TASK DEFINITION: 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.
PROBLEM: [20, 43, 2, -55]

SOLUTION: 18

PROBLEM: [-61, -18, 87, 64, 92, -41, 30, 84]

SOLUTION: 3

PROBLEM: [-91, -42, -6, 54, -4, 21]

SOLUTION:
2