leetcode-problemset/leetcode-cn/originData/top-k-frequent-words.json

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            "title": "Top K Frequent Words",
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            "content": "<p>Given an array of strings <code>words</code> and an integer <code>k</code>, return <em>the </em><code>k</code><em> most frequent strings</em>.</p>\n\n<p>Return the answer <strong>sorted</strong> by <strong>the frequency</strong> from highest to lowest. Sort the words with the same frequency by their <strong>lexicographical order</strong>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;i&quot;,&quot;love&quot;,&quot;leetcode&quot;,&quot;i&quot;,&quot;love&quot;,&quot;coding&quot;], k = 2\n<strong>Output:</strong> [&quot;i&quot;,&quot;love&quot;]\n<strong>Explanation:</strong> &quot;i&quot; and &quot;love&quot; are the two most frequent words.\nNote that &quot;i&quot; comes before &quot;love&quot; due to a lower alphabetical order.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;the&quot;,&quot;day&quot;,&quot;is&quot;,&quot;sunny&quot;,&quot;the&quot;,&quot;the&quot;,&quot;the&quot;,&quot;sunny&quot;,&quot;is&quot;,&quot;is&quot;], k = 4\n<strong>Output:</strong> [&quot;the&quot;,&quot;is&quot;,&quot;sunny&quot;,&quot;day&quot;]\n<strong>Explanation:</strong> &quot;the&quot;, &quot;is&quot;, &quot;sunny&quot; and &quot;day&quot; are the four most frequent words, with the number of occurrence being 4, 3, 2 and 1 respectively.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 500</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 10</code></li>\n\t<li><code>words[i]</code> consists of lowercase English letters.</li>\n\t<li><code>k</code> is in the range <code>[1, The number of <strong>unique</strong> words[i]]</code></li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Follow-up:</strong> Could you solve it in <code>O(n log(k))</code> time and <code>O(n)</code> extra space?</p>\n",
            "translatedTitle": "前K个高频单词",
            "translatedContent": "<p>给定一个单词列表&nbsp;<code>words</code>&nbsp;和一个整数 <code>k</code> ，返回前&nbsp;<code>k</code><em>&nbsp;</em>个出现次数最多的单词。</p>\n\n<p>返回的答案应该按单词出现频率由高到低排序。如果不同的单词有相同出现频率， <strong>按字典顺序</strong> 排序。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入:</strong> words = [\"i\", \"love\", \"leetcode\", \"i\", \"love\", \"coding\"], k = 2\n<strong>输出:</strong> [\"i\", \"love\"]\n<strong>解析:</strong> \"i\" 和 \"love\" 为出现次数最多的两个单词，均为2次。\n    注意，按字母顺序 \"i\" 在 \"love\" 之前。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入:</strong> [\"the\", \"day\", \"is\", \"sunny\", \"the\", \"the\", \"the\", \"sunny\", \"is\", \"is\"], k = 4\n<strong>输出:</strong> [\"the\", \"is\", \"sunny\", \"day\"]\n<strong>解析:</strong> \"the\", \"is\", \"sunny\" 和 \"day\" 是出现次数最多的四个单词，\n    出现次数依次为 4, 3, 2 和 1 次。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>注意：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 500</code></li>\n\t<li><code>1 &lt;= words[i] &lt;= 10</code></li>\n\t<li><code>words[i]</code>&nbsp;由小写英文字母组成。</li>\n\t<li><code>k</code> 的取值范围是&nbsp;<code>[1, <strong>不同</strong> words[i] 的数量]</code></li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>进阶：</strong>尝试以&nbsp;<code>O(n log k)</code> 时间复杂度和&nbsp;<code>O(n)</code> 空间复杂度解决。</p>\n",
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