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:
[-21, 11, 84, -2, 26, 64, 54, -49, 28]

Ex Output:
2


Ex Input:
[-72, -74, -52, -34]

Ex Output:
2


Ex Input:
[-62, 23, -22]

Ex Output:

40