reverse-integer

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Algorithms

Given a signed 32-bit integer <code>x</code>, return <code>x</code> with its digits reversed. If reversing <code>x</code> causes the value to go outside the signed 32-bit integer range <code>[-231, 231 - 1]</code>, then return <code>0</code>.

Assume the environment does not allow you to store 64-bit integers (signed or unsigned).

&nbsp;
Example 1:

<pre>
Input: x = 123
Output: 321
</pre>

Example 2:

<pre>
Input: x = -123
Output: -321
</pre>

Example 3:

<pre>
Input: x = 120
Output: 21
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>-231 &lt;= x &lt;= 231 - 1</code></li>
</ul>