Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
[9, 40, -33, 12, 17, -32, 40]
Solution: 0
Reason: The minimum absolute difference is 0 because '40 - 40 = 0' and '40' appears in the list twice. So this is a good example.

Now, solve this instance: [-55, 21, 76]
Student:
55