C#: Display top nth records from the list

Last update on December 20 2024 12:51:21 (UTC/GMT +8 hours)

Write a program in C# Sharp to display the top nth records.

Sample Solution:

C# Sharp Code:

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

class LinqExercise11 
{  
    static void Main(string[] args)  
    {  
        // Creating a list of integers named templist and initializing it with some values
        List<int> templist = new List<int>();
        templist.Add(5);
        templist.Add(7);
        templist.Add(13);
        templist.Add(24);
        templist.Add(6);
        templist.Add(9);
        templist.Add(8);
        templist.Add(7);

        // Displaying a message indicating the intention to display top 'n' records from the list
        Console.Write("\nLINQ : Display top nth  records from the list : "); 
        Console.Write("\n----------------------------------------------\n");

        // Displaying the members of the list using a foreach loop
        Console.WriteLine("\nThe members of the list are : ");            
        foreach (var lstnum in templist)  
        {  
            Console.WriteLine(lstnum + " ");  
        }          

        // Asking the user to input the number of records to display
        Console.Write("How many records you want to display ? : ");  
        int n = Convert.ToInt32(Console.ReadLine()); // Accepting 'n' from the user

        // Sorting the templist in ascending order and then reversing it to get descending order
        templist.Sort();
        templist.Reverse();

        // Displaying the top 'n' records from the sorted list using Take method
        Console.Write("The top {0} records from the list are : \n", n);  
        foreach (int topn in templist.Take(n))
        {
            Console.WriteLine(topn);
        }
    }  
}

Sample Output:

----------------------------------------------                                                                
The members of the list are :                                                                                 
5                                                                                                     
7                                                                                                     
13                                                                                                     
24                                                                                                     
6                                                                                                     
9                                                                                                     
8                                                                                                     
7                                                                                                     
How many records you want to display ? : 5                                                                    
The top 5 records from the list are :                                                                         
24                                                                                                     
13                                                                                                     
9                                                                                                     
8                                                                                                     
7  

Visual Presentation:

Flowchart:

C# Sharp Code Editor:

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