int pinLed[]={22,23,24,25,26,27,28,29};
int pinnya= 8;

void setup()
{
  DDRA = B11111111;
}

void loop()
{
  for (int ar = 0; ar < pinnya; ar ++)
  {
    digitalWrite(pinLed[ar], HIGH);
    delay(250);
    digitalWrite(pinLed[ar], LOW);
  }

    for (int ar = 8; ar > 0; ar --)
  {
    digitalWrite(pinLed[ar], HIGH);
    delay(250);
    digitalWrite(pinLed[ar], LOW);
  }

}