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.

Example Input: [15, -53, 68, -20, 68, -33, 79, 34, 15]
Example Output: 0

Example Input: [87, -67, -42]
Example Output: 25

Example Input: [39, -52, 20, -93]
Example Output:
19