If nothing is known about the elements ahead of time, then any sorting algorithm must take at least O( n ) time to sort the elements, by virtue of the fact that:

A. counting sort takes at least O( n ) time
B. quicksort takes at least O( n lg n ), and you can’t get any faster than that
C. it takes that much of a time complexity just to look at the elements
D. we must always search for an insertion point in O( n ) time


C

Computer Science & Information Technology

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