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: [628, 429, 201, -636, -124, 546, -589, -863, 176, 19, 334, 628, -354, 157, 755, -999, -571, 634]

[-636, -999]