#3-Javascript

Author: CaveroBrandon

Roadmap/03 - ESTRUCTURAS DE DATOS/javascript/CaveroBrandon.js

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+// const { get } = require('http');
+const readline = require('readline');
+
+/*
+EJERCICIO:
+- Muestra ejemplos de creación de todas las estructuras soportadas por defecto en tu lenguaje.
+- Utiliza operaciones de inserción, borrado, actualización y ordenación.
+*/
+// --- List ---
+// Population, update operations
+let fruitsList = ['Banana', 'Apple'];   // Creating an array
+fruitsList[0] = 'Orange';               // Modifying an element based on its position
+fruitsList.push('Banana');              // Adding an element to the end
+fruitsList.unshift('Banana');           // Adding an element to the beginning
+fruitsList.splice(1, 0, 'Strawberry')   // Adding an element on an specific position
+fruitsList.splice(4, 1, 'Pear')         // Replacing an element on an specific position
+fruitsList.splice(0, 0, 'Grapes', 'Watermelon') // Adding more than one element starting on an specific position
+let groceryList = new Array();          // Creating an array
+groceryList = fruitsList.concat(['Tomato', 'Pepper'])   // Adding another array to the first array
+
+// Removing operations
+groceryList = groceryList.slice(0,3);   // Slicing the array
+groceryList.pop();                      // Removing the last element
+groceryList.shift();                    // Removing the first element
+groceryList.splice(1, 1);               // Removing an element of an specific position
+groceryList.reverse();                  // Reversing the array
+
+// Sorting operation
+let numberList = [10, 2, 3, 5, 73];
+numberList.sort((a, b) => a - b);       // Sorting the array ascending order
+numberList.sort((a, b) => b - a);       // Sorting the array descending order
+
+// --- Maps ---
+const phoneCharacteristics = new Map();         // Creating a map
+phoneCharacteristics.set('Battery', '100');     // Adding an element to the map
+phoneCharacteristics.set('Portability', true);  // Adding an element to the map
+phoneCharacteristics.set('Wireless', false);    // Adding an element to the map
+phoneCharacteristics.set('PhoneNumber', 12321)  // Adding an element to the map
+phoneCharacteristics.delete('Battery');         // Remove an element using it's key
+let phonePortability = phoneCharacteristics.get('Portability'); // Get an element vßalue using it's key
+
+// --- Set ---
+const user = new Set(); // Creating a set
+user.add('name');       // Adding an element to the set
+user.add('age');        // Adding an element to the set
+user.add('weight');     // Adding an element to the set
+user.delete('weight');  // Removing an element of the set
+user.clear();           // Clear all the set
+
+
+// --- Objects ---
+let newCar = {color: 'red', hasWindows: true, year: 2025};  // Creating an object
+newCar.electric = false;    // Adding a new element to the object
+newCar.color = 'Blue';      // Updating a value based on a key
+delete newCar.hasWindows;   // Removing an element
+isColorKeyAvailable = 'color' in newCar // Verifying that an object has a value
+
+/*
+DIFICULTAD EXTRA (opcional):
+Crea una agenda de contactos por terminal.
+- Debes implementar funcionalidades de búsqueda, inserción, actualización y eliminación de contactos.
+- Cada contacto debe tener un nombre y un número de teléfono.
+- El programa solicita en primer lugar cuál es la operación que se quiere realizar, y a continuación
+los datos necesarios para llevarla a cabo.
+- El programa no puede dejar introducir números de teléfono no númericos y con más de 11 dígitos.
+(o el número de dígitos que quieras)
+- También se debe proponer una operación de finalización del programa.
+*/
+let agenda = [];
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+});
+
+function getUserInput(questionText) {
+    return new Promise((resolve) => {
+        rl.question(questionText, (ans) => {
+            resolve(ans);
+        });
+    });
+}
+
+async function registerContact() {
+    let contact = {};
+    const contactName = await getUserInput('Enter the contact name: ');
+    const contactPhoneNumber = await getUserInput('Enter contact phone number: ');
+    if (isNaN(contact.phoneNumber) || contact.phoneNumber.toString().split('').length > 11) {
+        console.log('The entered value must be a number with less than 11 digits');
+        showMenu();
+    }
+    else {
+        contact = {name: contactName, phoneNumber: contactPhoneNumber};
+        agenda.push(contact);
+        console.log('---------------------------------');
+        console.log('New entry registered successfully');
+        console.log('Contact name: ' + contact.name);
+        console.log('Contact phone number: ' + contact.phoneNumber);
+        console.log('---------------------------------');
+        showMenu();
+    }
+}
+
+async function updateContact(nameToSearch) {
+    const contact = agenda.find(contact => contact.name === nameToSearch);
+    if (contact) {
+        contact.phoneNumber = await getUserInput('Enter new phone number: ');
+        if (isNaN(contact.phoneNumber) || contact.phoneNumber.toString().split('').length > 11) {
+            console.log('The entered value must be a number with less than 11 digits');
+            showMenu();
+        }
+        else {
+            console.log('---------------------------------');
+            console.log('New phone number registered successfully');
+            console.log('Contact name: ' + contact.name);
+            console.log('Contact phone number: ' + contact.phoneNumber);
+            console.log('---------------------------------');
+            showMenu();
+        }
+    }
+    else {
+        contactNotFoundMessage();
+    }
+}
+
+async function removeContact(nameToSearch) {
+    const contact = agenda.find(contact => contact.name === nameToSearch);
+    if (contact) {
+        console.log('---------------------------------');
+        console.log('The contact was succesfully removed from the agenda');
+        console.log('Contact name: ' + contact.name);
+        console.log('Contact phone number: ' + contact.phoneNumber);
+        const index = agenda.indexOf(contact);
+        agenda.splice(index, 1);
+        console.log('---------------------------------');
+        showMenu();
+    }
+    else {
+        contactNotFoundMessage();
+    }
+}
+
+async function getPhoneNumberByName(nameToSearch) {
+    // Find the contact with the matching name in the global 'agenda' list
+    const contact = agenda.find(contact => contact.name === nameToSearch);
+    if (contact) {
+        console.log('---------------------------------');
+        console.log('Contact "' + nameToSearch + '" found in the agenda');
+        console.log(nameToSearch + ': ' + contact.phoneNumber);
+        console.log('---------------------------------');
+        showMenu()
+    }
+    else {
+        contactNotFoundMessage();
+    }
+}
+
+function isAgendaEmpty() {
+    if (agenda.length === 0) {
+        console.log('---------------------------------');
+        console.log('Agenda is empty, try adding some contacts first');
+        console.log('---------------------------------');
+        showMenu();
+    }
+}
+
+function contactNotFoundMessage() {
+    console.log('---------------------------------');
+    console.log('The contact was not found in the agenda');
+    console.log('---------------------------------');
+    showMenu();
+}
+
+async function showMenu() {
+    console.log('Select an option');
+    console.log('1. Register a new contact (Insert)');
+    console.log('2. Update an existing contact');
+    console.log('3. Remove an existing contact');
+    console.log('4. Search a contact')
+    console.log('5. Exit');
+    const option = await getUserInput('Select your option (1-5): ');
+    switch (option) {
+        case '1':
+            registerContact();
+            break;
+        case '2':
+            isAgendaEmpty();
+            const nameToUpdate = await getUserInput('Enter the contact name to update: ');
+            updateContact(nameToUpdate);    
+            break;
+        case '3':
+            isAgendaEmpty();
+            const nameToRemove = await getUserInput('Enter the contact name to remove: ');
+            removeContact(nameToRemove);
+            break;
+        case '4':
+            isAgendaEmpty();
+            const nameToSearch = await getUserInput('Enter the contact name to search: ');
+            getPhoneNumberByName(nameToSearch);
+            break;
+        case '5':
+            process.exit(0);
+        default:
+            console.log('---------------------------------');
+            console.log('Invalid option. Please select a valid option (1-5)');
+            console.log('---------------------------------');
+            showMenu();
+    }
+}
+
+showMenu();