using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

public class Students
{
    public string StuName { get; set; }
    public int GrPoint { get; set; }
    public int StuId { get; set; }

    public List<Students> GtStuRec()
    {
        List<Students> stulist = new List<Students>();
        stulist.Add(new Students { StuId = 1, StuName = " Joseph ", GrPoint = 800 });
        stulist.Add(new Students { StuId = 2, StuName = "Alex", GrPoint = 458 });
        stulist.Add(new Students { StuId = 3, StuName = "Harris", GrPoint = 900 });
        stulist.Add(new Students { StuId = 4, StuName = "Taylor", GrPoint = 900 });
        stulist.Add(new Students { StuId = 5, StuName = "Smith", GrPoint = 458 });
        stulist.Add(new Students { StuId = 6, StuName = "Natasa", GrPoint = 700 });
        stulist.Add(new Students { StuId = 7, StuName = "David", GrPoint = 750 });
        stulist.Add(new Students { StuId = 8, StuName = "Harry", GrPoint = 700 });
        stulist.Add(new Students { StuId = 9, StuName = "Nicolash", GrPoint = 597 });
        stulist.Add(new Students { StuId = 10, StuName = "Jenny", GrPoint = 750 });
        return stulist;
    }
}
class LinqExercise14
{
    static void Main(string[] args)
    {
        Students e= new Students();
        Console.Write("\nLINQ : Find the nth Maximum Grade Point achieved by the students from the list of student : ");
        Console.Write("\n------------------------------------------------------------------------------------------\n");
        Console.Write("Which maximum grade point(1st, 2nd, 3rd, ...) you want to find  : ");
        int grPointRank = Convert.ToInt32(Console.ReadLine());
        Console.Write("\n");
        var stulist = e.GtStuRec();
        var students = (from stuMast in stulist
                        group stuMast by stuMast.GrPoint into g
                        orderby g.Key descending
                        select new
        {
            StuRecord = g.ToList()
        }).ToList();
        students[grPointRank - 1].StuRecord
        .ForEach(i => Console.WriteLine(" Id : {0},  Name : {1},  achieved Grade Point : {2}",i.StuId, i.StuName, i.GrPoint));
        Console.ReadKey();
    }
}