In this task you will be given a list of integers. You should find the minimum absolute difference between 2 integers in the list. The absolute difference is the absolute value of one integer subtracted by another. The output should be a single integer which is the smallest possible absolute distance.

Example Input: [-21, 11, 84, -2, 26, 64, 54, -49, 28]
Example Output: 2

Example Input: [73, 90, -98, -16, 94, -80, 94]
Example Output: 0

Example Input: [81, 60, 19]
Example Output:
21