目录 # 前端与算法 leetcode 36. 有效的数独 题目描述 概要 提示 解析 算法 传入[['5', '3', '.', '.', '7', '.', '.', '.', '.'],['6', '.', '.', '1', '9', '5', '.', '.', '.'],['.', '9', '8', '.', '.', '.', '.', '6', '.'],['8', '.', '.', '.', '6', '.', '.', '.', '3'],['4', '.', '.',…

36. 有效的数独 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. 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/valid-sudoku 著作权归领扣网络所有.商业转载请…

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…

没啥好说的,直接上就行 36. 有效的数独 class Solution { public boolean isValidSudoku(char[][] board) { Map<Character, Integer> map = new HashMap<>(); for (int i = 0; i < 9; i++) { map.clear(); for (int j = 0; j < 9; j++) { if (board[i][j] != '.') { if (m…

1. 题目 2. 解答 将数独中数字的 ASCII 码值转化到 0-8 之间作为散列值,建立一个散列表,然后分别逐行.逐列.逐宫(3*3小块)统计每个数字的出现次数,若出现次数大于 1,则数独无效. class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { int table[9] = {0}; int i = 0, j = 0; int index = 0; // 逐行扫描,判断数…

题目描述 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",".&…

建立一个哈希表,每次查找,如果对应的列col,行row,小方格box中的数出现第二次,那么数独不合法: 据说还有深度优先搜索的方法,表示没有听懂:) class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { || board[].size()!=) return false; ][]; ][]; ][]; ;i<;i++){ fill(row[i],row[i]+,false)…

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…

题目描述 36. 有效的数独 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",…

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…

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: 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…

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 1-9 without repetition. Each column must contain the digits 1-9 without repetition. Each of the 9 …

@author: ZZQ @software: PyCharm @file: leetcode36_isValidSudoku.py @time: 2018/11/19 19:27 要求: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. 思路: 纯暴力解决. class Solution(): def __init__…

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 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. 思路 最简单首先比较每一行,比较每一列,再比较每一个方块,实现方法比较简单,但效率很低. 由于二维数组在列和方块的取值都设置循环操作,因此可以在一个循环中将值取出,放入不同的容器等待判定. 因此可以分别创建行,列,方块的3个二维数组,从头到尾读取数独中的数据,将其分别…

题目链接 [题解] 就一傻逼模拟题 [代码] class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { bool bo[10]; for (int i = 0;i < 9;i++){ memset(bo,0,sizeof(bo)); for (int j = 0;j < 9;j++){ if (board[i][j]!='.'){ if (bo[board[i][j]-'…

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 (partially…

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…

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 partially filled sudoku which is valid. Note:A valid Sudoku…

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…

https://leetcode.com/problems/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…

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'.'. A partially filled sudoku which is valid. 题意:判断矩阵是否是一个数独矩阵.所谓的数独矩阵就是9*9的矩阵,每一行一个…

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…

题目 Determine if a 9 x 9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules: 1.Each row must contain the digits 1-9 without repetition. 2.Each column must contain the digits 1-9 without repetition. 3.Eac…

题目描述: 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 partially filled sudoku which is valid. Note: A valid Sudoku board (par…

题目: Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -- Get the top element. empty() -- Return whether the stack is empty. Notes: You must use on…

import numpy as npimport syssys.setrecursionlimit(1000) #例如这里设置为一百万 def get1(n):    if n<3:        return 0    if n<6:        return 3    return 6 def get2(n):    if n<3:        return 3    if n<6:        return 6    return 9 def get3(arr,i,j)…

题目: 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 1-9 without repetition. Each column must contain the digits 1-9 without repetition. Each of th…