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Lección

POO Más sobre Clases

Ejercicio

Objetivo

Cree una clase "Encrypter" para cifrar y descifrar texto.

Tendrá un método "Encrypt", que recibirá una cadena y devolverá otra cadena. Será un método estático, por lo que no necesitamos crear ningún objeto de tipo "Encrypter".

También habrá un método "Descifrar".

En este primer enfoque, el método de cifrado será muy sencillo: para cifrar añadiremos 1 a cada carácter, de forma que "Hello" se convertiría en "Ipmb", y para descifrar restaríamos 1 a cada carácter.

Un ejemplo de uso podría ser

string newText = Encrypter.Encrypt("Hola");

Código de Ejemplo

// Importing the System namespace which contains basic system functionalities like Console for input/output
using System;

public class Encrypter
{
    // Static method to encrypt the input text
    public static string Encrypt(string input)
    {
        // Variable to store the encrypted text
        string encryptedText = "";

// Loop through each character of the input text
        foreach (char c in input)
        {
            // Convert the character to its ASCII value and add 1 to it
            encryptedText += (char)(c + 1);
        }

// Return the encrypted text
        return encryptedText;
    }

// Static method to decrypt the input text
    public static string Decrypt(string input)
    {
        // Variable to store the decrypted text
        string decryptedText = "";

// Loop through each character of the input text
        foreach (char c in input)
        {
            // Convert the character to its ASCII value and subtract 1 from it
            decryptedText += (char)(c - 1);
        }

// Return the decrypted text
        return decryptedText;
    }

// Main method to test the encryption and decryption
    public static void Main()
    {
        // Original text to encrypt
        string originalText = "Hola";

// Encrypt the text
        string encryptedText = Encrypt(originalText);
        Console.WriteLine($"Encrypted text: {encryptedText}");

// Decrypt the text
        string decryptedText = Decrypt(encryptedText);
        Console.WriteLine($"Decrypted text: {decryptedText}");
    }
}

// Importing the System namespace which contains basic system functionalities like Console for input/output
using System;

public class Encrypter
{
    // Static method to encrypt the input text
    public static string Encrypt(string input)
    {
        // Variable to store the encrypted text
        string encryptedText = "";

        // Loop through each character of the input text
        foreach (char c in input)
        {
            // Convert the character to its ASCII value and add 1 to it
            encryptedText += (char)(c + 1);
        }

        // Return the encrypted text
        return encryptedText;
    }

    // Static method to decrypt the input text
    public static string Decrypt(string input)
    {
        // Variable to store the decrypted text
        string decryptedText = "";

        // Loop through each character of the input text
        foreach (char c in input)
        {
            // Convert the character to its ASCII value and subtract 1 from it
            decryptedText += (char)(c - 1);
        }

        // Return the decrypted text
        return decryptedText;
    }

    // Main method to test the encryption and decryption
    public static void Main()
    {
        // Original text to encrypt
        string originalText = "Hola";

        // Encrypt the text
        string encryptedText = Encrypt(originalText);
        Console.WriteLine($"Encrypted text: {encryptedText}");

        // Decrypt the text
        string decryptedText = Decrypt(encryptedText);
        Console.WriteLine($"Decrypted text: {decryptedText}");
    }
}