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35 lines
1.3 KiB
HTML
35 lines
1.3 KiB
HTML
<p>Given a string <code>s</code>, return the maximum number of ocurrences of <strong>any</strong> substring under the following rules:</p>
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<ul>
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<li>The number of unique characters in the substring must be less than or equal to <code>maxLetters</code>.</li>
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<li>The substring size must be between <code>minSize</code> and <code>maxSize</code> inclusive.</li>
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</ul>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = "aababcaab", maxLetters = 2, minSize = 3, maxSize = 4
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> Substring "aab" has 2 ocurrences in the original string.
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It satisfies the conditions, 2 unique letters and size 3 (between minSize and maxSize).
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = "aaaa", maxLetters = 1, minSize = 3, maxSize = 3
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> Substring "aaa" occur 2 times in the string. It can overlap.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= s.length <= 10<sup>5</sup></code></li>
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<li><code>1 <= maxLetters <= 26</code></li>
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<li><code>1 <= minSize <= maxSize <= min(26, s.length)</code></li>
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<li><code>s</code> consists of only lowercase English letters.</li>
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</ul>
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