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.
[-435, 788, -315, 936, 667, -617, 584, 847, -957, -142, 580, -588, -954, 453, -397, 477, 560, -965, 664, -31, -356]