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.
[-57, -557, -682, -665, 683, 94, 518, -762, -277, -519, -422, -723, 987, 644, 420, -538, 787]