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: [-11, 20, -57, -39]

SOLUTION: 18

PROBLEM: [-28, 3, 74, 30, 46, -54, 47, 51]

SOLUTION: 1

PROBLEM: [19, -21, 31, -68, -49, 46, -6]

SOLUTION:
12