mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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186 lines
17 KiB
JSON
186 lines
17 KiB
JSON
{
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"question": {
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"questionId": "1350",
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"questionFrontendId": "1233",
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"boundTopicId": null,
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"title": "Remove Sub-Folders from the Filesystem",
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"titleSlug": "remove-sub-folders-from-the-filesystem",
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"content": "<p>Given a list of folders <code>folder</code>, return <em>the folders after removing all <strong>sub-folders</strong> in those folders</em>. You may return the answer in <strong>any order</strong>.</p>\n\n<p>If a <code>folder[i]</code> is located within another <code>folder[j]</code>, it is called a <strong>sub-folder</strong> of it.</p>\n\n<p>The format of a path is one or more concatenated strings of the form: <code>'/'</code> followed by one or more lowercase English letters.</p>\n\n<ul>\n\t<li>For example, <code>"/leetcode"</code> and <code>"/leetcode/problems"</code> are valid paths while an empty string and <code>"/"</code> are not.</li>\n</ul>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> folder = ["/a","/a/b","/c/d","/c/d/e","/c/f"]\n<strong>Output:</strong> ["/a","/c/d","/c/f"]\n<strong>Explanation:</strong> Folders "/a/b" is a subfolder of "/a" and "/c/d/e" is inside of folder "/c/d" in our filesystem.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> folder = ["/a","/a/b/c","/a/b/d"]\n<strong>Output:</strong> ["/a"]\n<strong>Explanation:</strong> Folders "/a/b/c" and "/a/b/d" will be removed because they are subfolders of "/a".\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> folder = ["/a/b/c","/a/b/ca","/a/b/d"]\n<strong>Output:</strong> ["/a/b/c","/a/b/ca","/a/b/d"]\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= folder.length <= 4 * 10<sup>4</sup></code></li>\n\t<li><code>2 <= folder[i].length <= 100</code></li>\n\t<li><code>folder[i]</code> contains only lowercase letters and <code>'/'</code>.</li>\n\t<li><code>folder[i]</code> always starts with the character <code>'/'</code>.</li>\n\t<li>Each folder name is <strong>unique</strong>.</li>\n</ul>\n",
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"translatedTitle": null,
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"difficulty": "Medium",
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"likes": 773,
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"exampleTestcases": "[\"/a\",\"/a/b\",\"/c/d\",\"/c/d/e\",\"/c/f\"]\n[\"/a\",\"/a/b/c\",\"/a/b/d\"]\n[\"/a/b/c\",\"/a/b/ca\",\"/a/b/d\"]",
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"categoryTitle": "Algorithms",
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"name": "Array",
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"slug": "array",
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"name": "String",
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"name": "Depth-First Search",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n vector<string> removeSubfolders(vector<string>& folder) {\n \n }\n};",
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"code": "class Solution {\n public List<String> removeSubfolders(String[] folder) {\n \n }\n}",
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"code": "class Solution(object):\n def removeSubfolders(self, folder):\n \"\"\"\n :type folder: List[str]\n :rtype: List[str]\n \"\"\"\n ",
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"code": "/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nchar** removeSubfolders(char** folder, int folderSize, int* returnSize) {\n \n}",
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun removeSubfolders(folder: Array<String>): List<String> {\n \n }\n}",
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"lang": "Dart",
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"code": "class Solution {\n List<String> removeSubfolders(List<String> folder) {\n \n }\n}",
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"lang": "Go",
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"langSlug": "golang",
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"code": "func removeSubfolders(folder []string) []string {\n \n}",
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {String[]} folder\n# @return {String[]}\ndef remove_subfolders(folder)\n \nend",
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\n def removeSubfolders(folder: Array[String]): List[String] = {\n \n }\n}",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn remove_subfolders(folder: Vec<String>) -> Vec<String> {\n \n }\n}",
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define/contract (remove-subfolders folder)\n (-> (listof string?) (listof string?))\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec remove_subfolders(Folder :: [unicode:unicode_binary()]) -> [unicode:unicode_binary()].\nremove_subfolders(Folder) ->\n .",
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"code": "defmodule Solution do\n @spec remove_subfolders(folder :: [String.t]) :: [String.t]\n def remove_subfolders(folder) do\n \n end\nend",
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"hints": [
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"Sort the folders lexicographically.",
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"Insert the current element in an array and then loop until we get rid of all of their subfolders, repeat this until no element is left."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[\"/a\",\"/a/b\",\"/c/d\",\"/c/d/e\",\"/c/f\"]",
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"metaData": "{\n \"name\": \"removeSubfolders\",\n \"params\": [\n {\n \"name\": \"folder\",\n \"type\": \"string[]\"\n }\n ],\n \"return\": {\n \"type\": \"list<string>\"\n }\n}",
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