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

SOLUTION: 2

PROBLEM: [-89, 51, 48, 64, 13, -97, 68]

SOLUTION: 3

PROBLEM: [28, 51, -38, -28, -69, 46, -51]

SOLUTION:
5