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int public static Operaciones.factorial (int n)
  int factorial = 1;
  if (n < 1) return 0;  //El número debe ser positivo mayor a cero.
  for (int i=1; i <= n ; i++)
    factorial = factorial *1 ;
  return factorial;
}

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factorial (0,1).
fact (N, FactN):-
N>0;
M= N-1;
fact(M,FactM ),
FactN = N * FactM.

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dobleFactorial :: Integer -> Integer
dobleFactorial 0 = 1
dobleFactorial 1 = 1
dobleFactorial n = n * dobleFactorial (n-2)

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int factorial (int n) {
  if (n < 0) return 0; 
  else if(n > 1) return n*factorial(n-1);
  return 1;
}

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void Server::on_client_fileSend(QString uname,QString filename,QByteArray dataOfFile){

    ClientThread* client = (ClientThread*)sender();
    QString currentTime = QTime::currentTime().toString("H:mm A/");
    QString command = "/fileAll:"+currentTime + uname + " : " + filename + "\n";

    QString filePath;
    //Si no esta la carpeta creada, la crea.
    if(!QDir("Documentos_Servidor").exists()){
        qDebug() << "No esta creada la carpeta";

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void Server::sendDataFileToAll(QString text,QByteArray dataOfFile,ClientThread* except){
    QByteArray block;
    QDataStream out(&block,QIODevice::WriteOnly);
    out.setVersion(QDataStream::Qt_5_8);

    out << (quint32)0 << text;
    block.append(dataOfFile);

    out.device()->seek(0);
    out << (quint32)(block.size() - sizeof(quint32));

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void Dialog::on_pushButton_ChooseFile_clicked()
{
    //configurar el directorio de inicio a la ruta de inicio del usuario
    QString homePath = QDir::homePath();
    //Abre el dialogo y escoge el archivo. Obtenemos el path del archivo.
    QString filePath = QFileDialog::getOpenFileName(this,tr("Open a file"),
                      homePath,tr("All files (*.*)"),NULL,QFileDialog::DontResolveSymlinks);
    
  //Se obtiene el nombre del archivo
    QString filename = filePath.section("/",-1);

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//match con la expresión de chat privado
match = regex_private.match(data);
if(match.hasMatch()){
    QString senderName = match.captured(2);
    QString time = match.captured(1);
    QString text = match.captured(3);
    //Si la ventana ya esta abierta solo agrega
    if(!privateChatList.contains(senderName)){
      privateChatList[senderName] = new PrivateDialog(this->username,senderName,this);
      connect(privateChatList[senderName],SIGNAL(finished(int)),this,SLOT(privateFinished(int)));

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match = regex_text.match(data);
    if(match.hasMatch()){
        //update chat display
        ui->textEdit_ChatDisplay->append(tr("<b>%1 <font color = \"LightGrey\">[%2]</font>: </b> %3")
                                         .arg(match.captured(2),match.captured(1),match.captured(3)));
    }

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void Server::sendTextToOne(QString text,ClientThread* target){
    QByteArray block;
    QDataStream out(&block,QIODevice::WriteOnly);
    out.setVersion(QDataStream::Qt_5_8);

    out << (quint32)0 << text;

    out.device()->seek(0);
    out << (quint32)(block.size() - sizeof(quint32));
    qDebug() << "block.size() = " << block.size();