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.

[-11, 20, -57, -39]
18

[-18, -68, -46, -34]
12

[-38, -33, 28, 57]

5