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36 lines
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36 lines
1.0 KiB
HTML
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<p>Given a string <code>s</code> which consists of lowercase or uppercase letters, return <em>the length of the <strong>longest palindrome</strong></em> that can be built with those letters.</p>
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<p>Letters are <strong>case sensitive</strong>, for example, <code>"Aa"</code> is not considered a palindrome here.</p>
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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 = "abccccdd"
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<strong>Output:</strong> 7
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<strong>Explanation:</strong>
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One longest palindrome that can be built is "dccaccd", whose length is 7.
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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 = "a"
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<strong>Output:</strong> 1
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</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> s = "bb"
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<strong>Output:</strong> 2
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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 <= 2000</code></li>
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<li><code>s</code> consists of lowercase <strong>and/or</strong> uppercase English letters only.</li>
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</ul>
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