nth-digit.md

<p>Find the <i>n</i><sup>th</sup> digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... </p>

<p><b>Note:</b><br />
<i>n</i> is positive and will fit within the range of a 32-bit signed integer (<i>n</i> < 2<sup>31</sup>).
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<p><b>Example 1:</b>
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<b>Input:</b>
3

<b>Output:</b>
3
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<p><b>Example 2:</b>
<pre>
<b>Input:</b>
11

<b>Output:</b>
0

<b>Explanation:</b>
The 11th digit of the sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... is a 0, which is part of the number 10.
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