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Which of the following is not necessarily a stable sorting algorithm?

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in Data Structures & Algorithms II by (111k points)
Which of the following is not necessarily a stable sorting algorithm?

(a) bucket sort

(b) counting sort

(c) merge sort

(d) pigeonhole sort

I got this question by my college director while I was bunking the class.

This intriguing question originated from Sorting topic in section Sorting of Data Structures & Algorithms II

1 Answer

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The correct answer is (a) bucket sort

The explanation is: Bucket sort is not necessarily a stable sorting algorithm. This is because its stability depends on the stability of the algorithm that we have used to sort the individual buckets.

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