单选题

求其时间复杂度( ) int i = 1, n = 100...

Question

求其时间复杂度( )

int i = 1, n = 100

while(i < n){

    i = i * 2

}

A. O(log2n)

B. O(n)

C. O(nlog2n)

D. O(n2)