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What is the best case time complexity of radix sort algorithm?

What is the best case time complexity of radix sort algorithm? Correct Answer Ω(nk)

Concept

The radix sorting algorithm is an integer sorting algorithm, that sorts by grouping numbers by their individual digits (or by their radix). It uses each radix/digit as a key, and implements counting sort or bucket sort under the hood in order to do the work of sorting

Worst case time

O ( n )

Best case time

O ( n )

Average case time

O ( n )

Space

O(n)

Hence Option 4 is correct

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