Find K Closest Elements at Yandex

Problem Description

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|` and `a < b`

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