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.

[-100, 90, -43, 27, -64]
21

[64, -100, -70, -18, -69]
1

[-37, 71, -21]

16