{ "data": { "question": { "questionId": "1389", "questionFrontendId": "1263", "categoryTitle": "Algorithms", "boundTopicId": 43352, "title": "Minimum Moves to Move a Box to Their Target Location", "titleSlug": "minimum-moves-to-move-a-box-to-their-target-location", "content": "

A storekeeper is a game in which the player pushes boxes around in a warehouse trying to get them to target locations.

\n\n

The game is represented by an m x n grid of characters grid where each element is a wall, floor, or box.

\n\n

Your task is to move the box 'B' to the target position 'T' under the following rules:

\n\n\n\n

Return the minimum number of pushes to move the box to the target. If there is no way to reach the target, return -1.

\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: grid = [["#","#","#","#","#","#"],\n               ["#","T","#","#","#","#"],\n               ["#",".",".","B",".","#"],\n               ["#",".","#","#",".","#"],\n               ["#",".",".",".","S","#"],\n               ["#","#","#","#","#","#"]]\nOutput: 3\nExplanation: We return only the number of times the box is pushed.
\n\n

Example 2:

\n\n
\nInput: grid = [["#","#","#","#","#","#"],\n               ["#","T","#","#","#","#"],\n               ["#",".",".","B",".","#"],\n               ["#","#","#","#",".","#"],\n               ["#",".",".",".","S","#"],\n               ["#","#","#","#","#","#"]]\nOutput: -1\n
\n\n

Example 3:

\n\n
\nInput: grid = [["#","#","#","#","#","#"],\n               ["#","T",".",".","#","#"],\n               ["#",".","#","B",".","#"],\n               ["#",".",".",".",".","#"],\n               ["#",".",".",".","S","#"],\n               ["#","#","#","#","#","#"]]\nOutput: 5\nExplanation: push the box down, left, left, up and up.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "推箱子", "translatedContent": "

「推箱子」是一款风靡全球的益智小游戏，玩家需要将箱子推到仓库中的目标位置。

\n\n

游戏地图用大小为 m x n 的网格 grid 表示，其中每个元素可以是墙、地板或者是箱子。

\n\n

现在你将作为玩家参与游戏，按规则将箱子 'B' 移动到目标位置 'T' ：

\n\n\n\n

返回将箱子推到目标位置的最小 推动 次数，如果无法做到，请返回 -1。

\n\n

 

\n\n

示例 1：

\n\n

\"\"

\n\n
\n输入：grid = [[\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"],\n             [\"#\",\"T\",\"#\",\"#\",\"#\",\"#\"],\n             [\"#\",\".\",\".\",\"B\",\".\",\"#\"],\n             [\"#\",\".\",\"#\",\"#\",\".\",\"#\"],\n             [\"#\",\".\",\".\",\".\",\"S\",\"#\"],\n             [\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"]]\n输出：3\n解释：我们只需要返回推箱子的次数。
\n\n

示例 2：

\n\n
\n输入：grid = [[\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"],\n             [\"#\",\"T\",\"#\",\"#\",\"#\",\"#\"],\n             [\"#\",\".\",\".\",\"B\",\".\",\"#\"],\n             [\"#\",\"#\",\"#\",\"#\",\".\",\"#\"],\n             [\"#\",\".\",\".\",\".\",\"S\",\"#\"],\n             [\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"]]\n输出：-1\n
\n\n

示例 3：

\n\n
\n输入：grid = [[\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"],\n             [\"#\",\"T\",\".\",\".\",\"#\",\"#\"],\n             [\"#\",\".\",\"#\",\"B\",\".\",\"#\"],\n             [\"#\",\".\",\".\",\".\",\".\",\"#\"],\n             [\"#\",\".\",\".\",\".\",\"S\",\"#\"],\n             [\"#\",\"#\",\"#\",\"#\",\"#\",\"#\"]]\n输出：5\n解释：向下、向左、向左、向上再向上。\n
\n\n

 

\n\n

提示：

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