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.

Ex Input:
[20, 54, 4]

Ex Output:
16


Ex Input:
[-21, 93, 99, -36, -87]

Ex Output:
6


Ex Input:
[12, -90, -42, -61, -67]

Ex Output:

6