int ledPins[] = {2,3,4,5};

byte button_input = 6;

void setup() {

  for (int i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
  }

  pinMode(button_input, INPUT_PULLUP);

  Serial.begin(9600);
}

void loop() {

  bool button = digitalRead(button_input);
  
if (!button) {
  for (byte i = 0; i < 4; i++) {
    Serial.print("Pins auf High: ");
    digitalWrite(ledPins[i], HIGH);
    Serial.print(ledPins[i]);
    Serial.println(" HIGH");
    delay(1000);

    button = digitalRead(button_input);
    if (button) {
      return;
    }
  }
}

if (button) {
  for (byte i = 3; i >= 0; i--) {
    Serial.print("Pins auf LOW: ");
    digitalWrite(ledPins[i], LOW);
    Serial.print(ledPins[i]);
    Serial.println(" LOW");
    delay(1000);

    button = digitalRead(button_input);
    if (!button) {
      return;
    }

  }
}



}