Random Building Lights Controller

// Random Building Lights
const int NUM_LIGHTS = 8;
const int lightPins[] = {2, 3, 4, 5, 6, 7, 8, 9};

void setup() {
  for (int i = 0; i < NUM_LIGHTS; i++) {
    pinMode(lightPins[i], OUTPUT);
  }
  randomSeed(analogRead(0));
}

void loop() {
  int light = random(NUM_LIGHTS);
  digitalWrite(lightPins[light], !digitalRead(lightPins[light]));
  delay(random(2000, 10000)); // 2-10 second intervals
}