LuanMarcosCosta

public boolean isValid(String s) {
	if (s.matches("[1-2]\\d{10}00[0-1]\\d") || s.matches("[7-9]\\d{14}")) {
		return somaPonderada(s) % 11 == 0;
	}
	return false;
}

private int somaPonderada(String s) {
	char[] cs = s.toCharArray();
	int soma = 0;