C#: Read n number of values in an array and display it in reverse order

Last update on December 20 2024 12:36:32 (UTC/GMT +8 hours)

Write a C# Sharp program to read n values in an array and display them in reverse order.

Sample Solution:-

C# Sharp Code:

using System;  // Importing necessary namespace

public class Exercise2  // Declaration of the Exercise2 class
{  
    public static void Main()  // Main method, entry point of the program
    {
        int i, n;  // Declaration of variables 'i' and 'n'
        int[] a = new int[100];  // Declaration of an integer array 'a' with size 100

        // Display a message about reading n number of values in an array and displaying it in reverse order
        Console.Write("\n\nRead n number of values in an array and display it in reverse order:\n");
        Console.Write("------------------------------------------------------------------------\n");

        Console.Write("Input the number of elements to store in the array: ");  // Prompt the user to input the number of elements
        n = Convert.ToInt32(Console.ReadLine());  // Read the number of elements from the user and store it in 'n'

        Console.Write("Input {0} number of elements in the array:\n", n);  // Prompt the user to input 'n' elements

        // Loop to read 'n' elements from the user and store them in the array 'a'
        for (i = 0; i < n; i++)
        {
            Console.Write("element - {0} : ", i);  // Prompt for input element number
            a[i] = Convert.ToInt32(Console.ReadLine());  // Read user input and store it in the array 'a'
        }

        Console.Write("\nThe values stored into the array are:\n");

        // Loop to display the elements stored in the array 'a'
        for (i = 0; i < n; i++)
        {
            Console.Write("{0}  ", a[i]);  // Display each element of the array 'a'
        }

        Console.Write("\n\nThe values stored into the array in reverse are:\n");

        // Loop to display the elements stored in the array 'a' in reverse order
        for (i = n - 1; i >= 0; i--)
        {
            Console.Write("{0} ", a[i]);  // Display each element of the array 'a' in reverse order
        }

        Console.Write("\n\n");  // Move to the next line for better readability
    } 
}

Sample Output:

Read n number of values in an array and display it in reverse order:                                          
------------------------------------------------------------------------                                      
Input the number of elements to store in the array :3                                                         
Input 3 number of elements in the array :                                                                     
element - 0 : 1                                                                                               
element - 1 : 2                                                                                               
element - 2 : 3                                                                                               

The values store into the array are :                                                                         
1  2  3                                                                                                       
The values store into the array in reverse are :                                                              
3 2 1 

Flowchart:

C# Sharp Code Editor:

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