mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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175 lines
17 KiB
JSON
175 lines
17 KiB
JSON
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"questionId": "1611",
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"questionFrontendId": "1487",
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"boundTopicId": null,
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"title": "Making File Names Unique",
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"titleSlug": "making-file-names-unique",
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"content": "<p>Given an array of strings <code>names</code> of size <code>n</code>. You will create <code>n</code> folders in your file system <strong>such that</strong>, at the <code>i<sup>th</sup></code> minute, you will create a folder with the name <code>names[i]</code>.</p>\n\n<p>Since two files <strong>cannot</strong> have the same name, if you enter a folder name that was previously used, the system will have a suffix addition to its name in the form of <code>(k)</code>, where, <code>k</code> is the <strong>smallest positive integer</strong> such that the obtained name remains unique.</p>\n\n<p>Return <em>an array of strings of length </em><code>n</code> where <code>ans[i]</code> is the actual name the system will assign to the <code>i<sup>th</sup></code> folder when you create it.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> names = ["pes","fifa","gta","pes(2019)"]\n<strong>Output:</strong> ["pes","fifa","gta","pes(2019)"]\n<strong>Explanation:</strong> Let's see how the file system creates folder names:\n"pes" --> not assigned before, remains "pes"\n"fifa" --> not assigned before, remains "fifa"\n"gta" --> not assigned before, remains "gta"\n"pes(2019)" --> not assigned before, remains "pes(2019)"\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> names = ["gta","gta(1)","gta","avalon"]\n<strong>Output:</strong> ["gta","gta(1)","gta(2)","avalon"]\n<strong>Explanation:</strong> Let's see how the file system creates folder names:\n"gta" --> not assigned before, remains "gta"\n"gta(1)" --> not assigned before, remains "gta(1)"\n"gta" --> the name is reserved, system adds (k), since "gta(1)" is also reserved, systems put k = 2. it becomes "gta(2)"\n"avalon" --> not assigned before, remains "avalon"\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> names = ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece"]\n<strong>Output:</strong> ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece(4)"]\n<strong>Explanation:</strong> When the last folder is created, the smallest positive valid k is 4, and it becomes "onepiece(4)".\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= names.length <= 5 * 10<sup>4</sup></code></li>\n\t<li><code>1 <= names[i].length <= 20</code></li>\n\t<li><code>names[i]</code> consists of lowercase English letters, digits, and/or round brackets.</li>\n</ul>\n",
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"difficulty": "Medium",
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"likes": 422,
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"exampleTestcases": "[\"pes\",\"fifa\",\"gta\",\"pes(2019)\"]\n[\"gta\",\"gta(1)\",\"gta\",\"avalon\"]\n[\"onepiece\",\"onepiece(1)\",\"onepiece(2)\",\"onepiece(3)\",\"onepiece\"]",
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"categoryTitle": "Algorithms",
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"name": "Hash Table",
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"code": "class Solution {\npublic:\n vector<string> getFolderNames(vector<string>& names) {\n \n }\n};",
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"code": "class Solution(object):\n def getFolderNames(self, names):\n \"\"\"\n :type names: List[str]\n :rtype: List[str]\n \"\"\"\n ",
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"lang": "Kotlin",
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"code": "# @param {String[]} names\n# @return {String[]}\ndef get_folder_names(names)\n \nend",
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"code": "impl Solution {\n pub fn get_folder_names(names: Vec<String>) -> Vec<String> {\n \n }\n}",
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"code": "(define/contract (get-folder-names names)\n (-> (listof string?) (listof string?))\n )",
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"code": "defmodule Solution do\n @spec get_folder_names(names :: [String.t]) :: [String.t]\n def get_folder_names(names) do\n \n end\nend",
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"hints": [
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"Keep a map of each name and the smallest valid integer that can be appended as a suffix to it.",
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"If the name is not present in the map, you can use it without adding any suffixes.",
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"If the name is present in the map, append the smallest proper suffix, and add the new name to the map."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[\"pes\",\"fifa\",\"gta\",\"pes(2019)\"]",
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"metaData": "{\n \"name\": \"getFolderNames\",\n \"params\": [\n {\n \"name\": \"names\",\n \"type\": \"string[]\"\n }\n ],\n \"return\": {\n \"type\": \"string[]\"\n }\n}",
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