import java.util.NoSuchElementException;

public class Q4 {
    public void removeLowestGrade () {
        if (head == null) {
            throw new NoSuchElementException("List was empty");
        }
        if (head.next == null) {
            //if only one element
            head = null;
        }

        GradeNode smallest = head;
        GradeNode index = head;
        while(index.next != null) {
            if (index.next.grade < smallest.grade) {
                smallest = index;
            }
            index = index.next;
        }
        smallest.next = smallest.next.next;
    }
}