Which sorting algorithm below is not comparison based?

Which sorting algorithm below is not comparison based?

  1. a) Merge sort
  2. b) Heap sort
  3. c) Counting sort
  4. d) Quick sort

From the BCS Technical Cadre (ICT) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 44 of 106.

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