I need detail explanation for this.

For problem 2

Doing it for each of a,b,c from problem 1, so should have 12 answers. 4 for each of the sorted, reversed, and random inputs

1. Using the quicksort implementation in this chapter, determine the running time of quicksort for

a. sorted input

b. reverse-ordered input

c. random input

2.Repeat problem 1 when the pivot is chosen as

a. the first element

b. the larger of the first two distinct elements

c. a random element

d. the average of all elements in the set