leetcode-problemset/leetcode-cn/originData/distinct-echo-substrings.json

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            "questionFrontendId": "1316",
            "categoryTitle": "Algorithms",
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            "title": "Distinct Echo Substrings",
            "titleSlug": "distinct-echo-substrings",
            "content": "<p>Return the number of <strong>distinct</strong> non-empty substrings of <code>text</code>&nbsp;that can be written as the concatenation of some string with itself (i.e. it can be written as <code>a + a</code>&nbsp;where <code>a</code> is some string).</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> text = &quot;abcabcabc&quot;\n<strong>Output:</strong> 3\n<b>Explanation: </b>The 3 substrings are &quot;abcabc&quot;, &quot;bcabca&quot; and &quot;cabcab&quot;.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> text = &quot;leetcodeleetcode&quot;\n<strong>Output:</strong> 2\n<b>Explanation: </b>The 2 substrings are &quot;ee&quot; and &quot;leetcodeleetcode&quot;.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= text.length &lt;= 2000</code></li>\n\t<li><code>text</code>&nbsp;has only lowercase English letters.</li>\n</ul>\n",
            "translatedTitle": "不同的循环子字符串",
            "translatedContent": "<p>给你一个字符串&nbsp;<code>text</code> ，请你返回满足下述条件的&nbsp;<strong>不同</strong> 非空子字符串的数目：</p>\n\n<ul>\n\t<li>可以写成某个字符串与其自身相连接的形式（即，可以写为 <code>a&nbsp;+ a</code>，其中 <code>a</code> 是某个字符串）。</li>\n</ul>\n\n<p>例如，<code>abcabc</code>&nbsp;就是&nbsp;<code>abc</code>&nbsp;和它自身连接形成的。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>text = &quot;abcabcabc&quot;\n<strong>输出：</strong>3\n<strong>解释：</strong>3 个子字符串分别为 &quot;abcabc&quot;，&quot;bcabca&quot; 和 &quot;cabcab&quot; 。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>text = &quot;leetcodeleetcode&quot;\n<strong>输出：</strong>2\n<strong>解释：</strong>2 个子字符串为 &quot;ee&quot; 和 &quot;leetcodeleetcode&quot; 。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= text.length &lt;= 2000</code></li>\n\t<li><code>text</code>&nbsp;只包含小写英文字母。</li>\n</ul>\n",
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            "hints": [
                "Given a substring of the text, how to check if it can be written as the concatenation of a string with itself ?",
                "We can do that in linear time, a faster way is to use hashing.",
                "Try all substrings and use hashing to check them."
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            "sampleTestCase": "\"abcabcabc\"",
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