mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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193 lines
22 KiB
JSON
193 lines
22 KiB
JSON
{
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"question": {
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"questionId": "2603",
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"questionFrontendId": "2512",
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"boundTopicId": null,
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"title": "Reward Top K Students",
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"titleSlug": "reward-top-k-students",
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"content": "<p>You are given two string arrays <code>positive_feedback</code> and <code>negative_feedback</code>, containing the words denoting positive and negative feedback, respectively. Note that <strong>no</strong> word is both positive and negative.</p>\n\n<p>Initially every student has <code>0</code> points. Each positive word in a feedback report <strong>increases</strong> the points of a student by <code>3</code>, whereas each negative word <strong>decreases</strong> the points by <code>1</code>.</p>\n\n<p>You are given <code>n</code> feedback reports, represented by a <strong>0-indexed</strong> string array <code>report</code> and a <strong>0-indexed</strong> integer array <code>student_id</code>, where <code>student_id[i]</code> represents the ID of the student who has received the feedback report <code>report[i]</code>. The ID of each student is <strong>unique</strong>.</p>\n\n<p>Given an integer <code>k</code>, return <em>the top </em><code>k</code><em> students after ranking them in <strong>non-increasing</strong> order by their points</em>. In case more than one student has the same points, the one with the lower ID ranks higher.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> positive_feedback = ["smart","brilliant","studious"], negative_feedback = ["not"], report = ["this student is studious","the student is smart"], student_id = [1,2], k = 2\n<strong>Output:</strong> [1,2]\n<strong>Explanation:</strong> \nBoth the students have 1 positive feedback and 3 points but since student 1 has a lower ID he ranks higher.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> positive_feedback = ["smart","brilliant","studious"], negative_feedback = ["not"], report = ["this student is not studious","the student is smart"], student_id = [1,2], k = 2\n<strong>Output:</strong> [2,1]\n<strong>Explanation:</strong> \n- The student with ID 1 has 1 positive feedback and 1 negative feedback, so he has 3-1=2 points. \n- The student with ID 2 has 1 positive feedback, so he has 3 points. \nSince student 2 has more points, [2,1] is returned.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= positive_feedback.length, negative_feedback.length <= 10<sup>4</sup></code></li>\n\t<li><code>1 <= positive_feedback[i].length, negative_feedback[j].length <= 100</code></li>\n\t<li>Both <code>positive_feedback[i]</code> and <code>negative_feedback[j]</code> consists of lowercase English letters.</li>\n\t<li>No word is present in both <code>positive_feedback</code> and <code>negative_feedback</code>.</li>\n\t<li><code>n == report.length == student_id.length</code></li>\n\t<li><code>1 <= n <= 10<sup>4</sup></code></li>\n\t<li><code>report[i]</code> consists of lowercase English letters and spaces <code>' '</code>.</li>\n\t<li>There is a single space between consecutive words of <code>report[i]</code>.</li>\n\t<li><code>1 <= report[i].length <= 100</code></li>\n\t<li><code>1 <= student_id[i] <= 10<sup>9</sup></code></li>\n\t<li>All the values of <code>student_id[i]</code> are <strong>unique</strong>.</li>\n\t<li><code>1 <= k <= n</code></li>\n</ul>\n",
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"code": "class Solution {\npublic:\n vector<int> topStudents(vector<string>& positive_feedback, vector<string>& negative_feedback, vector<string>& report, vector<int>& student_id, int k) {\n \n }\n};",
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"code": "class Solution(object):\n def topStudents(self, positive_feedback, negative_feedback, report, student_id, k):\n \"\"\"\n :type positive_feedback: List[str]\n :type negative_feedback: List[str]\n :type report: List[str]\n :type student_id: List[int]\n :type k: int\n :rtype: List[int]\n \"\"\"\n ",
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"code": "public class Solution {\n public IList<int> TopStudents(string[] positive_feedback, string[] negative_feedback, string[] report, int[] student_id, int k) {\n \n }\n}",
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"code": "/**\n * @param {string[]} positive_feedback\n * @param {string[]} negative_feedback\n * @param {string[]} report\n * @param {number[]} student_id\n * @param {number} k\n * @return {number[]}\n */\nvar topStudents = function(positive_feedback, negative_feedback, report, student_id, k) {\n \n};",
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"code": "# @param {String[]} positive_feedback\n# @param {String[]} negative_feedback\n# @param {String[]} report\n# @param {Integer[]} student_id\n# @param {Integer} k\n# @return {Integer[]}\ndef top_students(positive_feedback, negative_feedback, report, student_id, k)\n \nend",
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"code": "class Solution {\n func topStudents(_ positive_feedback: [String], _ negative_feedback: [String], _ report: [String], _ student_id: [Int], _ k: Int) -> [Int] {\n \n }\n}",
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"code": "impl Solution {\n pub fn top_students(positive_feedback: Vec<String>, negative_feedback: Vec<String>, report: Vec<String>, student_id: Vec<i32>, k: i32) -> Vec<i32> {\n \n }\n}",
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"code": "class Solution {\n\n /**\n * @param String[] $positive_feedback\n * @param String[] $negative_feedback\n * @param String[] $report\n * @param Integer[] $student_id\n * @param Integer $k\n * @return Integer[]\n */\n function topStudents($positive_feedback, $negative_feedback, $report, $student_id, $k) {\n \n }\n}",
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"code": "function topStudents(positive_feedback: string[], negative_feedback: string[], report: string[], student_id: number[], k: number): number[] {\n\n};",
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"code": "(define/contract (top-students positive_feedback negative_feedback report student_id k)\n (-> (listof string?) (listof string?) (listof string?) (listof exact-integer?) exact-integer? (listof exact-integer?))\n\n )",
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"code": "-spec top_students(Positive_feedback :: [unicode:unicode_binary()], Negative_feedback :: [unicode:unicode_binary()], Report :: [unicode:unicode_binary()], Student_id :: [integer()], K :: integer()) -> [integer()].\ntop_students(Positive_feedback, Negative_feedback, Report, Student_id, K) ->\n .",
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"code": "defmodule Solution do\n @spec top_students(positive_feedback :: [String.t], negative_feedback :: [String.t], report :: [String.t], student_id :: [integer], k :: integer) :: [integer]\n def top_students(positive_feedback, negative_feedback, report, student_id, k) do\n\n end\nend",
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"hints": [
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"Hash the positive and negative feedback words separately.",
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"Calculate the points for each student’s feedback.",
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"Sort the students accordingly to find the top <em>k</em> among them."
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],
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"solution": null,
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"sampleTestCase": "[\"smart\",\"brilliant\",\"studious\"]\n[\"not\"]\n[\"this student is studious\",\"the student is smart\"]\n[1,2]\n2",
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"metaData": "{\n \"name\": \"topStudents\",\n \"params\": [\n {\n \"name\": \"positive_feedback\",\n \"type\": \"string[]\"\n },\n {\n \"type\": \"string[]\",\n \"name\": \"negative_feedback\"\n },\n {\n \"type\": \"string[]\",\n \"name\": \"report\"\n },\n {\n \"type\": \"integer[]\",\n \"name\": \"student_id\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"k\"\n }\n ],\n \"return\": {\n \"type\": \"list<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>. 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