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.
[-663, 264, 305, -225, -215, 156, -607, -390, 923, 515, 579, 653, -357, 567, -883, -319, -107, -22, 666, 435]