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.
[554, -45, 893, 261, 212, -329, 91, -1000, -646, 825, 453, -573, 452, 132, 699, 189, -489, 339]