find-the-closest-palindrome

Find the Closest Palindrome

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nearestPalindromic

Given a string <code>n</code> representing an integer, return the closest integer (not including itself), which is a palindrome. If there is a tie, return the smaller one.

The closest is defined as the absolute difference minimized between two integers.

&nbsp;
Example 1:

<pre>
Input: n = &quot;123&quot;
Output: &quot;121&quot;
</pre>

Example 2:

<pre>
Input: n = &quot;1&quot;
Output: &quot;0&quot;
Explanation: 0 and 2 are the closest palindromes but we return the smallest which is 0.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= n.length &lt;= 18</code></li>
	<li><code>n</code> consists of only digits.</li>
	<li><code>n</code> does not have leading zeros.</li>
	<li><code>n</code> is representing an integer in the range <code>[1, 1018 - 1]</code>.</li>
</ul>

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