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What is the purpose of using randomized quick sort over standard quick sort?

What is the purpose of using randomized quick sort over standard quick sort? Correct Answer so as to avoid worst case time complexity

Randomized quick sort helps in avoiding the worst case time complexity of O(n2) which occurs in case when the input array is already sorted. However the average case and best case time complexities remain unaltered.

Related Questions

Randomized quick sort is an extension of quicksort where the pivot is chosen randomly. what is the worst case complexity of sorting a numbers using randomized quick sort?
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What is the purpose of using a median of three quick sort over standard quick sort?
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Randomized quick sort is an in place sort.
Randomized quick sort is a stable sort.
Simplify : $${{{5 \over 3} \times {7 \over {51}}{\text{ of }}{{17} \over 5} - {1 \over 3}} \over {{2 \over 9} \times {5 \over 7}{\text{ of }}{{28} \over 5} - {2 \over 3}}}$$
Randomized quicksort is an extension of quicksort where the pivot is chosen randomly. What is the worst case complexity of sorting n number using randomized quicksort?
What is a randomized quick sort?