题目链接 题目要求: 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…

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 (partial…

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…

#-*- coding: UTF-8 -*-#特定的九个格内1-9的个数至多为1#依次检查每行,每列,每个子九宫格是否出现重复元素,如果出现返回false,否则返回true.class Solution(object):    def isValidSudoku(self, board):        """        :type board: List[List[str]]        :rtype: bool        """  …

1. Two Sum 题目链接 题目要求: Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than ind…

题目链接 题目要求: Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of c…

 1. Contains Duplicate 题目链接 题目要求: Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. 代码如下:…

题目链接 题目要求: Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 这道题属于比较简单的,程序如下: class Solution…

思路题目里已经给出来了,判断是否是一个有效数独,只需满足以下三个条件: 1.同行元素不重复且1-9都有: 2.同列元素不重复且1-9都有: 3.每个粗线分隔的3*3的小九宫格元素不重复且1-9都有. 参考了大神的解法: class Solution { public: bool isValidSudoku(vector<vector<char>>& board) { ][] = {}, col[][] = {}, sub[][] = {}; ; i < board.s…

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…