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Which of the following sorting algorithm is stable?

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

(a) Heap sort

(b) Selection sort

(c) In-place MSD radix sort

(d) LSD radix sort

The question was posed to me in an online interview.

My question is taken from Sorting topic in division Sorting of Data Structures & Algorithms II

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Right answer is (d) LSD radix sort

Easiest explanation - In LSD radix sort after sorting the multiple elements with the same key will be in the same order as they were in the input array. So LSD radix sort is stable sort.

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