我没有看到这个问题,这使其在现货需求数独,害怕一直没敢做.后来我发现原来的标题就是这么简单.推断现在只有数字全不符合的就可以了棋盘上的形势的要求. 是不是正确的三个周期..人是不能满意地看到每一行.每列装不满意,每个小3*3的格男人不能满足孩子.每个小3*3格子我是用求得左上角的方法来验证的. 事实上认为数独难另一个原因是记得他在编程之美上出现过.. 那上面讨论的主要是如何构造一个数独.详细记不太清楚了,印象最深的是,要想保证有解,最好的办法是先用置换法生成一个解,然后去掉这个解中的一些位置.…

指数:[LeetCode] Leetcode 解决问题的指数 (C++/Java/Python/Sql) Github: https://github.com/illuz/leetcode 036. Valid Sudoku (Easy) 链接: 题目:https://leetcode.com/problems/valid-sudoku/ 代码(github):https://github.com/illuz/leetcode 题意: 推断一个数独是否有效. 有效的数独不强求有解. 分析: 仅仅…

LeetCode:36. Valid Sudoku,数独是否有效 : 题目: LeetCode:36. Valid Sudoku 描述: 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 partiall…

中间被启程日本的面试弄的没有静下心来复习算法.这样不好,基本功是硬道理.逐步恢复刷题. 题目:给一个数独(九宫格)中的一些数字,判断该数独是否有效. 即按照数独的规则,判断其行.列.小九格中是否有重复的数字.如有,即判断无效. 直接给代码吧,长期没刷题,代码质量有所下降. public boolean isValidSudoku(char[][] board) { int[] help = new int[10]; //横排检测 for(int i = 0 ; i < 9 ; i++){ for…

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…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 37: Sudoku Solverhttps://oj.leetcode.com/problems/sudoku-solver/ Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '.'.You may a…

Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules: Each row must contain the digits 1-9without repetition. Each column must contain the digits 1-9 without repetition. Each of the 9 3…

Problem: 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 board (p…

题目简述: 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 board (par…

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…