Find Closest Number to Zero
<p>Given an integer array <code>nums</code> of size <code>n</code>, return <em>the number with the value <strong>closest</strong> to </em><code>0</code><em> in </em><code>nums</code>. If there are multiple answers, return <em>the number with the <strong>largest</strong> value</em>.</p>
<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<pre>
<strong>Input:</strong> nums = [-4,-2,1,4,8]
<strong>Output:</strong> 1
<strong>Explanation:</strong>
The distance from -4 to 0 is |-4| = 4.
The distance from -2 to 0 is |-2| = 2.
The distance from 1 to 0 is |1| = 1.
The distance from 4 to 0 is |4| = 4.
The distance from 8 to 0 is |8| = 8.
Thus, the closest number to 0 in the array is 1.
</pre>

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

<pre>
<strong>Input:</strong> nums = [2,-1,1]
<strong>Output:</strong> 1
<strong>Explanation:</strong> 1 and -1 are both the closest numbers to 0, so 1 being larger is returned.
</pre>

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

<ul>
	<li><code>1 &lt;= n &lt;= 1000</code></li>
	<li><code>-10<sup>5</sup> &lt;= nums[i] &lt;= 10<sup>5</sup></code></li>
</ul>
Array
func findClosestNumber(nums []int) int {
	ans, d := 0, 1<<30
	for _, x := range nums {
		if y := abs(x); y < d || (y == d && x > ans) {
			ans, d = x, y
		}
	}
	return ans
}

func abs(x int) int {
	if x < 0 {
		return -x
	}
	return x
}