sudoku y wing

Analysis:DLX is to optimize the data structure of the 01 matrix accurate coverage and repeated coverage from the point of view, it uses the cross-linked list to store only the non-0 of the Matrix, while the 01 matrix is more and more sparse in the DFS process, and every time the recovery is wasted, DLX happens to solve both problems. The key point is to transform the Sudoku problem into a 01 matrix exact overlay. The method of conversion of

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.idea 1: Use a violent Dfspublic class Solution {private Boolean Isvalidsudoku (char[][] board, int row, int column) {int i, j;int[] valid1 = new int [10];int[] Valid2 = new int[1

This article shares the code of the small program for solving the problem of Sudoku. I used Java to write a small program for solving the problem of 9x9 sudoku. I used the exhaustive method to solve the problem. The code is as follows: Package Test; public class SensibleGame {/*** @ param args */int [] [] mainNumber; boolean [] [] flagNumber; public SensibleGame (int [] [] mainNumber) {this. mainNumber = m

1162. Sudoku ConstraintsTime limit:1 secs, Memory limit:32 MB, Special JudgeDescriptionSudoku is a very simple task. A Square Table with 9 rows and 9 columns are divided to 9 smaller squares 3x3 as shown on the figure. In some of the cells is written decimal digits from 1 to 9. The other cells is empty. The goal is to fill the empty cells with a decimal digits from 1 to 9, one digit per cell, and in such. Each column and in each marked a 3x3 subsq

judge whether the rule of Sudoku is met. Sudoku rule: Each row can not have duplicate numbers, each of the 3x3 squares must not have duplicate numbers, but the problem may be empty is '. '. (to develop good programming habits ah, or a little low-level error is not easy to find, wasting life!) ）public class Solution {public boolean Isvalidsudoku (char[][] board) {StringBuilder str = new StringBuilder (""); r

#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.Classsolution (object):defSolvesudoku (self, Board):""": Type BOARD:LIST[LIST[STR]]: rtype:void do not return anything, modify board In-place instead. """ defisValid (x,

Poj (2676) -- Sudoku 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 per cell, in such way that in each row, in each column and in each marked 3x3 subsquare, all the digits from 1 to 9 to appea

Leetcode Note: Sudoku Solver I. Description Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '.'.You may assume that there will be only one unique solution. The following photo is a sudoku puzzle... ... And its solution numbers marked in red: VcD4NCjxwPjxpbWcgYWx0PQ = "here write picture descript

Recently, we are going to develop Sudoku games with small programs, so we have studied the algorithms of the next Sudoku feasibility data. The specific code is as follows:varChess//the state of all chess piecesvarChessstack = [];//Cache Point//Create a chessboardfunctioncreatchess () {Chess= []; for(vari = 0; I ) {Chess[i]= []; for(varj = 0; J ) {Chess[i][j]= {num:0,fixed:false, temp:[1,2,3,4,5,6,7,8,9]};

Recently read some of Python's knowledge, here to record. 1. First is the installation, download the latest version 3.6 on the official website, the installation should pay attention to the following check the add to PATH, the installation will automatically write to the environment variables inside, if not checked, you can reinstall, or configure environment variables, here I will not say much.Install and then command line input python-v appears on the command line indicating successful install

Segment 1Android Mini-game----Sudoku (one)Rule: In 9x9 's chessboard, 9 squares in each row and column contain numbers 1 to 9, not duplicates,Each of the 9 squares surrounded by a black thick solid line contains numbers 1 to 9, which are not duplicated.Since the board is involved, there is no drawing, we know that the work of drawing in Android is done by the UI thread,Generally refers to the main thread, while the Android system set UI drawing thread

The teacher assigned the project needs to compile software, just recently has been playing on the mobile phone sudoku, so you want to spend free time to write a PC on a single-machine version of the Sudoku mini-game, practice their own programming skills. There is no guarantee that every day there is time to spend on this small program, but will try to stick to it, every completion of a little things, will

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.classSolution { Public: voidSolvesudoku (vectorChar>> Board) {Backtracking (board,0); } BOOLBacktracking (vectorChar>> board,intLine ) { //Find first empty cell

Lab Report Course Name Mobile Internet development based on Android platform Date of experiment 2016/4/15 Name of the experimental project Sudoku Game Interface Design Location of the experiment Computer room S3004 Type of experiment -Verification Type √ design type-comprehensive type Hours Two sessions The purpose and requirements of the experiment (t

Sudoku game rules are very simple, only need to fill in the empty Gerian 1~9 numbers, and ensure that each number in each nine Gongne can only appear once, and each number in each row, each column can only appear once, and half of the game process is the system randomly generated a chess, The player then needs to fill in the blanks with the appropriate numbers to match the game's rules.Complete the process: Draw a 9*9 nine Gongge, design a simple and

Problem Link: POJ3435 Sudoku Checker. introductory exercises, written in C language program. Test Instructions Description: Enter N, then enter (NXN) x(NXN) of the two-dimensional array, 0 means can be any value, the writer checks whether the data satisfies the initial state of Sudoku.Problem Analysis: The checks that need to be done are: value range check, row, column, and block values are checked repeatedly.The program writes the function Getblock (

1 classSolution {2 Public:3 voidSolvesudoku (vectorChar>>Board) {4 Sudoku (board);5 }6 Private:7 BOOLSudoku (vectorChar>>Board)8 {9 for(inti =0; I 9; ++i) {Ten for(intj =0; J 9; ++j) { One if(Board[i][j] = ='.') { A for(intK =0; K 9; ++k) { -BOARD[I][J] ='1'+K; - if(IsValid (board, I, J) Sudoku (board))retur

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.DFS, always looking, no way to return:1 classSolution {2 Public:3 voidSolvesudoku (vectorChar>>Board) {4 Dosudoku (board);5 }6 7 BOOLCheckvalid (vectorChar>>board,in

Main topic:Nine problem, also some people called Sudoku problemA grid of 9 rows and 9 columns, subdivided into 9 3*3 sub-grids, requires that only one digit in 1~9 is used in each row, column, and sub-grid, that is, the same number is not allowed in each row, per column, or in each sub-grid.0 is the pending position, and the others are filled in.Required to complete the nine and output (if there are multiple results, you only need to output one of the

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