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, -69, -29, -13]

SOLUTION: 7

PROBLEM: [-59, -97, -61, -87, 73, -53, -57]

SOLUTION: 2

PROBLEM: [-93, -25, -16, 78, -7, 90, -45, 49]

SOLUTION:
9