const int numLED = 8;
const int pinLED[numLED] = {9,8,7,6,5,4,3,2};
void setup()
{
  for(int i=0; i<8; i++)
  {
    pinMode(pinLED[i], OUTPUT);
  }
}
void loop()
{
  //Lampu kedip ke kanan
  for(int i=0; i<8; i++)
  {
    digitalWrite(pinLED[i], HIGH);
    delay(500);
    digitalWrite(pinLED[i], LOW);
    delay(500);
  }

  //Marque
  for(int i=0; i<8; i++)
  {
    digitalWrite(pinLED[i], HIGH);
    digitalWrite(pinLED[i+2], HIGH);
    delay(500);
    digitalWrite(pinLED[i], LOW);
    digitalWrite(pinLED[i+2], LOW);
  }

  //Lampu kanan-kiri
  for(int i = 0; i <=8; i++)
  {
    digitalWrite(pinLED[i],HIGH);
    delay(500);
  }
  for(int i = 8; i >= 0; i--)
  {
    digitalWrite(pinLED[i],LOW);
    delay(500);
  }

  //Random Led
  int i = random(8);
  {
    digitalWrite(pinLED[i],HIGH);
    delay(500);
    digitalWrite(pinLED[i],LOW);
  }
}