longest-palindrome.md

<p>Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters.</p>

<p>This is case sensitive, for example <code>"Aa"</code> is not considered a palindrome here.</p>

<p><b>Note:</b><br />
Assume the length of given string will not exceed 1,010.
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<p><b>Example: </b>
<pre>
Input:
"abccccdd"

Output:
7

Explanation:
One longest palindrome that can be built is "dccaccd", whose length is 7.
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