const int ledPins[] = {13, 12, 11, 10};
const int numLeds = 4;
const int buttonPin = 2;

int buttonState = 0;        
int lastButtonState = 0;    
int clickCount = 0;        

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

  pinMode(buttonPin, INPUT); 
}

void loop() {

  buttonState = digitalRead(buttonPin);

  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) {
      
      clickCount++;

      if (clickCount > numLeds + 1) { 
        clickCount = 1; 
      }

      updateLeds();
    }

    delay(50);
  }

  lastButtonState = buttonState;
}

void updateLeds() {
  for (int i = 0; i < numLeds; i++) {
    
    if (i < clickCount && clickCount <= numLeds) {
      digitalWrite(ledPins[i], HIGH);
    } else {
      digitalWrite(ledPins[i], LOW);
    }
  }
}