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| 1 | +import java.util.*; |
| 2 | +import java.util.regex.Matcher; |
| 3 | +import java.util.regex.Pattern; |
| 4 | + |
| 5 | +public class Main { |
| 6 | + public static void main(String[] args) { |
| 7 | + var numbers = findNumbers("Hay más de -2 y menos de 10 números aquí, o quizás solo hay 1."); |
| 8 | + var email = validateEmail( "[email protected]"); |
| 9 | + var phone = validatePhoneNumber("123-456-7890"); |
| 10 | + var url = validateUrl("https://www.google.com"); |
| 11 | + } |
| 12 | + |
| 13 | + /** |
| 14 | + * Utilizando tu lenguaje, explora el concepto de expresiones regulares, |
| 15 | + * creando una que sea capaz de encontrar y extraer todos los números |
| 16 | + * de un texto. |
| 17 | + */ |
| 18 | + static List<String> findNumbers(String str) { |
| 19 | + List<String> numbers = new LinkedList<>(); |
| 20 | + Pattern p = Pattern.compile("-?\\d+"); |
| 21 | + Matcher m = p.matcher(str); |
| 22 | + |
| 23 | + while (m.find()) numbers.add(m.group()); |
| 24 | + |
| 25 | + return numbers; |
| 26 | + } |
| 27 | + |
| 28 | + /** |
| 29 | + * Valida un correo electrónico. |
| 30 | + * @param email |
| 31 | + * @return |
| 32 | + */ |
| 33 | + static boolean validateEmail(String email) { |
| 34 | + Pattern p = Pattern.compile("^(?=.{1,64}@)[A-Za-z0-9_-]+(\\.[A-Za-z0-9_-]+)*@[^-][A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,})$"); |
| 35 | + Matcher m = p.matcher(email); |
| 36 | + return m.matches(); |
| 37 | + } |
| 38 | + |
| 39 | + /** |
| 40 | + * Valida un número de teléfono. |
| 41 | + * @param phone |
| 42 | + * @return |
| 43 | + */ |
| 44 | + static boolean validatePhoneNumber(String phone) { |
| 45 | + Pattern p = Pattern.compile("\\d{10}|(?:\\d{3}-){2}\\d{4}|\\(\\d{3}\\)\\d{3}-?\\d{4}"); |
| 46 | + Matcher m = p.matcher(phone); |
| 47 | + return m.matches(); |
| 48 | + } |
| 49 | + |
| 50 | + /** |
| 51 | + * Valida una URL. |
| 52 | + * @param url |
| 53 | + * @return |
| 54 | + */ |
| 55 | + static boolean validateUrl(String url) { |
| 56 | + Pattern p = Pattern.compile("^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]"); |
| 57 | + Matcher m = p.matcher(url); |
| 58 | + return m .matches(); |
| 59 | + } |
| 60 | + |
| 61 | +} |
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