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:
[-28, -26, -60, 64, -18, 90, 91]

Ex Output:
1


Ex Input:
[19, 68, 23, -21, -57, -33]

Ex Output:
4


Ex Input:
[88, -55, -63, 40]

Ex Output:

8