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.
[603, 175, 790, -542, 679, 74, 870, 58, 939, 782, 686, -767, -508, 314, -409, -703, 102, -216, -360, -670]