下面的 C++ 代码用于在升序数组lst中查找目标值target最后一次出现的位置。相关说法,正确的是(

)。

int binary_search_last_occurrence(const vector<int>& lst, int target) {   if (lst.empty()) return -1;    int low = 0, high = lst.size() - 1;    while (low < high) {     int mid = (low + high + 1) / 2;     if (lst[mid] <= target) {        low = mid;     } else {        high = mid - 1;     }   }    if (lst[low] == target)     return low;   else     return -1;}
填写答案