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>

differenceOfSum

Difference Between Element Sum and Digit Sum of an Array

Add Digits

add-digits

各位相加

Minimum Sum of Four Digit Number After Splitting Digits

minimum-sum-of-four-digit-number-after-splitting-digits

拆分数位后四位数字的最小和

Array

Math

给你一个正整数数组 <code>nums</code> 。

<ul>
	<li>元素和 是 <code>nums</code> 中的所有元素相加求和。</li>
	<li>数字和 是&nbsp;<code>nums</code> 中每一个元素的每一数位（重复数位需多次求和）相加求和。</li>
</ul>

返回 元素和 与 数字和 的绝对差。

注意：两个整数 <code>x</code> 和 <code>y</code> 的绝对差定义为 <code>|x - y|</code> 。

&nbsp;

示例 1：

<pre>
输入：nums = [1,15,6,3]
输出：9
解释：
nums 的元素和是 1 + 15 + 6 + 3 = 25 。
nums 的数字和是 1 + 1 + 5 + 6 + 3 = 16 。
元素和与数字和的绝对差是 |25 - 16| = 9 。
</pre>

示例 2：

<pre>
输入：nums = [1,2,3,4]
输出：0
解释：
nums 的元素和是 1 + 2 + 3 + 4 = 10 。
nums 的数字和是 1 + 2 + 3 + 4 = 10 。
元素和与数字和的绝对差是 |10 - 10| = 0 。
</pre>

&nbsp;

提示：

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