int led[5] = {25, 26, 27, 14, 12};
int delayTime = 150;
int putaran = 0;

void setup() {
  for (int i = 0; i < 5; i++) {
    pinMode(led[i], OUTPUT);
  }
}

void matiSemua() {
  for (int i = 0; i < 5; i++) {
    digitalWrite(led[i], LOW);
  }
}

void nyalaSatu(int index) {
  matiSemua();
  digitalWrite(led[index], HIGH);
  delay(delayTime);
}

void loop() {
  
  for (int i = 0; i < 5; i++) {
    nyalaSatu(i);
  }


  for (int i = 4; i >= 0; i--) {
    nyalaSatu(i);
  }

  putaran++;

  if (putaran == 3) {
 
    matiSemua();
    for (int i = 0; i < 5; i++) {
      digitalWrite(led[i], HIGH);
      delay(delayTime);
    }


    for (int i = 0; i < 5; i++) {
      digitalWrite(led[i], LOW);
      delay(delayTime);
    }

    putaran = 0;
  }
}