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.

Ex Input:
[134, 286, 251, 323, 396, 64, 294, 191, 75, 189, 386, 455, 30, 116, 287, 96, 420, 475, 382, 186]

Ex Output:
[134, 286, 251, 323, 396, 64, 294, 191, 75, 189, 386, 455, 475, 116, 287, 96, 420, 30, 382, 186]

Ex Input:
[444, 80, 22, 47, 182, 429, 316, 131, 432, 75, 342, 474, 442, 495, 212, 59, 354, 346, 242, 71]

Ex Output:
[444, 80, 495, 47, 182, 429, 316, 131, 432, 75, 342, 474, 442, 22, 212, 59, 354, 346, 242, 71]

Ex Input:
[307, 396, 130, 427, 133, 98, 211, 373, 108, 445, 372, 386, 278, 200, 483, 264, 101, 114, 84, 44]

Ex Output:
[307, 396, 130, 427, 133, 98, 211, 373, 108, 445, 372, 386, 278, 200, 44, 264, 101, 114, 84, 483]