Write a program in C# Sharp to find the n-th Maximum grade point achieved by the students from the list of students

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();  
        }  
    }