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.

[43, 34, 44, -40, -37, -38, -21, 86, -13]
1

[5, -50, 62, 30, -18, 45]
15

[68, 77, -12, 12, -76, -69, -62, -66, -63]

1