//void OneAfterAnotherLoop() {
  for(int i = 0; i <= 7; i++) {
    digitalWrite(ledpins[i], HIGH);
    delay(100);
  }
  for(int i = 0; i <= 7; i++) {
    digitalWrite(ledpins[i], LOW);
    delay(100);
  }
}



//void Pingpong() {
  for (int i = 0; i <= 7; i++) {
    digitalWrite(ledpins[i], HIGH);
    delay(100);
    digitalWrite(ledpins[i], LOW);
  }
  for (int i = 6; i >= 1; i--) { // skip ends to avoid duplicate blink
    digitalWrite(ledpins[i], HIGH);
    delay(100);
    digitalWrite(ledpins[i], LOW);
  }
}


//  Marquee effect (like running lights)
void Marque() {
  for (int i = 0; i <= 7; i++) {
    digitalWrite(ledpins[i], HIGH);
    delay(100);
    digitalWrite(ledpins[i], LOW);
  }
}

//  Random LED blinking
void RandomLED() {
  int index = random(0, 8); // random index from 0 to 7
  digitalWrite(ledpins[index], HIGH);
  delay(100);
  digitalWrite(ledpins[index], LOW);
  delay(100);
}