Quick sort in descending order

Question

I understand we can do the quick sort to sort the number in ascending order using PIVOT theory, but how do i modify (THEORY) to sort the number in descending order?

Answer 1

Place the numbers on the oppisite side ?

Answer 2

How to perform the swap and how to compare the value? Like step by step

Answer 3

Place a NOT in front of the logical expression that compares elements.