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:
[97, -58, 12, 63, 19, 71, -31, 36, -72]

Ex Output:
7


Ex Input:
[97, -19, -81, 14]

Ex Output:
33


Ex Input:
[-19, -84, -40, 80]

Ex Output:

21