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Question 45 2.67 pts When does quicksorts worst-case run-time behavior occur? I when the data is randomly initialized in the
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Answer #1

When does quicksort's worst-case run-time behavior occur?
1. when the data is randomly initialized in the array.
2. when the data is in ascending order.
3. when the data is in descending order.

Answer:- 2 and 3 only (Option number 4)


Explanation:- When array is sorted in either ascending and descending order
then the leftmost and rightmost element is pivot for quicksort
It breaks the array into 1 and N-1 recursively which causes the
complexity of quick sort becomes O(n2) instead of average case
complexity of O(nlogn).

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