下面 search 函数的平均时间复杂度为（ ）。
int search(int n, int * p, int target) {
int low = 0, high = n;
while (low < high) {
int middle = (low + high) / 2;
if (target == p[middle]) {
return middle;
} else if (target > p[middle]) {
low = middle + 1;
} else {
high = middle;
}
}
return -1;
}
- A.
- B.
- C.
- D.