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: [-215, 366, -730, 647, 666, -668, -535, 777, 382, -898, 548, -604, 23, 271, 840]

[666, -535, 777, -898]