Reverso, recursivo Ejercicio C# - Curso de Programación C# (C Sharp)

// Import the System namespace to use basic classes like Console
using System;

class Program
{
    // Recursive function to reverse a string
    public static string Reverse(string input)
    {
        // Base case: if the string is empty or has one character, return it as is
        if (input.Length <= 1)
        {
            return input;  // Return the string as is (base case)
        }

        // Recursive case: reverse the rest of the string and append the first character
        return Reverse(input.Substring(1)) + input[0];
    }

    // Main method to test the Reverse function
    public static void Main()
    {
        // Declare a string to be reversed
        string original = "Hello";

        // Call the Reverse function and store the reversed string
        string reversed = Reverse(original);

        // Print the reversed string to the console
        Console.WriteLine($"Original: {original}");  // Expected: Hello
        Console.WriteLine($"Reversed: {reversed}");  // Expected: olleH
    }
}