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Quicksort with equal element values. ( 3 0 points ) The analysis of the expected running time of randomized Quicksort in class ( corresponding to
Quicksort with equal element values. points The analysis of the expected
running time of randomized Quicksort in class corresponding to Section in textbook
assumes that all element values are distinct. In this problem, we examine what happens
when they are not, ie there exist samevalued elements in the array to be sorted.
The Quicksort algorithm relies on the following partition algorithm, which finds a pivot
randomly, and then put all the numbers less than or equal to the pivot in the left, and put
all the numbers greater than the pivot in the right, and then return the pivot location,
as well as the left and right sublists for recursive calls.
Algorithm : Partition
RANDOM; generate a random number in the range of
empty list, empty list;
for each element in A except :
if :
append a to ;
else append a to ;
append;
returen q;
In this algorithm, the list to be sorted is and we use and to denote the leftmost and
rightmost indices of the currently processing subarray, respectively. For example, in the
initial call of the Quicksort algorithm, we will let and which correspond to
the whole original array. The Partition procedure returns an index such that
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