mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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162 lines
17 KiB
JSON
162 lines
17 KiB
JSON
{
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"questionId": "1972",
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"questionFrontendId": "1861",
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"boundTopicId": null,
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"title": "Rotating the Box",
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"titleSlug": "rotating-the-box",
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"content": "<p>You are given an <code>m x n</code> matrix of characters <code>box</code> representing a side-view of a box. Each cell of the box is one of the following:</p>\r\n\r\n<ul>\r\n\t<li>A stone <code>'#'</code></li>\r\n\t<li>A stationary obstacle <code>'*'</code></li>\r\n\t<li>Empty <code>'.'</code></li>\r\n</ul>\r\n\r\n<p>The box is rotated <strong>90 degrees clockwise</strong>, causing some of the stones to fall due to gravity. Each stone falls down until it lands on an obstacle, another stone, or the bottom of the box. Gravity <strong>does not</strong> affect the obstacles' positions, and the inertia from the box's rotation <strong>does not </strong>affect the stones' horizontal positions.</p>\r\n\r\n<p>It is <strong>guaranteed</strong> that each stone in <code>box</code> rests on an obstacle, another stone, or the bottom of the box.</p>\r\n\r\n<p>Return <em>an </em><code>n x m</code><em> matrix representing the box after the rotation described above</em>.</p>\r\n\r\n<p> </p>\r\n<p><strong>Example 1:</strong></p>\r\n\r\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/08/rotatingtheboxleetcodewithstones.png\" style=\"width: 300px; height: 150px;\" /></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> box = [["#",".","#"]]\r\n<strong>Output:</strong> [["."],\r\n ["#"],\r\n ["#"]]\r\n</pre>\r\n\r\n<p><strong>Example 2:</strong></p>\r\n\r\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/08/rotatingtheboxleetcode2withstones.png\" style=\"width: 375px; height: 195px;\" /></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> box = [["#",".","*","."],\r\n ["#","#","*","."]]\r\n<strong>Output:</strong> [["#","."],\r\n ["#","#"],\r\n ["*","*"],\r\n [".","."]]\r\n</pre>\r\n\r\n<p><strong>Example 3:</strong></p>\r\n\r\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/08/rotatingtheboxleetcode3withstone.png\" style=\"width: 400px; height: 218px;\" /></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> box = [["#","#","*",".","*","."],\r\n ["#","#","#","*",".","."],\r\n ["#","#","#",".","#","."]]\r\n<strong>Output:</strong> [[".","#","#"],\r\n [".","#","#"],\r\n ["#","#","*"],\r\n ["#","*","."],\r\n ["#",".","*"],\r\n ["#",".","."]]\r\n</pre>\r\n\r\n<p> </p>\r\n<p><strong>Constraints:</strong></p>\r\n\r\n<ul>\r\n\t<li><code>m == box.length</code></li>\r\n\t<li><code>n == box[i].length</code></li>\r\n\t<li><code>1 <= m, n <= 500</code></li>\r\n\t<li><code>box[i][j]</code> is either <code>'#'</code>, <code>'*'</code>, or <code>'.'</code>.</li>\r\n</ul>",
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"difficulty": "Medium",
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"likes": 538,
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"exampleTestcases": "[[\"#\",\".\",\"#\"]]\n[[\"#\",\".\",\"*\",\".\"],[\"#\",\"#\",\"*\",\".\"]]\n[[\"#\",\"#\",\"*\",\".\",\"*\",\".\"],[\"#\",\"#\",\"#\",\"*\",\".\",\".\"],[\"#\",\"#\",\"#\",\".\",\"#\",\".\"]]",
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"categoryTitle": "Algorithms",
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"name": "Array",
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"lang": "C++",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n vector<vector<char>> rotateTheBox(vector<vector<char>>& box) {\n \n }\n};",
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"lang": "Java",
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"code": "class Solution {\n public char[][] rotateTheBox(char[][] box) {\n \n }\n}",
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"lang": "Python",
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"langSlug": "python",
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"code": "class Solution(object):\n def rotateTheBox(self, box):\n \"\"\"\n :type box: List[List[str]]\n :rtype: List[List[str]]\n \"\"\"\n ",
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"code": "class Solution:\n def rotateTheBox(self, box: List[List[str]]) -> List[List[str]]:\n ",
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"lang": "C",
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"langSlug": "c",
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"code": "\n\n/**\n * Return an array of arrays of size *returnSize.\n * The sizes of the arrays are returned as *returnColumnSizes array.\n * Note: Both returned array and *columnSizes array must be malloced, assume caller calls free().\n */\nchar** rotateTheBox(char** box, int boxSize, int* boxColSize, int* returnSize, int** returnColumnSizes){\n\n}",
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"lang": "C#",
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"code": "public class Solution {\n public char[][] RotateTheBox(char[][] box) {\n \n }\n}",
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {character[][]} box\n * @return {character[][]}\n */\nvar rotateTheBox = function(box) {\n \n};",
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {Character[][]} box\n# @return {Character[][]}\ndef rotate_the_box(box)\n \nend",
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"lang": "Swift",
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"langSlug": "swift",
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"code": "class Solution {\n func rotateTheBox(_ box: [[Character]]) -> [[Character]] {\n \n }\n}",
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{
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"lang": "Go",
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"langSlug": "golang",
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"code": "func rotateTheBox(box [][]byte) [][]byte {\n \n}",
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\n def rotateTheBox(box: Array[Array[Char]]): Array[Array[Char]] = {\n \n }\n}",
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun rotateTheBox(box: Array<CharArray>): Array<CharArray> {\n \n }\n}",
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"code": "impl Solution {\n pub fn rotate_the_box(box: Vec<Vec<char>>) -> Vec<Vec<char>> {\n \n }\n}",
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"code": "class Solution {\n\n /**\n * @param String[][] $box\n * @return String[][]\n */\n function rotateTheBox($box) {\n \n }\n}",
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"lang": "TypeScript",
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"code": "function rotateTheBox(box: string[][]): string[][] {\n\n};",
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define/contract (rotate-the-box box)\n (-> (listof (listof char?)) (listof (listof char?)))\n\n )",
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"hints": [
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"Rotate the box using the relation rotatedBox[i][j] = box[m - 1 - j][i].",
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"Start iterating from the bottom of the box and for each empty cell check if there is any stone above it with no obstacles between them."
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],
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"sampleTestCase": "[[\"#\",\".\",\"#\"]]",
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"metaData": "{\n \"name\": \"rotateTheBox\",\n \"params\": [\n {\n \"name\": \"box\",\n \"type\": \"character[][]\"\n }\n ],\n \"return\": {\n \"type\": \"character[][]\"\n }\n}",
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"envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code> OpenJDK 17 </code>. 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