difference-between-element-sum-and-digit-sum-of-an-array

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Algorithms

You are given a positive integer array <code>nums</code>.

<ul>
	<li>The element sum is the sum of all the elements in <code>nums</code>.</li>
	<li>The digit sum is the sum of all the digits (not necessarily distinct) that appear in <code>nums</code>.</li>
</ul>

Return the absolute difference between the element sum and digit sum of <code>nums</code>.

Note that the absolute difference between two integers <code>x</code> and <code>y</code> is defined as <code>|x - y|</code>.

&nbsp;
Example 1:

<pre>
Input: nums = [1,15,6,3]
Output: 9
Explanation: 
The element sum of nums is 1 + 15 + 6 + 3 = 25.
The digit sum of nums is 1 + 1 + 5 + 6 + 3 = 16.
The absolute difference between the element sum and digit sum is |25 - 16| = 9.
</pre>

Example 2:

<pre>
Input: nums = [1,2,3,4]
Output: 0
Explanation:
The element sum of nums is 1 + 2 + 3 + 4 = 10.
The digit sum of nums is 1 + 2 + 3 + 4 = 10.
The absolute difference between the element sum and digit sum is |10 - 10| = 0.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= nums.length &lt;= 2000</code></li>
	<li><code>1 &lt;= nums[i] &lt;= 2000</code></li>
</ul>