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: [-638, 989, 299, 875, 970, -878, 9, 256, 63, -865, -891, -707, -625, 627, -772, 247, -348, 998, -539, -651, -591]

[989, -878, 9, -707]