Definition: In this task you will be given a list of integers. You should only return an integer if the first digit is the same as the last digit in the number. If an integer has a single digit, then it should be returned. If there are no integers that start and end with the same digit then an empty list ("[]") should be returned.
Input: [21, 382, 547, 515, -639, 832, -18, -936, -611, 895, -422, 174, -357, -561, -17, 4, 346, 506, -583, 580, 156, 132, -10]

[515, 4]