{ "data": { "question": { "questionId": "529", "questionFrontendId": "529", "categoryTitle": "Algorithms", "boundTopicId": 1896, "title": "Minesweeper", "titleSlug": "minesweeper", "content": "

Let's play the minesweeper game (Wikipedia, online game)!

\n\n

You are given an m x n char matrix board representing the game board where:

\n\n\n\n

You are also given an integer array click where click = [clickr, clickc] represents the next click position among all the unrevealed squares ('M' or 'E').

\n\n

Return the board after revealing this position according to the following rules:

\n\n
    \n\t
  1. If a mine 'M' is revealed, then the game is over. You should change it to 'X'.
    2. \n\t
  2. If an empty square 'E' with no adjacent mines is revealed, then change it to a revealed blank 'B' and all of its adjacent unrevealed squares should be revealed recursively.
    3. \n\t
  3. If an empty square 'E' with at least one adjacent mine is revealed, then change it to a digit ('1' to '8') representing the number of adjacent mines.
    4. \n\t
  4. Return the board when no more squares will be revealed.
    5. \n
\n\n

 

\n

Example 1:

\n\n
\nInput: board = [["E","E","E","E","E"],["E","E","M","E","E"],["E","E","E","E","E"],["E","E","E","E","E"]], click = [3,0]\nOutput: [["B","1","E","1","B"],["B","1","M","1","B"],["B","1","1","1","B"],["B","B","B","B","B"]]\n
\n\n

Example 2:

\n\n
\nInput: board = [["B","1","E","1","B"],["B","1","M","1","B"],["B","1","1","1","B"],["B","B","B","B","B"]], click = [1,2]\nOutput: [["B","1","E","1","B"],["B","1","X","1","B"],["B","1","1","1","B"],["B","B","B","B","B"]]\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "扫雷游戏", "translatedContent": "

让我们一起来玩扫雷游戏！

\n\n

给你一个大小为 m x n 二维字符矩阵 board ，表示扫雷游戏的盘面，其中：

\n\n\n\n

给你一个整数数组 click ，其中 click = [clickr, clickc] 表示在所有 未挖出的 方块（'M' 或者 'E'）中的下一个点击位置（clickr 是行下标，clickc 是列下标）。

\n\n

根据以下规则，返回相应位置被点击后对应的盘面：

\n\n
    \n\t
  1. 如果一个地雷（'M'）被挖出，游戏就结束了- 把它改为 'X' 。
    2. \n\t
  2. 如果一个 没有相邻地雷 的空方块（'E'）被挖出，修改它为（'B'），并且所有和其相邻的 未挖出 方块都应该被递归地揭露。
    3. \n\t
  3. 如果一个 至少与一个地雷相邻 的空方块（'E'）被挖出，修改它为数字（'1' 到 '8' ），表示相邻地雷的数量。
    4. \n\t
  4. 如果在此次点击中，若无更多方块可被揭露，则返回盘面。
    5. \n
\n\n

 

\n\n

示例 1：

\n\n
\n输入：board = [[\"E\",\"E\",\"E\",\"E\",\"E\"],[\"E\",\"E\",\"M\",\"E\",\"E\"],[\"E\",\"E\",\"E\",\"E\",\"E\"],[\"E\",\"E\",\"E\",\"E\",\"E\"]], click = [3,0]\n输出：[[\"B\",\"1\",\"E\",\"1\",\"B\"],[\"B\",\"1\",\"M\",\"1\",\"B\"],[\"B\",\"1\",\"1\",\"1\",\"B\"],[\"B\",\"B\",\"B\",\"B\",\"B\"]]\n
\n\n

示例 2：

\n\n
\n输入：board = [[\"B\",\"1\",\"E\",\"1\",\"B\"],[\"B\",\"1\",\"M\",\"1\",\"B\"],[\"B\",\"1\",\"1\",\"1\",\"B\"],[\"B\",\"B\",\"B\",\"B\",\"B\"]], click = [1,2]\n输出：[[\"B\",\"1\",\"E\",\"1\",\"B\"],[\"B\",\"1\",\"X\",\"1\",\"B\"],[\"B\",\"1\",\"1\",\"1\",\"B\"],[\"B\",\"B\",\"B\",\"B\",\"B\"]]\n
\n\n

 

\n\n

提示：

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