mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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204 lines
24 KiB
JSON
204 lines
24 KiB
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> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = ["i","love","leetcode","i","love","coding"], k = 2\n<strong>Output:</strong> ["i","love"]\n<strong>Explanation:</strong> "i" and "love" are the two most frequent words.\nNote that "i" comes before "love" 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 = ["the","day","is","sunny","the","the","the","sunny","is","is"], k = 4\n<strong>Output:</strong> ["the","is","sunny","day"]\n<strong>Explanation:</strong> "the", "is", "sunny" and "day" are the four most frequent words, with the number of occurrence being 4, 3, 2 and 1 respectively.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= words.length <= 500</code></li>\n\t<li><code>1 <= words[i].length <= 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> </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",
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"translatedTitle": "前K个高频单词",
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"translatedContent": "<p>给定一个单词列表 <code>words</code> 和一个整数 <code>k</code> ，返回前 <code>k</code><em> </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> </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> </p>\n\n<p><strong>注意：</strong></p>\n\n<ul>\n\t<li><code>1 <= words.length <= 500</code></li>\n\t<li><code>1 <= words[i] <= 10</code></li>\n\t<li><code>words[i]</code> 由小写英文字母组成。</li>\n\t<li><code>k</code> 的取值范围是 <code>[1, <strong>不同</strong> words[i] 的数量]</code></li>\n</ul>\n\n<p> </p>\n\n<p><strong>进阶：</strong>尝试以 <code>O(n log k)</code> 时间复杂度和 <code>O(n)</code> 空间复杂度解决。</p>\n",
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href=\\\"https:\\/\\/github.com\\/emirpasic\\/gods\\/tree\\/v1.18.1\\\" target=\\\"_blank\\\">https:\\/\\/godoc.org\\/github.com\\/emirpasic\\/gods@v1.18.1<\\/a> \\u7b2c\\u4e09\\u65b9\\u5e93\\u3002<\\/p>\"],\"python3\":[\"Python3\",\"<p>\\u7248\\u672c\\uff1a<code>Python 3.10<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982<a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/array.html\\\" target=\\\"_blank\\\">array<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/bisect.html\\\" target=\\\"_blank\\\">bisect<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/collections.html\\\" target=\\\"_blank\\\">collections<\\/a>\\u3002 \\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5982\\u9700\\u4f7f\\u7528 Map\\/TreeMap 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"exampleTestcases": "[\"i\",\"love\",\"leetcode\",\"i\",\"love\",\"coding\"]\n2\n[\"the\",\"day\",\"is\",\"sunny\",\"the\",\"the\",\"the\",\"sunny\",\"is\",\"is\"]\n4",
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"__typename": "QuestionNode"
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