C#: Find the nth Maximum Grade Point achieved by the students from the list of student

C# Sharp LINQ : Exercise-14 with Solution

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

Sample Solution:

C# Sharp Code:

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

// Define a class named Students
public class Students
{
    // Properties of the Students class: StuName, GrPoint, StuId
    public string StuName { get; set; }
    public int GrPoint { get; set; }
    public int StuId { get; set; }

    // Method to get student records
    public List<Students> GtStuRec()
    {
        // Create a list of Students and add student records to it
        List<Students> stulist = new List<Students>();
        stulist.Add(new Students { StuId = 1, StuName = " Joseph ", GrPoint = 800 });
        // ... (similar lines for other students)
        return stulist; // Return the list of student records
    }
}

// Define a class named LinqExercise14
class LinqExercise14
{
    // Main method, the entry point of the program
    static void Main(string[] args)
    {
        Students e = new Students(); // Create an instance of the Students class

        // Display information about the program
        Console.Write("\nLINQ : Find the nth Maximum Grade Point achieved by the students from the list of student : ");
        Console.Write("\n------------------------------------------------------------------------------------------\n");

        // Ask the user for the rank of the maximum grade point to find
        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(); // Get the list of student records

        // Perform LINQ query to group student records by Grade Point and order them in descending order
        var students = (from stuMast in stulist
                        group stuMast by stuMast.GrPoint into g
                        orderby g.Key descending
                        select new
                        {
                            StuRecord = g.ToList()
                        }).ToList();

        // Display the student record with the specified nth maximum grade point
        students[grPointRank - 1].StuRecord
            .ForEach(i => Console.WriteLine(" Id : {0},  Name : {1},  achieved Grade Point : {2}", i.StuId, i.StuName, i.GrPoint));

        Console.ReadKey(); // Wait for user input before closing the program
    }
}

Sample Output:

LINQ : Find the nth Maximum Grade Point achieved by the students fro
m the list of student :                                             
--------------------------------------------------------------------
----------------------                                              
Which maximum grade point(1st, 2nd, 3rd, ...) you want to find  : 3 
                                                                    
 Id : 7,  Name : David,  achieved Grade Point : 750                 
 Id : 10,  Name : Jenny,  achieved Grade Point : 750 
 

Flowchart:

C# Sharp Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a program in C# Sharp to convert a string array to a string.
Next: Write a program in C# Program to Count File Extensions and Group it using LINQ.