leetcode-problemset/leetcode-cn/originData/circular-sentence.json

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        "question": {
            "questionId": "2580",
            "questionFrontendId": "2490",
            "categoryTitle": "Algorithms",
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            "title": "Circular Sentence",
            "titleSlug": "circular-sentence",
            "content": "<p>A <strong>sentence</strong> is a list of words that are separated by a<strong> single</strong> space with no leading or trailing spaces.</p>\n\n<ul>\n\t<li>For example, <code>&quot;Hello World&quot;</code>, <code>&quot;HELLO&quot;</code>, <code>&quot;hello world hello world&quot;</code> are all sentences.</li>\n</ul>\n\n<p>Words consist of <strong>only</strong> uppercase and lowercase English letters. Uppercase and lowercase English letters are considered different.</p>\n\n<p>A sentence is <strong>circular </strong>if:</p>\n\n<ul>\n\t<li>The last character of a word is equal to the first character of the next word.</li>\n\t<li>The last character of the last word is equal to the first character of the first word.</li>\n</ul>\n\n<p>For example, <code>&quot;leetcode exercises sound delightful&quot;</code>, <code>&quot;eetcode&quot;</code>, <code>&quot;leetcode eats soul&quot; </code>are all circular sentences. However, <code>&quot;Leetcode is cool&quot;</code>, <code>&quot;happy Leetcode&quot;</code>, <code>&quot;Leetcode&quot;</code> and <code>&quot;I like Leetcode&quot;</code> are <strong>not</strong> circular sentences.</p>\n\n<p>Given a string <code>sentence</code>, return <code>true</code><em> if it is circular</em>. Otherwise, return <code>false</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> sentence = &quot;leetcode exercises sound delightful&quot;\n<strong>Output:</strong> true\n<strong>Explanation:</strong> The words in sentence are [&quot;leetcode&quot;, &quot;exercises&quot;, &quot;sound&quot;, &quot;delightful&quot;].\n- leetcod<u>e</u>&#39;s&nbsp;last character is equal to <u>e</u>xercises&#39;s first character.\n- exercise<u>s</u>&#39;s&nbsp;last character is equal to <u>s</u>ound&#39;s first character.\n- soun<u>d</u>&#39;s&nbsp;last character is equal to <u>d</u>elightful&#39;s first character.\n- delightfu<u>l</u>&#39;s&nbsp;last character is equal to <u>l</u>eetcode&#39;s first character.\nThe sentence is circular.</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> sentence = &quot;eetcode&quot;\n<strong>Output:</strong> true\n<strong>Explanation:</strong> The words in sentence are [&quot;eetcode&quot;].\n- eetcod<u>e</u>&#39;s&nbsp;last character is equal to <u>e</u>etcode&#39;s first character.\nThe sentence is circular.</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> sentence = &quot;Leetcode is cool&quot;\n<strong>Output:</strong> false\n<strong>Explanation:</strong> The words in sentence are [&quot;Leetcode&quot;, &quot;is&quot;, &quot;cool&quot;].\n- Leetcod<u>e</u>&#39;s&nbsp;last character is <strong>not</strong> equal to <u>i</u>s&#39;s first character.\nThe sentence is <strong>not</strong> circular.</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= sentence.length &lt;= 500</code></li>\n\t<li><code>sentence</code> consist of only lowercase and uppercase English letters and spaces.</li>\n\t<li>The words in <code>sentence</code> are separated by a single space.</li>\n\t<li>There are no leading or trailing spaces.</li>\n</ul>\n",
            "translatedTitle": "回环句",
            "translatedContent": "<p><strong>句子</strong> 是由单个空格分隔的一组单词，且不含前导或尾随空格。</p>\n\n<ul>\n\t<li>例如，<code>\"Hello World\"</code>、<code>\"HELLO\"</code>、<code>\"hello world hello world\"</code> 都是符合要求的句子。</li>\n</ul>\n\n<p>单词 <strong>仅</strong> 由大写和小写英文字母组成。且大写和小写字母会视作不同字符。</p>\n\n<p>如果句子满足下述全部条件，则认为它是一个 <strong>回环句</strong> ：</p>\n\n<ul>\n\t<li>单词的最后一个字符和下一个单词的第一个字符相等。</li>\n\t<li>最后一个单词的最后一个字符和第一个单词的第一个字符相等。</li>\n</ul>\n\n<p>例如，<code>\"leetcode exercises sound delightful\"</code>、<code>\"eetcode\"</code>、<code>\"leetcode eats soul\"</code> 都是回环句。然而，<code>\"Leetcode is cool\"</code>、<code>\"happy Leetcode\"</code>、<code>\"Leetcode\"</code> 和 <code>\"I like Leetcode\"</code> 都 <strong>不</strong> 是回环句。</p>\n\n<p>给你一个字符串 <code>sentence</code> ，请你判断它是不是一个回环句。如果是，返回 <code>true</code><em> </em>；否则，返回 <code>false</code> 。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>sentence = \"leetcode exercises sound delightful\"\n<strong>输出：</strong>true\n<strong>解释：</strong>句子中的单词是 [\"leetcode\", \"exercises\", \"sound\", \"delightful\"] 。\n- leetcod<strong><em>e</em></strong> 的最后一个字符和 <strong><em>e</em></strong>xercises 的第一个字符相等。\n- exercise<em><strong>s</strong></em> 的最后一个字符和 <em><strong>s</strong></em>ound 的第一个字符相等。\n- <em><strong>s</strong></em>ound 的最后一个字符和 delightfu<em><strong>l</strong></em> 的第一个字符相等。\n- delightfu<em><strong>l</strong></em> 的最后一个字符和 <em><strong>l</strong></em>eetcode 的第一个字符相等。\n这个句子是回环句。</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>sentence = \"eetcode\"\n<strong>输出：</strong>true\n<strong>解释：</strong>句子中的单词是 [\"eetcode\"] 。\n- eetcod<em><strong>e</strong></em> 的最后一个字符和 <em><strong>e</strong></em>etcod<em>e</em> 的第一个字符相等。\n这个句子是回环句。</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<strong>输入：</strong>sentence = \"Leetcode is cool\"\n<strong>输出：</strong>false\n<strong>解释：</strong>句子中的单词是 [\"Leetcode\", \"is\", \"cool\"] 。\n- Leetcod<em><strong>e</strong></em>&nbsp;的最后一个字符和 <em><strong>i</strong></em>s 的第一个字符 <strong>不</strong> 相等。 \n这个句子 <strong>不</strong> 是回环句。</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= sentence.length &lt;= 500</code></li>\n\t<li><code>sentence</code> 仅由大小写英文字母和空格组成</li>\n\t<li><code>sentence</code> 中的单词由单个空格进行分隔</li>\n\t<li>不含任何前导或尾随空格</li>\n</ul>\n",
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