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: [31, 504, 17, -504, -771, 835, 356, -902, -19, -341, 543, 40, 598, 632, 627, 233, -163, -989, 637, 239, 406, 729, -999, 103]

[-989, -999]