{ "data": { "question": { "questionId": "1000567", "questionFrontendId": "LCP 79", "categoryTitle": "Algorithms", "boundTopicId": 2258740, "title": "提取咒文", "titleSlug": "kjpLFZ", "content": "", "translatedTitle": "提取咒文", "translatedContent": "随着兽群逐渐远去，一座大升降机缓缓的从地下升到了远征队面前。借由这台升降机，他们将能够到达地底的永恒至森。\n在升降机的操作台上，是一个由魔法符号组成的矩阵，为了便于辨识，我们用小写字母来表示。 `matrix[i][j]` 表示矩阵第 `i` 行 `j` 列的字母。该矩阵上有一个提取装置，可以对所在位置的字母提取。\n提取装置初始位于矩阵的左上角 `[0,0]`，可以通过每次操作移动到上、下、左、右相邻的 1 格位置中。提取装置每次移动或每次提取均记为一次操作。\n\n远征队需要按照顺序，从矩阵中逐一取出字母以组成 `mantra`，才能够成功的启动升降机。请返回他们 **最少** 需要消耗的操作次数。如果无法完成提取，返回 `-1`。\n\n**注意：**\n- 提取装置可对同一位置的字母重复提取，每次提取一个\n- 提取字母时，需按词语顺序依次提取\n\n**示例 1：**\n>输入：`matrix = [\"sd\",\"ep\"], mantra = \"speed\"`\n>\n>输出：`10`\n>\n>解释：如下图所示\n![矩阵 (2).gif](https://pic.leetcode-cn.com/1646288670-OTlvAl-%E7%9F%A9%E9%98%B5%20\\(2\\).gif)\n\n**示例 2：**\n>输入：`matrix = [\"abc\",\"daf\",\"geg\"]， mantra = \"sad\"`\n>\n>输出：`-1`\n>\n>解释：矩阵中不存在 `s` ，无法提取词语\n\n**提示：**\n- `0 < matrix.length, matrix[i].length <= 100`\n- `0 < mantra.length <= 100`\n- `matrix 和 mantra` 仅由小写字母组成", "isPaidOnly": false, "difficulty": "Medium", "likes": 4, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [ { "username": "UBTZEJGEPp", "profileUrl": "/u/UBTZEJGEPp", "avatarUrl": "https://assets.leetcode.cn/aliyun-lc-upload/default_avatar.png", "__typename": "ContributorNode" } ], "langToValidPlayground": "{\"cpp\": false, \"java\": true, \"python\": true, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"ruby\": false, \"bash\": false, \"swift\": false, \"golang\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"kotlin\": false, \"rust\": false, \"php\": false, \"typescript\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"dart\": false}", "topicTags": [], "companyTagStats": null, "codeSnippets": [ { "lang": "C++", "langSlug": "cpp", "code": "class Solution {\npublic:\n int extractMantra(vector& matrix, string mantra) {\n\n }\n};", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "class Solution {\n public int extractMantra(String[] matrix, String mantra) {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class Solution(object):\n def extractMantra(self, matrix, mantra):\n \"\"\"\n :type matrix: List[str]\n :type mantra: str\n :rtype: int\n \"\"\"", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class Solution:\n def extractMantra(self, matrix: List[str], mantra: str) -> int:", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "int extractMantra(char** matrix, int matrixSize, char* mantra){\n\n}", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class Solution {\n public int ExtractMantra(string[] matrix, string mantra) {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * @param {string[]} matrix\n * @param {string} mantra\n * @return {number}\n */\nvar extractMantra = function(matrix, mantra) {\n\n};", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "# @param {String[]} matrix\n# @param {String} mantra\n# @return {Integer}\ndef extract_mantra(matrix, mantra)\n\nend", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "class Solution {\n func extractMantra(_ matrix: [String], _ mantra: String) -> Int {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "func extractMantra(matrix []string, mantra string) int {\n\n}", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "object Solution {\n def extractMantra(matrix: Array[String], mantra: String): Int = {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class Solution {\n fun extractMantra(matrix: Array, mantra: String): Int {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "impl Solution {\n pub fn extract_mantra(matrix: Vec, mantra: String) -> i32 {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class Solution {\n\n /**\n * @param String[] $matrix\n * @param String $mantra\n * @return Integer\n */\n function extractMantra($matrix, $mantra) {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "function extractMantra(matrix: string[], mantra: string): number {\n\n};", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define/contract (extract-mantra matrix mantra)\n (-> (listof string?) string? 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