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. Hide Tags B…

Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Each of the digits 1-9 must occur exactly once in each row. Each of the digits 1-9 must occur exactly once in each column.…

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. 这道求解数独的题是在之…

写一个程序通过填充空格来解决数独.空格用 '.' 表示. 详见:https://leetcode.com/problems/sudoku-solver/description/ class Solution { public: bool solveSudoku(vector<vector<char> > &board) { for (int i = 0; i < 9; ++i) for (int j = 0; j < 9; ++j) { if ('.' == b…

Valid Sudoku Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A partially filled sudoku which is valid. Note: A valid Sudoku boa…

问题描述:填充数独表中空元素.空元素为'.' 算法分析:没填充一个数,都要看这个数所在的行,列,小矩阵是否合法.然后还要看整个数独表是否正确,而判断整个数独表只能通过递归,因为前一个结果的判断要依赖后一个结果.这应该属于动态规划问题.要递归回溯. public void solveSudoku(char[][] board) { solve(board); } public boolean solve(char[][] board) { for(int i = 0; i < 9; i ++) {…

Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Each of the digits 1-9 must occur exactly once in each row. Each of the digits 1-9 must occur exactly once in each column.…

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. dfs,一直寻找,不行…

July 19, 2015 Problem statement: 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. Solution 1:  Great blog to read: http://…

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. 方法:解此问题的关键是…

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. class Solut…

1.题目描述 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.   2.解法分析 class Solution{public: bool isValid(vector<vector<char&g…

#the define of Sudoku is on this link : http://sudoku.com.au/TheRules.aspx 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…

题目链接 [题解] 回溯法搞一下. 用set和数组下标判重. [代码] class Solution { public: set<int> myset[9]; int hang[9][10],lie[9][10]; bool dfs(vector<vector<char>>& board,int x,int y){ if (y==9){ x++;y = 0; } if (x==9){ return true; } if (board[x][y]!='.'){ r…

问题来源:leetCode Sudoku Solver Write a program to solve aSudoku puzzle by filling the empty cells. Empty cells are indicated by the character *.*. You may assume that there will be only one unique solution. 问题链接: https://oj.leetcode.com/problems/sudoku-…

Leetcode之回溯法专题-37. 解数独(Sudoku Solver) 编写一个程序,通过已填充的空格来解决数独问题. 一个数独的解法需遵循如下规则: 数字 1-9 在每一行只能出现一次.数字 1-9 在每一列只能出现一次.数字 1-9 在每一个以粗实线分隔的 3x3 宫内只能出现一次.空白格用 '.' 表示. 解法: 分析: 给定一个9*9的char型的二维数组,数组里已经填好了一些数字,要求生成一个数独. 本题可以用回溯法,在空的格子里填下1-9数字,全部填完后,判断是否为数独,是->保…

37. 解数独 1A 这个题其实15分钟左右就敲出来并且对了...但是由于我输错了一个数..导致我白白debug一个多小时.. 没啥难度,练递归-dfs的好题 class Solution { private int which(int i, int j) { if (i <= 2) { if (j <= 2) return 1; if (j <= 5) return 2; return 3; } if (i <= 5) { if (j <= 2) return 4; if…

三星机试也考了类似的题目,只不过是要针对给出的数独修改其中三个错误数字,总过10个测试用例只过了3个与世界500强无缘了 36. Valid Sudoku Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A…

题目链接:Sudoku Solver | LeetCode OJ 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 n…

最近,新加坡总理李显龙也写了一份代码公布出来,大致瞧了一眼,竟然是解数独题的代码!前几天刚刚写过,数独主要算法当然是使用回溯法.回溯法当时初学的时候在思路上比较拧,不容易写对.写了几个回溯法的算法之后心里总算有了点底.回溯法的代码一般都是长成下面这样子: void backtracking(int[] arr, int boundary, int current, int[] result) { if(current>=boundary) //到达终止条件 { //判断result是否符合要求…

Sudoku Solver 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 re…

题目要求:Sudoku Solver 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…

Sudoku Solver 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 re…

呜呜呜 递归好不想写qwq 求“所有情况”这种就递归 17. Letter Combinations of a Phone Number 题意:在九宫格上按数字,输出所有可能的字母组合 Input: " Output: ["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf&qu…

数独 程序地址https://github.com/papicheng/blog/tree/master/%E6%95%B0%E7%8B%AC 一.游戏规则介绍: 数独是源自18世纪瑞士的一种数学游戏.是一种运用纸.笔进行演算的逻辑游戏.玩家需要根据9×9盘面上的已知数字,推理出所有剩余空格的数字,并满足每一行.每一列.每一个粗线宫(3*3)内的数字均含1-9,不重复. ​ 程序介绍: 数独生成程序(sudokuGenerate.cpp) 生成数独的算法思想:回溯法,递归实现深度优先搜索 函数简…

本文始发于个人公众号:TechFlow,原创不易,求个关注 数独是一个老少咸宜的益智游戏,一直有很多拥趸.但是有没有想过,数独游戏是怎么创造出来的呢?当然我们可以每一关都人工设置,但是显然这工作量非常大,满足不了数独爱好者的需求. 所以常见的一种形式是,我们只会选择难度,不同的难度对应不同的留空的数量.最后由程序根据我们选择的难度替我们生成一个数独问题.但是熟悉数独的朋友都知道,并不是所有的数独都是可解的,如果设置的不好可能会出现数独无法解开的情况.所以程序在生成完数独之后,往往还需要进行可行性…

37. 解数独 编写一个程序,通过已填充的空格来解决数独问题. 一个数独的解法需遵循如下规则: 数字 1-9 在每一行只能出现一次. 数字 1-9 在每一列只能出现一次. 数字 1-9 在每一个以粗实线分隔的 3x3 宫内只能出现一次. 空白格用 '.' 表示. 一个数独. 答案被标成红色. Note: 给定的数独序列只包含数字 1-9 和字符 '.' . 你可以假设给定的数独只有唯一解. 给定数独永远是 9x9 形式的. 来源:力扣(LeetCode) 链接:https://leetcode-…

1. Reverse Nodes in k-Group Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. k is a positive integer and is less than or equal to the length of the linked list. If the number of nodes is not a multiple…

leetcode 36 感觉就是遍历. 保存好状态,就是各行各列还有各分区divide的情况 用数组做. 空间小时间大 class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { int row[9][9]={0},col[9][9]={0},div[9][9]={0}; int temp=0,dnum; for(int i=0;i<9;i++){ for(int j=0;j&l…

我是一个C++初学者,控制台实现了一个解数独的小程序. 代码如下: //"数独游戏"V1.0 //李国良于2016年11月11日编写完成 #include <iostream> #include <fstream> #include <string> #include <Windows.h> using namespace std; const int ArSize = 9; string loadFile(int arr[ArSize]…