详见:https://leetcode.com/problems/valid-sudoku/description/ class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { for(int i = 0; i < 9; i ++) { unordered_map<char, bool> m1; //check i_th row unordered_map<ch…

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…

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…

题目要求: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…

题目: 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 (partia…

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 '.'. 解题思路: 传说中的数独(九宫格)问题,老实遍历三个规则即可: JAVA实现: static public boolean isValidSudoku(cha…

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 '.'. 注意这里的有效数独并非指的是可以解出来,只要存在的数满足数独的条件就可以了. 原理很简单,但是判定在同一个blocks的时候出了点问题,没想到判定方法,看了下…

题目链接: https://leetcode.com/problems/valid-sudoku/?tab=Description   给出一个二维数组,数组大小为数独的大小,即9*9  其中,未填入数字的数组值为’.’ 判断当前所给已知数组中所填的数字是否合法.     数独合法性判断: 1. 满足每一行的数字都只能是1~9,并且不能产生重复 2. 满足每一列的数字都只能是1~9,并且不能产生重复 3. 满足每一个3*3的正方形块中的数字只能是1~9,并且不能产生重复     判断过程: 初始…

判断一个 9x9 的数独是否有效.只需要根据以下规则,验证已经填入的数字是否有效即可. 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. 上图是一个部分填充的有效的数独. 数独部分空格内已填入了数字,空白格用 '.' 表示. 示例 1: 输入: [ ["5","3",".",".","7","."…

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…