{ "data": { "question": { "questionId": "810", "questionFrontendId": "794", "categoryTitle": "Algorithms", "boundTopicId": 1669, "title": "Valid Tic-Tac-Toe State", "titleSlug": "valid-tic-tac-toe-state", "content": "

Given a Tic-Tac-Toe board as a string array board, return true if and only if it is possible to reach this board position during the course of a valid tic-tac-toe game.

\n\n

The board is a 3 x 3 array that consists of characters ' ', 'X', and 'O'. The ' ' character represents an empty square.

\n\n

Here are the rules of Tic-Tac-Toe:

\n\n\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: board = ["O  ","   ","   "]\nOutput: false\nExplanation: The first player always plays "X".\n
\n\n

Example 2:

\n\"\"\n
\nInput: board = ["XOX"," X ","   "]\nOutput: false\nExplanation: Players take turns making moves.\n
\n\n

Example 3:

\n\"\"\n
\nInput: board = ["XOX","O O","XOX"]\nOutput: true\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "有效的井字游戏", "translatedContent": "

给你一个字符串数组 board 表示井字游戏的棋盘。当且仅当在井字游戏过程中，棋盘有可能达到 board 所显示的状态时，才返回 true 。

\n\n

井字游戏的棋盘是一个 3 x 3 数组，由字符 ' '，'X' 和 'O' 组成。字符 ' ' 代表一个空位。

\n\n

以下是井字游戏的规则：

\n\n\n\n

 

\n\n

示例 1：

\n\"\"\n
\n输入：board = [\"O  \",\"   \",\"   \"]\n输出：false\n解释：玩家 1 总是放字符 \"X\" 。\n
\n\n

示例 2：

\n\"\"\n
\n输入：board = [\"XOX\",\" X \",\"   \"]\n输出：false\n解释：玩家应该轮流放字符。\n
\n\n

示例 3:

\n\"\"\n
\n输入：board = [\"XOX\",\"O O\",\"XOX\"]\n输出：true\n
\n\n

 

\n\n

提示：

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