leetcode-problemset/leetcode/originData/count-number-of-homogenous-substrings.json

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            "title": "Count Number of Homogenous Substrings",
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            "content": "<p>Given a string <code>s</code>, return <em>the number of <strong>homogenous</strong> substrings of </em><code>s</code><em>.</em> Since the answer may be too large, return it <strong>modulo</strong> <code>10<sup>9</sup> + 7</code>.</p>\n\n<p>A string is <strong>homogenous</strong> if all the characters of the string are the same.</p>\n\n<p>A <strong>substring</strong> is a contiguous sequence of characters within a string.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;abbcccaa&quot;\n<strong>Output:</strong> 13\n<strong>Explanation:</strong> The homogenous substrings are listed as below:\n&quot;a&quot;   appears 3 times.\n&quot;aa&quot;  appears 1 time.\n&quot;b&quot;   appears 2 times.\n&quot;bb&quot;  appears 1 time.\n&quot;c&quot;   appears 3 times.\n&quot;cc&quot;  appears 2 times.\n&quot;ccc&quot; appears 1 time.\n3 + 1 + 2 + 1 + 3 + 2 + 1 = 13.</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;xy&quot;\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> The homogenous substrings are &quot;x&quot; and &quot;y&quot;.</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;zzzzz&quot;\n<strong>Output:</strong> 15\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>s</code> consists of lowercase letters.</li>\n</ul>\n",
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