Find Continuous Subarray with Identical Elements

Find Continuous Subarray with Identical Elements Given an integer array arr, find and return a contiguous subarray that contains two identical numbers consecutively. The returning subarray should be the shortest one. If there are multiple possible subarrays, return the first one. Input An integer array arr with length range [1, 10^5]. Output Return an array representing the found subarray. Example Input: [1, 2, 2, 3, 4] Output: [2, 2] Input: [4, 1, 1, 1, 5] Output: [1, 1] Example Input 1 1 2 2 3 4