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"translatedContent": "<p>给你一个字符串 <code>s</code> ,颠倒字符串中 <strong>单词</strong> 的顺序。</p>\n\n<p><strong>单词</strong> 是由非空格字符组成的字符串。<code>s</code> 中使用至少一个空格将字符串中的 <strong>单词</strong> 分隔开。</p>\n\n<p>返回 <strong>单词</strong> 顺序颠倒且 <strong>单词</strong> 之间用单个空格连接的结果字符串。</p>\n\n<p><strong>注意:</strong>输入字符串 <code>s</code>中可能会存在前导空格、尾随空格或者单词间的多个空格。返回的结果字符串中,单词间应当仅用单个空格分隔,且不包含任何额外的空格。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"<code>the sky is blue</code>\"\n<strong>输出:</strong>\"<code>blue is sky the</code>\"\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \" &nbsp;hello world &nbsp;\"\n<strong>输出:</strong>\"world hello\"\n<strong>解释:</strong>颠倒后的字符串中不能存在前导空格和尾随空格。\n</pre>\n\n<p><strong>示例 3</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"a good &nbsp; example\"\n<strong>输出:</strong>\"example good a\"\n<strong>解释:</strong>如果两个单词间有多余的空格,颠倒后的字符串需要将单词间的空格减少到仅有一个。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length &lt;= 10<sup>4</sup></code></li>\n\t<li><code>s</code> 包含英文大小写字母、数字和空格 <code>' '</code></li>\n\t<li><code>s</code> 中 <strong>至少存在一个</strong> 单词</li>\n</ul>\n\n<ul>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>进阶:</strong>如果字符串在你使用的编程语言中是一种可变数据类型,请尝试使用&nbsp;<code>O(1)</code> 额外空间复杂度的 <strong>原地</strong> 解法。</p>\n",
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"difficulty": "Medium",
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"similarQuestions": "[{\"title\": \"Reverse Words in a String II\", \"titleSlug\": \"reverse-words-in-a-string-ii\", \"difficulty\": \"Medium\", \"translatedTitle\": \"\\u7ffb\\u8f6c\\u5b57\\u7b26\\u4e32\\u91cc\\u7684\\u5355\\u8bcd II\"}]",
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