In this task, you are given a list of unique integers you need to swap the positions of maximum and minimum element in the list and return the updated list.

[382, 46, 60, 442, 155, 302, 345, 61, 277, 283, 393, 135, 452, 94, 322, 176, 64, 16, 121, 79]
[382, 46, 60, 442, 155, 302, 345, 61, 277, 283, 393, 135, 16, 94, 322, 176, 64, 452, 121, 79]