 according to the following rules: Each number can appear only once per row, in each column, and in each area. I implemented a

You must have heard of the Sudoku game. such as "Figure 1.png", the player needs to be based on the known number on the 9x9 disk, to infer all the remaining space figures, and meet each row, each column, each of the same color nine within the number contains 1-9, do not repeat. The answer to Sudoku is unique, so many solutions are also called no

solve an entire permutation problem, you cannot disrupt the arrangement of recursive calls, or it may result in duplicate solutions. Instead of sort, use set to go heavy. Replace the highlighted part of the above code with the highlighted part of the code below, this time AC.Class Solution {public:vectorHowever, the disadvantage of this method is that the set needs to be defined in the local variable area in order to ensure that the recursive functio

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 the computer to solve the problem of data ind