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.

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

[371, 401, 57, 175, 193, 59, 392, 179, 313, 25, 280, 369, 173, 345, 464, 247, 132, 121, 13, 208]
[371, 401, 57, 175, 193, 59, 392, 179, 313, 25, 280, 369, 173, 345, 13, 247, 132, 121, 464, 208]

[33, 439, 485, 138, 228, 443, 339, 421, 118, 21, 215, 182, 220, 265, 186, 153, 160, 43, 213, 256]

[33, 439, 21, 138, 228, 443, 339, 421, 118, 485, 215, 182, 220, 265, 186, 153, 160, 43, 213, 256]