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: [-100, 673, -707, 349, 293, -924, -731, 319, -50, -328, 848, -873, 332, 32, -509, -921, 386, 861, 212, -512]

[-707, 848, 212]