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.
[-594, 858, 821, 735, 788, -332, -530, 300, 228, 748, 425, 935, 891, 74, -502, -597, 557, 662, 247, -199, -135]