Minimum Moves to Equal Array Elements II
<p>Given an integer array <code>nums</code> of size <code>n</code>, return <em>the minimum number of moves required to make all array elements equal</em>.</p>

<p>In one move, you can increment or decrement an element of the array by <code>1</code>.</p>

<p>Test cases are designed so that the answer will fit in a <strong>32-bit</strong> integer.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<pre>
<strong>Input:</strong> nums = [1,2,3]
<strong>Output:</strong> 2
<strong>Explanation:</strong>
Only two moves are needed (remember each move increments or decrements one element):
[<u>1</u>,2,3]  =&gt;  [2,2,<u>3</u>]  =&gt;  [2,2,2]
</pre>

<p><strong class="example">Example 2:</strong></p>

<pre>
<strong>Input:</strong> nums = [1,10,2,9]
<strong>Output:</strong> 16
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>n == nums.length</code></li>
	<li><code>1 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>
	<li><code>-10<sup>9</sup> &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>
</ul>
Array; Math; Sorting
function minMoves2(nums: number[]): number {
    nums.sort((a, b) => a - b);
    const k = nums[nums.length >> 1];
    return nums.reduce((r, v) => r + Math.abs(v - k), 0);
}
