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Which of the following sorting techniques is stable?

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in Data Structures & Algorithms II by (111k points)
Which of the following sorting techniques is stable?

(a) quick sort

(b) counting sort

(c) heap sort

(d) selection sort

I have been asked this question in a national level competition.

My doubt stems from Sorting topic in section Sorting of Data Structures & Algorithms II

1 Answer

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Best answer
Correct answer is (b) counting sort

For explanation: Counting sort is an example of stable sorting algorithm as the elements with identical values appear in the same order in the output array as they were in the input array.

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