658. Find K Closest Elements 
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Problem
Given a sorted integer array arr, two integers k and x, return the k closest integers to x in the array. The result should also be sorted in ascending order.
An integer a is closer to x than an integer b if:
|a - x| < |b - x|, or|a - x| == |b - x|anda < b
Example 1:
Input: arr = [1,2,3,4,5], k = 4, x = 3 Output: [1,2,3,4]
Example 2:
Input: arr = [1,2,3,4,5], k = 4, x = -1 Output: [1,2,3,4]
Constraints:
1 <= k <= arr.length1 <= arr.length <= 104arris sorted in ascending order.-104 <= arr[i], x <= 104