Daily LeetCode – day0082 1700. Number of Students Unable to Eat Lunch

// 1700. Number of Students Unable to Eat Lunch
class Solution {
    public int countStudents(int[] students, int[] sandwiches) {
        int circleStudents = 0;
        int squareStudents = 0;
        for (int student : students) {
            if (student == 0) ++circleStudents;
            else ++squareStudents;
        }
        for (int sandwich : sandwiches) {
            if (sandwich == 0) {
                if (circleStudents > 0) --circleStudents;
                else return squareStudents;
            } else {
                if (squareStudents > 0) --squareStudents;
                else return circleStudents;
            }
        }
        return 0;
    }
}

学习笔记：
这是一道简单题，虽说看上去说是队列和栈，实际上根本都用不到。
就只需要统计一下学生，反正学生不喜欢会继续排的。
一直到栈顶的三文治没人拿为止，那剩下的那一类学生都要挨饿。