Although DLX can improve efficiency .... But for NPC, there is no need to be too efficient, and there is only one point of test.So as long as Dfs fills in, until the spaces are all filled up, be aware of the update and recovery of global variables in DFS.As for the method of storage, just consider the non-repetition of each small block of each row in each column.#include #includeusing namespacestd;intCNT =0;//indicates the number of remaining spaces to fillstructpoint{intx, y;}; Point epts[Bayi+
Recently nothing to do, according to video Tutorial wrote a Sudoku game, very rough there are many places to modify. Let's talk about this game.1. Customize a View control to display a 9*9 grid on the screen, which is actually a horizontal drawing of 8 lines, a vertical drawing of 8 jumpers, and then a few of the lines to be bold. So that's the 9*9 lattice.2. Initialize the numbers on the game interface with a string1 String str_int = "360000000004230
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.
A Sudoku puzzle...
... And its solution numbers marked in red.
This is a simple problem on DFS Method
public class Solution { public void solveSudoku(char[][] board){ List
A few days ago, I saw an interview book with a question about the generation of the sudoku game. So I wanted to implement it myself, read the code of others, and modified some of it myself, the core idea of the code is to use deep priority search. When the searched node meets the condition, search for the next point. Otherwise, the code will be rolled back. Program running diagram:
Public void getSudoku (int [] [] array, LEVEL level) {clear (array);
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.
A Sudoku puzzle...
... And its solution numbers marked in red.
The input of a question is valid. With the backtracking method, we only need to check whether the newly added values are valid in rows, columns, and small squares, and
I. Introduction of the topicIn the large nine lattice of 9x9, there are 9 small nine gongge of 3x3 lattice, and provide a certain number of numbers. Based on these numbers, use logic and reasoning to fill the other blanks with numbers from 1 to 9. Each number can only appear once per Gongne, and each number can appear only once per row or column. This kind of game only needs the logical thinking ability, has nothing to do with the numerical operation. Although the play is simple, but the digital
Title Address: https://leetcode.com/problems/sudoku-solver/Problem Analysis: Use the most stupid method, the line priority traversal need to fill the empty, use 1 to 9 to try, and then determine whether to meet the conditions, if not meet the criteria to try the next number, if the condition is eligible to try to fill the next empty. Implemented using recursive methods.Topic Answer: Public classSolution { Public voidSolvesudoku (Char[] board) {Solvesu
Using System.Collections.Generic;Using Unityeditor;Using Unityengine;public class Testsudo{Class Sudokuitem{public bool Isnormal = FALSE; Fixed numbers do not need to detect expectationspublic int value; The value that the item is stored inPublic list}Static list[MenuItem ("Testsudo/action")]public static void Sudoaction (){Int[][] target = {New int[]{8,0,0,0,0,0,0,0,0},New int[]{0,0,3,6,0,0,0,0,0},New int[]{0,7,0,0,9,0,2,0,0},New int[]{0,5,0,0,0,7,0,0,0},New int[]{0,0,0,0,4,5,7,0,0},New int[]{0
Python-based Sudoku Algorithm Instances and python Algorithm Instances
This example describes how to implement the sudoku Algorithm in python. Share it with you for your reference. The details are as follows:
#-*-Coding: UTF-8-*-''' Created on 2012-10-5 @ author: Administrator ''' from collections import defadicdictimport itertoolsa = [[0, 7, 0, 0, 0, 0, 0, 0], #0 [5, 0, 3, 0, 0, 6, 0, 0], #1 [0, 6, 2, 0, 8
(1)
Constructing Sudoku using backtracking
#include
In Linux, run the command: G ++ file name. cpp. If the program is not incorrect, a file:. Out is automatically generated under this directory. Therefore, execute the following command in this directory:
./A. Out
(2)
The replacement method in the book is simple ......
1.15 construction of sudoku
Determine if a 9x9 sudoku is valid. Just follow the rules below to verify that the numbers you have filled are valid.
1-9the number can appear only once per line.
Numbers 1-9 can appear only once in each column.
The numbers 1-9 3x3 can only appear once in each palace separated by a thick solid line.
is a partially populated, valid Sudoku.Sudoku part of the space has been filled in the number, the blank lattice with the ‘.‘ expres
Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '. You could assume that there would be only one unique solution.
The following algorithm uses the idea of breadth search, in each empty cell, finds all available numbers, fills in an available number, and puts the current Sudoku status into the queue.
The code is as follows:
Class Solution {Publi
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.
Method One: Simple search (Incredibly, I was drunk too)
32ms
Solution {public:struct Point {int x, y;
Point (int _x,int _y): X (_x), Y (_y) {}-point () {}};
Vector
When I test Sudoku on a real machine, I find that when I click the screen quickly, the game occasionally hangs dead, log as follows04-08 15:35:00.838 7317-7356/org.elvalad.sudoku d/openglrenderer:enabling debug mode 004-08 15:35:23.036 7317-7317/ Org.elvalad.sudoku e/inputeventreceiver:exception dispatching input event.04-08 15:35:23.036 7317-7317/ Org.elvalad.sudoku e/messagequeue-jni:exception in MessageQueue callback:handlereceivecallback04-08 15:3
After a few days of work free time to write a Sudoku game on Android, today also applied for several release platform account, released, Google Play to receive 25 knives, and this in the mainland basic access is not, so temporarily did not buy. Writing applications on the mobile platform is fun and feels like a simple application, but it's hard to write interesting apps with elegant code. I've got a new idea lately, and I've always wanted a phone app
Seek Sudoku, only ask to make an answer.Just beginning to understand test instructions wrong, think the answer is unique, so did not do it for a long time, found that the answer is not unique after using backtracking. (or a reference to others)public class Solution {public void Solvesudoku (char[][] board) {hashset[] HashSet = new Hashset[27];for (int i = 0; I Backtracking is still relatively simple, that is, in the implementation of the time, if you
The implementation of this algorithm is to simulate the thinking and computing process of the human brain. If you need it, you can refer to it. 1) when we get a question, we will first follow the conditions we already know, sort and analyze the data.
It is equivalent to writing all "OK items" in the 9th Palace, and marking "Possible options ".
Function refreshStat ()
2) afterwards, the thinking will enter the cycle of speculation/verification.
In cells 9, you can try "Possible options" to verif
Test instructionsGive you a 9*9 matrix that separates the two elements adjacent to the same row with a single space. Where 1-9 represents the already filled number of the position, the question mark (?) indicates the number you want to fill. The solution of this Sudoku is output and there is only one solution for each group.Ideas:Record the vacant place, each vacant place has 9 in the state, DFS + pruning processing other, with scanf input, get () tle
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