Q.

What is the least time in which we can raise a number x to power y?

A. o(x)
B. o(y)
C. o(log x)
D. o(log y)
Answer» D. o(log y)
Explanation: we can optimize the code for finding power of a number by calculating x raised to power y/2 only once and using it depending on whether y is even or odd.
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