[Leetcode with python] 36. Valid Sudoku (# Hash table)

題目 https://leetcode.com/problems/valid-sudoku/ 解題 遍歷三次矩陣，三個規則都檢驗一次。 class Solution(object): def isValidSudoku(self, board): """ :type board: List[List[str]] :rtype: bool """ for ro

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