// LED Pins
const int ledPins[] = {5, 6, 7};

// Button Pins
const int forwardButton = 3;
const int backwardButton = 4;

void setup() {
  for (int i = 0; i < 3; i++) {
    pinMode(ledPins[i], OUTPUT);
  }

  pinMode(forwardButton, INPUT_PULLUP);
  pinMode(backwardButton, INPUT_PULLUP);
}

void loop() {
  bool forwardPressed = digitalRead(forwardButton) == LOW;
  bool backwardPressed = digitalRead(backwardButton) == LOW;

  if (forwardPressed) {
    forwardSequence();
  } else if (backwardPressed) {
    backwardSequence();
  }
}


void forwardSequence() {
  for (int i = 0; i < 3; i++) {
    digitalWrite(ledPins[i], HIGH);
    delay(300);
    digitalWrite(ledPins[i], LOW);
  }
}

void backwardSequence() {
  for (int i = 2; i >= 0; i--) {
    digitalWrite(ledPins[i], HIGH);
    delay(300);
    digitalWrite(ledPins[i], LOW);
  }
}