add-to-array-form-of-integer.md

<p>For a non-negative integer <code>X</code>, the&nbsp;<em>array-form of <code>X</code></em>&nbsp;is an array of its digits in left to right order.&nbsp; For example, if <code>X = 1231</code>, then the array form is&nbsp;<code>[1,2,3,1]</code>.</p>

<p>Given the array-form <code>A</code> of a non-negative&nbsp;integer <code>X</code>, return the array-form of the integer <code>X+K</code>.</p>

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<p><strong>Example 1:</strong></p>

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<strong>Input: </strong>A = <span id="example-input-1-1">[1,2,0,0]</span>, K = 34
<strong>Output: </strong><span id="example-output-1">[1,2,3,4]</span>
<strong>Explanation: </strong>1200 + 34 = 1234
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<p><strong>Example 2:</strong></p>

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<strong>Input: </strong>A = <span id="example-input-2-1">[2,7,4]</span>, K = <span id="example-input-2-2">181</span>
<strong>Output: </strong><span id="example-output-2">[4,5,5]</span>
<strong>Explanation: </strong>274 + 181 = 455
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<p><strong>Example 3:</strong></p>

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<strong>Input: </strong>A = <span id="example-input-3-1">[2,1,5]</span>, K = <span id="example-input-3-2">806</span>
<strong>Output: </strong><span id="example-output-3">[1,0,2,1]</span>
<strong>Explanation: </strong>215 + 806 = 1021
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<p><strong>Example 4:</strong></p>

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<strong>Input: </strong>A = <span id="example-input-4-1">[9,9,9,9,9,9,9,9,9,9]</span>, K = <span id="example-input-4-2">1</span>
<strong>Output: </strong><span id="example-output-4">[1,0,0,0,0,0,0,0,0,0,0]</span>
<strong>Explanation: </strong>9999999999 + 1 = 10000000000
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<p>&nbsp;</p>

<p><strong>Note：</strong></p>

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	<li><code>1 &lt;= A.length &lt;= 10000</code></li>
	<li><code>0 &lt;= A[i] &lt;= 9</code></li>
	<li><code>0 &lt;= K &lt;= 10000</code></li>
	<li>If <code>A.length &gt; 1</code>, then <code>A[0] != 0</code></li>
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