LeetCode 36 有效的數獨

判斷乙個9x9的數獨是否有效。只需要根據以下規則，驗證已經填入的數字是否有效即可。

數字1-9在每一行只能出現一次。

數字1-9在每一列只能出現一次。

數字1-9在每乙個以粗實線分隔的3x3宮內只能出現一次。

上圖是乙個部分填充的有效的數獨。

數獨部分空格內已填入了數字，空白格用'.'表示。

示例1：

輸入:

[  ["5","3",".",".","7",".",".",".","."],
["6",".",".","1","9","5",".",".","."],
[".","9","8",".",".",".",".","6","."],
["8",".",".",".","6",".",".",".","3"],
["4",".",".","8",".","3",".",".","1"],
["7",".",".",".","2",".",".",".","6"],
[".","6",".",".",".",".","2","8","."],
[".",".",".","4","1","9",".",".","5"],
[".",".",".",".","8",".",".","7","9"]
]輸出: true

輸入:

[  ["8","3",".",".","7",".",".",".","."],
["6",".",".","1","9","5",".",".","."],
[".","9","8",".",".",".",".","6","."],
["8",".",".",".","6",".",".",".","3"],
["4",".",".","8",".","3",".",".","1"],
["7",".",".",".","2",".",".",".","6"],
[".","6",".",".",".",".","2","8","."],
[".",".",".","4","1","9",".",".","5"],
[".",".",".",".","8",".",".","7","9"]
]輸出: false
解釋: 除了第一行的第乙個數字從 5 改為 8 以外，空格內其他數字均與 示例1 相同。
但由於位於左上角的 3x3 宮內有兩個 8 存在, 因此這個數獨是無效的。

class solution 

if(board[i][j] != '.') }}
return true;
}public:
bool isvalidsudoku(vector>& board) }}
}}return check(board);}};

LeetCode 36 有效的數獨

題目鏈結 題目描述 判斷乙個 9x9 的數獨是否有效。只需要根據以下規則，驗證已經填入的數字是否有效即可。數字 1 9 在每一行只能出現一次。數字 1 9 在每一列只能出現一次。數字 1 9 在每乙個以粗實線分隔的 3x3 宮內只能出現一次。上圖是乙個部分填充的有效的數獨。數獨部分空格內已填入了數字...

LeetCode 36 有效的數獨

public boolean isvalidsudoku char board 檢查行 if isparticallyvalid board,i,i,0,8 檢查塊 for int i 0 i 3 i return true 把要檢查的值存入到set中，每次向set中新增值的時候，如果失敗則證明該值...

leetcode36 有效的數獨

判斷乙個 9x9 的數獨是否有效。只需要根據以下規則，驗證已經填入的數字是否有效即可。數字 1 9 在每一行只能出現一次。數字 1 9 在每一列只能出現一次。數字 1 9 在每乙個以粗實線分隔的 3x3 宮內只能出現一次。數獨部分空格內已填入了數字，空白格用 表示。示例 1 輸入 5 3 7 6 1...