const int ledPins[] = {18,5,17,16,4,0,2,15,12,14};
const int numLeds = sizeof(ledPins) / sizeof(ledPins[0]);


void setup() {
  // Initialize all pins as outputs
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  // Light up LEDs one by one
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], HIGH);
    delay(200); // Wait for 200 milliseconds
  }

  // Turn off LEDs one by one
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], LOW);
    delay(200); // Wait for 200 milliseconds
  }
}