while Loops

AP Computer Science A· difficulty 3/5

int n = 64;
int count = 0;
while (n > 1) {
  n /= 2;
  count++;
}
System.out.println(count);

What is printed?

A
$6$
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B
$5$
C
$7$
D
$64$

Explanation

n: 64 -> 32 (count=1) -> 16 (2) -> 8 (3) -> 4 (4) -> 2 (5) -> 1 (6). When n=1, condition n>1 is false, exit. count = 6 (which is log2(64)).

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