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:
[182, 64, 494, 59, 159, 69, 430, 78, 420, 90, 397, 265, 101, 19, 201, 58, 157, 393, 314, 460]

Ex Output:
[182, 64, 19, 59, 159, 69, 430, 78, 420, 90, 397, 265, 101, 494, 201, 58, 157, 393, 314, 460]

Ex Input:
[133, 356, 66, 449, 397, 410, 374, 329, 279, 40, 169, 82, 75, 19, 186, 65, 61, 414, 243, 30]

Ex Output:
[133, 356, 66, 19, 397, 410, 374, 329, 279, 40, 169, 82, 75, 449, 186, 65, 61, 414, 243, 30]

Ex Input:
[147, 345, 70, 396, 326, 125, 55, 221, 43, 223, 122, 241, 374, 372, 487, 210, 488, 276, 308, 218]

Ex Output:
[147, 345, 70, 396, 326, 125, 55, 221, 488, 223, 122, 241, 374, 372, 487, 210, 43, 276, 308, 218]