mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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196 lines
29 KiB
JSON
196 lines
29 KiB
JSON
{
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"questionId": "2603",
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"questionFrontendId": "2512",
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"categoryTitle": "Algorithms",
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"boundTopicId": 2029965,
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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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"translatedTitle": "奖励最顶尖的 K 名学生",
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"translatedContent": "<p>给你两个字符串数组 <code>positive_feedback</code> 和 <code>negative_feedback</code> ，分别包含表示正面的和负面的词汇。<strong>不会</strong> 有单词同时是正面的和负面的。</p>\n\n<p>一开始，每位学生分数为 <code>0</code> 。每个正面的单词会给学生的分数 <strong>加 </strong><code>3</code> 分，每个负面的词会给学生的分数 <strong>减 </strong> <code>1</code> 分。</p>\n\n<p>给你 <code>n</code> 个学生的评语，用一个下标从 <strong>0</strong> 开始的字符串数组 <code>report</code> 和一个下标从 <strong>0</strong> 开始的整数数组 <code>student_id</code> 表示，其中 <code>student_id[i]</code> 表示这名学生的 ID ，这名学生的评语是 <code>report[i]</code> 。每名学生的 ID <strong>互不相同</strong>。</p>\n\n<p>给你一个整数 <code>k</code> ，请你返回按照得分 <strong>从高到低</strong> 最顶尖的<em> </em><code>k</code> 名学生。如果有多名学生分数相同，ID 越小排名越前。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><b>输入：</b>positive_feedback = [\"smart\",\"brilliant\",\"studious\"], negative_feedback = [\"not\"], report = [\"this student is studious\",\"the student is smart\"], student_id = [1,2], k = 2\n<b>输出：</b>[1,2]\n<b>解释：</b>\n两名学生都有 1 个正面词汇，都得到 3 分，学生 1 的 ID 更小所以排名更前。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><b>输入：</b>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<b>输出：</b>[2,1]\n<b>解释：</b>\n- ID 为 1 的学生有 1 个正面词汇和 1 个负面词汇，所以得分为 3-1=2 分。\n- ID 为 2 的学生有 1 个正面词汇，得分为 3 分。\n学生 2 分数更高，所以返回 [2,1] 。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</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><code>positive_feedback[i]</code> 和 <code>negative_feedback[j]</code> 都只包含小写英文字母。</li>\n\t<li><code>positive_feedback</code> 和 <code>negative_feedback</code> 中不会有相同单词。</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> 只包含小写英文字母和空格 <code>' '</code> 。</li>\n\t<li><code>report[i]</code> 中连续单词之间有单个空格隔开。</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><code>student_id[i]</code> 的值 <strong>互不相同</strong> 。</li>\n\t<li><code>1 <= k <= n</code></li>\n</ul>\n",
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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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"sampleTestCase": "[\"smart\",\"brilliant\",\"studious\"]\n[\"not\"]\n[\"this student is studious\",\"the student is smart\"]\n[1,2]\n2",
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