int pins[] = {1,2,3,4,5,6,7,8,9,10};

int totalLED = sizeof(pins) / sizeof(int);
int repYouWant = 20;

void setup() {

  // Setup pin
  for(int i = 0; i < totalLED; i++){
    pinMode(pins[i], OUTPUT);
  }

  // Jalankan Program
  for(int rep = 0; rep < repYouWant; rep++){
    int pointerLED;

    if(rep % 2 == 0){ // Kalau iterasi genap == lampu merah
      pointerLED = 0;
    } else { // Kalau iterasi ganjil == lampu warna-warni
      pointerLED = 1;
    }

    for(int led = 0; led < totalLED; led++){
      if(led == pointerLED){
        digitalWrite(pins[led], HIGH);
        pointerLED += 2;
      } else {
        digitalWrite(pins[led], LOW);
      }
    }

    delay(1000);
  }

}

void loop() {
  // put your main code here, to run repeatedly:

}