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: [593, 856, -171, 223, 459, 943, -977, 842, -618, 668, 300, 594, 436, 372, -506, -904, -150, -999, -722]

[-171, -999]