mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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174 lines
17 KiB
JSON
174 lines
17 KiB
JSON
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"question": {
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"questionId": "1967",
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"questionFrontendId": "1839",
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"title": "Longest Substring Of All Vowels in Order",
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"titleSlug": "longest-substring-of-all-vowels-in-order",
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"content": "<p>A string is considered <strong>beautiful</strong> if it satisfies the following conditions:</p>\n\n<ul>\n\t<li>Each of the 5 English vowels (<code>'a'</code>, <code>'e'</code>, <code>'i'</code>, <code>'o'</code>, <code>'u'</code>) must appear <strong>at least once</strong> in it.</li>\n\t<li>The letters must be sorted in <strong>alphabetical order</strong> (i.e. all <code>'a'</code>s before <code>'e'</code>s, all <code>'e'</code>s before <code>'i'</code>s, etc.).</li>\n</ul>\n\n<p>For example, strings <code>"aeiou"</code> and <code>"aaaaaaeiiiioou"</code> are considered <strong>beautiful</strong>, but <code>"uaeio"</code>, <code>"aeoiu"</code>, and <code>"aaaeeeooo"</code> are <strong>not beautiful</strong>.</p>\n\n<p>Given a string <code>word</code> consisting of English vowels, return <em>the <strong>length of the longest beautiful substring</strong> of </em><code>word</code><em>. If no such substring exists, return </em><code>0</code>.</p>\n\n<p>A <strong>substring</strong> is a contiguous sequence of characters in a string.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> word = "aeiaaio<u>aaaaeiiiiouuu</u>ooaauuaeiu"\n<strong>Output:</strong> 13\n<b>Explanation:</b> The longest beautiful substring in word is "aaaaeiiiiouuu" of length 13.</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> word = "aeeeiiiioooauuu<u>aeiou</u>"\n<strong>Output:</strong> 5\n<b>Explanation:</b> The longest beautiful substring in word is "aeiou" of length 5.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> word = "a"\n<strong>Output:</strong> 0\n<b>Explanation:</b> There is no beautiful substring, so return 0.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= word.length <= 5 * 10<sup>5</sup></code></li>\n\t<li><code>word</code> consists of characters <code>'a'</code>, <code>'e'</code>, <code>'i'</code>, <code>'o'</code>, and <code>'u'</code>.</li>\n</ul>\n",
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"difficulty": "Medium",
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"likes": 711,
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"exampleTestcases": "\"aeiaaioaaaaeiiiiouuuooaauuaeiu\"\n\"aeeeiiiioooauuuaeiou\"\n\"a\"",
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"categoryTitle": "Algorithms",
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"code": "class Solution(object):\n def longestBeautifulSubstring(self, word):\n \"\"\"\n :type word: str\n :rtype: int\n \"\"\"\n ",
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"code": "object Solution {\n def longestBeautifulSubstring(word: String): Int = {\n \n }\n}",
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"code": "impl Solution {\n pub fn longest_beautiful_substring(word: String) -> i32 {\n \n }\n}",
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"code": "(define/contract (longest-beautiful-substring word)\n (-> string? exact-integer?)\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec longest_beautiful_substring(Word :: unicode:unicode_binary()) -> integer().\nlongest_beautiful_substring(Word) ->\n .",
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"code": "defmodule Solution do\n @spec longest_beautiful_substring(word :: String.t) :: integer\n def longest_beautiful_substring(word) do\n \n end\nend",
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"hints": [
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"Start from each 'a' and find the longest beautiful substring starting at that index.",
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"Based on the current character decide if you should include the next character in the beautiful substring."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "\"aeiaaioaaaaeiiiiouuuooaauuaeiu\"",
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"metaData": "{\n \"name\": \"longestBeautifulSubstring\",\n \"params\": [\n {\n \"name\": \"word\",\n \"type\": \"string\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}",
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Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. 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