/*
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import java.util.ArrayList;
import java.util.Scanner;

class Data {
    public static ArrayList<AssociativeGrade> Grades = new ArrayList<AssociativeGrade>();
    public static ArrayList<AssociativeStudent> Students = new ArrayList<AssociativeStudent>();
}

class AssociativeStudent {

    private String name;
    private String mark1;
    private String mark2;
    private String mark3;
    private String average;
    private String grade;

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return this.name;
    }
    public void setMark1(String mark1) {
        this.mark1 = mark1;
    }
    public String getMark1() {
        return this.mark1;
    }
    public void setMark2(String mark2) {
        this.mark2 = mark2;
    }
    public String getMark2() {
        return this.mark2;
    }
    public void setMark3(String mark3) {
        this.mark3 = mark3;
    }

    public String getMark3() {
        return this.mark3;
    }

    public void setGrade(String grade) {
        this.grade = grade;
    }
    public String getGrade() {
        return this.grade;
    }
    public void setAverage(String average) {
        this.average = average;
    }
    public String getAverage() {
        return this.average;
    }

}

class AssociativeGrade {

    private String from;
    private String to;
    private String grade;

    public void setFrom(String from) {
        this.from = from;
    }
    public String getFrom() {
        return this.from;
    }
    public void setTo(String to) {
        this.to = to;
    }
    public String getTo() {
        return this.to;
    }
    public void setGrade(String grade) {
        this.grade = grade;
    }
    public String getGrade() {
        return this.grade;
    }
}

class Grade {

    public AssociativeGrade ag;

    public Grade() {
        this.ag = new AssociativeGrade();
        this.ag.setFrom("90");
        this.ag.setTo("100");
        this.ag.setGrade("A");

        Data.Grades.add(this.ag);

        this.ag = new AssociativeGrade();
        this.ag.setFrom("90");
        this.ag.setTo("80");
        this.ag.setGrade("B");

        Data.Grades.add(this.ag);

        this.ag = new AssociativeGrade();
        this.ag.setFrom("70");
        this.ag.setTo("79");
        this.ag.setGrade("C");

        Data.Grades.add(this.ag);

        this.ag = new AssociativeGrade();
        this.ag.setFrom("60");
        this.ag.setTo("69");
        this.ag.setGrade("D");

        Data.Grades.add(this.ag);

        this.ag = new AssociativeGrade();
        this.ag.setFrom("0");
        this.ag.setTo("59");
        this.ag.setGrade("E");

        Data.Grades.add(this.ag);

    }

    public ArrayList<AssociativeGrade> getDataGrades() {
        return Data.Grades;
    }
}

class Student {

    public AssociativeStudent as;

    public void insert(String name, String mark1, String mark2, String mark3, String average, String grade) {
        this.as = new AssociativeStudent();
        this.as.setName(name);
        this.as.setMark1(mark1);
        this.as.setMark2(mark2);
        this.as.setMark3(mark3);
        this.as.setAverage(average);
        this.as.setGrade(grade);

        Data.Students.add(this.as);
    }

    public ArrayList<AssociativeStudent> getStudents() {
        return Data.Students;
    }

    public void showTable() {
        for(int i=0; i< this.getStudents().size(); i++) {
            System.out.print("Nama");
            System.out.print("\tMark");
            System.out.print("\tMark 2");
            System.out.print("\tMark 3");
            System.out.print("\tAverage");
            System.out.print("\tGrade");
            System.out.println();
            System.out.print("" + this.getStudents().get(i).getName());
            System.out.print("\t" + this.getStudents().get(i).getMark1());
            System.out.print("\t" + this.getStudents().get(i).getMark2());
            System.out.print("\t" + this.getStudents().get(i).getMark3());
            System.out.print("\t" + this.getStudents().get(i).getAverage());
            System.out.print("\t" + this.getStudents().get(i).getGrade());
            System.out.println();
        }
    }
}

class Rumus {
    public static String getCalculateAverage(String mark1, String mark2, String mark3) {
        double results = (Integer.parseInt(mark1) + Integer.parseInt(mark2) + Integer.parseInt(mark3));
        double result = results / 3;
        return String.valueOf(result);
    }
    public static String getCalculateGrade(String average) {
        String gr = "Unknown";
        double av = Double.parseDouble(average);

        for(int i=0; i < Data.Grades.size(); i++) {
            int from = Integer.parseInt(Data.Grades.get(i).getFrom());
            int to =  Integer.parseInt(Data.Grades.get(i).getTo());

            if(av >= from && av <= to) {
                // GRADE A-E
                gr = Data.Grades.get(i).getGrade();
            }
        }

        return gr;
    }
}
public class Task3_10 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here

        Grade grade = new Grade();
        Student student = new Student();

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number of students? ");

        int numberOfStudents = sc.nextInt();

        for(int i=1; i  <= numberOfStudents; i++) {
            System.out.println("Enter name and 3 marks for student " + i + "?");

            System.out.print("Name :");
            String name = sc.next();

            System.out.print("Mark 1 :");
            String mark1 = sc.next();

            System.out.print("Mark 2 :");
            String mark2 = sc.next();

            System.out.print("Mark 3 :");
            String mark3 = sc.next();

            String _average = Rumus.getCalculateAverage(mark1, mark2, mark3);
            String _grade = Rumus.getCalculateGrade(_average);

            student.insert(
                    name, mark1, mark2, mark3, _average,_grade
            );
        }

        int choice;
        do {

            System.out.println();
            System.out.println("1: Print the entire list");
            System.out.println("2: Sort and print the list alphabetically");
            System.out.println("3: Sort and print the list in descending order based on the average");
            System.out.println("4: Ask the user to enter an average and search for the student who has that average");
            System.out.println("5: Find the student who has the minimum average");
            System.out.println("6: Print the grade distribution");
            System.out.println("0: Exit");
            System.out.println();
            System.out.print("Enter your choice?");
            choice = sc.nextInt();
            System.out.println();

            switch(choice) {
                case 1:
                    student.showTable();
                break;
                case 2:

                break;
            }
        }while(choice != 0);

        System.out.println("Terima kasih ! ^_^");

    }
}