using System;

using System.Collections.Generic;

​

public class StudentRecord : IComparable<StudentRecord> 

{

    public string name;

    List<string> course = new List<string>();

    List<string> grade = new List<string>();

    public double gpa;

    string code;

    public StudentRecord(string n, List<string> co, List<string> gr)

    {

        name = n;

        course = co;

        grade = gr;

        CalculateGPA();

    }

    public double CalculateGPA()

    {

        double sum=0;

        double a=4.0,b=3.3,c=2.7,f=0.0;

        for (int i = 0; i < course.Count; i++)

        {

            if (grade[i] == "A")

                sum = sum + a;

            else if (grade[i] == "B")

                sum = sum + b;

            else if (grade[i] == "C")

                sum = sum + c;

            else if (grade[i] == "F")

                sum = sum + f;

        }

        return gpa = (sum / course.Count);

    }

    public int CompareTo(StudentRecord r)

    {

        if (gpa < r.gpa) return 1;

        else if (gpa == r.gpa) return 0;

        else return -1;

    }

}

public class Program

{

    public static void Main()

    {

        List<StudentRecord> x = new List<StudentRecord>();

        List<string> jc = new List<string>();

        List<string> jg = new List<string>();

        List<string> mc = new List<string>();

        List<string> mg = new List<string>();

        List<string> joc = new List<string>();

        List<string> jog = new List<string>();

        List<string> sc = new List<string>();

        List<string> sg = new List<string>();

        jc.Add("IERG3080");

        jc.Add("IERG3300");

        jg.Add("B");

        jg.Add("A");

        mc.Add("IERG3080");

        mc.Add("IERG3300");

        mc.Add("GEEC1000");

        mg.Add("A");

        mg.Add("A");

        mg.Add("B");

        joc.Add("IERG3080");

        joc.Add("IERG3300");

        joc.Add("ACAT1001");

        jog.Add("C");

        jog.Add("B");

        jog.Add("C");

        sc.Add("CSCI2100");

        sc.Add("IERG2051");

        sg.Add("C");

        sg.Add("F");

        x.Add(new StudentRecord("John",jc,jg));

        x.Add(new StudentRecord("Mary",mc,mg));

        x.Add(new StudentRecord("Joe",joc,jog));

        x.Add(new StudentRecord("Susie",sc,sg));

        x.Sort();

        int i = x.Count - 1;

        foreach (StudentRecord y in x){

            Console.Write(y.name);

            if (i > 0)

            {

                Console.Write(" > ");

                i--;

            }

        }

    }

}