Computers and Technology, 12.08.2020 17:01 blackopsty23
What is the time complexity of the following algorithm power(n, x).? Assume that each operation takes a unit time.
LongPower(int n, int x)
long ans
if(na=0) return
else 1
ans Power (n/2, x) Power (n/2, x);
if (n % 2 = 1)ans*-x;
return ans;
T(n)=T(n-1) +0(1)
T(n)=T(n/2) T(n/2)+0(1)
T(n) = 2T(n/2) + 0(1)
T(n) = 2T(n-1 ) + 0(1)
Answers: 3
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