intcount=1;while(count<n){count=count*2;}n是問題的規(guī)模,請(qǐng)問該算法的時(shí)間復(fù)雜度是()
A.O(1) B.O(n) C.O(log2n) D.O(n3)
A.常數(shù)階 B.線性階 C.平方階 D.對(duì)數(shù)階