leetCode 36. Valid Sudoku(数独) 哈希

36. Valid Sudoku(合法数独)

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 filled) is not necessarily solvable. Only the filled cells need to be validated.

关于数独的简介：

There are just 3 rules to Sudoku.

1.Each row must have the numbers 1-9 occuring just once.

2.Each column must have the numbers 1-9 occuring just once.

3.And the numbers 1-9 must occur just once in each of the 9 sub-boxes of the grid.

题目大意：

判断一个给定的二维数组是否是一个合法的数独矩阵。

思路:

采用set这一容器，来进行去重。

1.判断每一行是否合法。

2.判断每一列是否合法。

3.判断每一个九宫格是否合法。

代码如下：

class Solution {
public:
    bool isValidSudoku(vector>& board) 
    {
    	set mySet;
    	//1.判断每一行是否合法
    	for (int row = 0; row < 9; row++)
    	{
    	    //cout<<"检测行:"< 
  
2016-08-13 12:21:54