C#: Display numbers, number*frequency and the frequency

C# Sharp LINQ : Exercise-7 with Solution

Write a program in C# Sharp to display numbers, multiplication of numbers with frequency and the frequency of a number in an array.

Sample Solution:

C# Sharp Code:

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

class LinqExercise7
{
    static void Main(string[] args)
    {
        // Define an array containing integer numbers
        int[] nums = new int[] { 5, 1, 9, 2, 3, 7, 4, 5, 6, 8, 7, 6, 3, 4, 5, 2 };  

        // Display a message indicating the purpose of the LINQ operation
        Console.Write("\nLINQ : Display numbers, number*frequency and frequency : "); 
        Console.Write("\n-------------------------------------------------------\n");
        Console.Write("The numbers in the array are : \n");
        Console.Write("  5, 1, 9, 2, 3, 7, 4, 5, 6, 8, 7, 6, 3, 4, 5, 2 \n\n");

        // Group the array elements by their values and count occurrences
        var m = from x in nums  
                group x by x into y  
                select y;  

        // Display the headers for the output table
        Console.Write("Number"+"\t"+"Number*Frequency"+"\t"+"Frequency"+"\n");
        Console.Write("------------------------------------------------\n");

        // Display the number, its product with frequency, and frequency
        foreach (var arrEle in m)  
        {  
            Console.WriteLine(arrEle.Key + "\t" + arrEle.Sum() + "\t\t\t" + arrEle.Count());  
        }  
        Console.WriteLine();
    }
}

Sample Output:

LINQ : Display numbers, number*frequency and frequency :                                                      
-------------------------------------------------------                                                       
The numbers in the array are :                                                                                
  5, 1, 9, 2, 3, 7, 4, 5, 6, 8, 7, 6, 3, 4, 5, 2                                                              
  
Number  Number*Frequency        Frequency                                                                     
------------------------------------------------                                                              
5       15                      3                                                                             
1       1                       1                                                                             
9       9                       1                                                                             
2       4                       2                                                                             
3       6                       2                                                                             
7       14                      2                                                                             
4       8                       2                                                                             
6       12                      2                                                                             
8       8                       1

Visual Presentation:

Flowchart:

C# Sharp Code Editor:

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