36. Valid Sudoku(合法数独)
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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
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