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.
[-666, -28, 623, 11, 944, -596, 231, -840, 229, 684, -789, 450, 806, 777, -333, 969, -437, -975]