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

void setup() {
  for (int x = 0; x < jumlahPIN; x++)
  {
  pinMode(pinLED[x], OUTPUT);
  }
}

void loop() {
  for (int x = jumlahPIN - 1; x >= 0; x--)
  {
  digitalWrite(pinLED[x], HIGH);
  delay(200);
  digitalWrite(pinLED[x], LOW);
  }

  for (int x = 0; x < jumlahPIN; x++)
  {
  digitalWrite(pinLED[x], HIGH);
  delay(200);
  digitalWrite(pinLED[x], LOW);  
  }
}