Number of Students Unable to Eat Lunch LeetCode solution in C++

1
class Solution {
2
 public:
3
  int countStudents(vector<int> &students, vector<int> &sandwiches) {
4
    int size = students.size();
5
    queue<int> student_choice;
6
    for (int i = 0; i < size; ++i) {
7
      student_choice.push(students[i]);
8
    }
9
    int rotations = 0, i = 0;
10
    while (student_choice.size() && rotations < student_choice.size()) {
11
      if (student_choice.front() == sandwiches[i]) {
12
        student_choice.pop();
13
        i++;
14
        rotations = 0;
15
      } else {
16
        int choice = student_choice.front();
17
        student_choice.pop();
18
        student_choice.push(choice);
19
        rotations++;
20
      }
21
    }
22
    return student_choice.size();
23
  }
24
};