const int ledPins[] = {3, 5, 6, 9, 10, 11};
const int numLeds = sizeof(ledPins) / sizeof(ledPins[0]);

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

void loop() {
  // Randomly select the number of LEDs to light up
  int numLedsToLight = random(1, numLeds + 1);

  // Randomly select the order and direction of LEDs
  bool ledOrder[numLeds];
  for (int i = 0; i < numLeds; i++) {
    ledOrder[i] = random(2) == 0; // Randomly set LED order and direction
  }

  // Light up random LEDs with varying intensity and duration
  for (int i = 0; i < numLeds; i++) {
    int ledIndex = ledOrder[i] ? i : numLeds - 1 - i;
    int intensity = random(150, 256); // Random intensity between 150 and 255
    analogWrite(ledPins[ledIndex], intensity);
    delay(random(20, 100)); // Random delay between 20 and 100 milliseconds
    analogWrite(ledPins[ledIndex], 0); // Turn off the LED
  }

  // Random delay before the next iteration
  delay(random(50, 200)); // Random delay between 50 and 200 milliseconds
}