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.

[37, -75, 58, -93, 86, -21, -56]
18

[54, -19, -47, -3]
16

[-19, -55, -48]

7