quicksort for 3,9,2,7,4,10,19

Expert Solution

venereology answered 5 months ago

quicksort the array step by step 63,19,32,11,87,3,87,24,48,39

Show that the worst case of the Quicksort is Ω(n2)

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Write an implementation of quicksort where the pivot is selected randomly.

in C++, Modify the quicksort algorithm such that it uses the last item as the pivot...

in C++, Modify the quicksort algorithm such that it uses the last item as the pivot instead of the 1st. Also, sort in descending order, instead of ascending order. NOTE: Do not move the last element into the first element of the array. You must treat the algorithm as if the pivot is actually sitting in the last location of the array. After it has been sorted in descending order, go through all the items in the array and make...

What type of algorithm is the Quicksort algorithm if it has random pivots?

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Quicksort - Divider and Conquer Illustrate the operation of PARTITION on the array: A = {9,...

Quicksort - Divider and Conquer Illustrate the operation of PARTITION on the array: A = {9, 19, 13, 5, 12, 8, 7, 4, 21, 6, 11}. Let A[1] = 9 be the pivot value.

Below is the pseudocode for Quicksort and Partition that we talked about in class. As usual...

Below is the pseudocode for Quicksort and Partition that we talked about in class. As usual with recursive functions on arrays, we see the array indices s and e as arguments. Quicksort(A, s, e) sorts the part of the array between s and e inclusively. The initial call (that is, to sort the entire array) is Quicksort(A, 0, n − 1) QuickSort(A, s, e) if s < e p = Partition (A, s, e) // Partition the array and return...

Trace the execution of quicksort on the following array, assuming that the first item in each...

Trace the execution of quicksort on the following array, assuming that the first item in each subarray is the pivot value. Show the values of first and last for each recursive call and the array elements after returning from each call. Also, show the value of pivot during each call and the value returned through pivIndex. How many times is sort called, and how many times is partition called? 55 50 10 40 80 90 60 100 70 80 20...

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