const int ledPins[] = {13, 12, 11, 10, 9, 8, 7};  
const int buttonPin = 5;                          

void setup() {
  for (int i = 0; i < 7; i++) pinMode(ledPins[i], OUTPUT);  
  pinMode(buttonPin, INPUT_PULLUP);
}                      

void loop() {
  if (digitalRead(buttonPin) == LOW) {       
    int num = random(1, 7);                  
    clearLeds();                             
    displayNumber(num);                      
    delay(200);  
  }
}

void displayNumber(int number) {
  switch (number) {
    case 1: displayOne(); break;
    case 2: displayTwo(); break;
    case 3: displayThree(); break;
    case 4: displayFour(); break;
    case 5: displayFive(); break;
    case 6: displaySix(); break;
  }
}

void displayOne() {
  digitalWrite(ledPins[3], HIGH); 
}

void displayTwo() {
  digitalWrite(ledPins[0], HIGH);
  digitalWrite(ledPins[4], HIGH);
}

void displayThree() {
  digitalWrite(ledPins[0], HIGH);
  digitalWrite(ledPins[3], HIGH); 
  digitalWrite(ledPins[4], HIGH);
}

void displayFour() {
  digitalWrite(ledPins[0], HIGH);
  digitalWrite(ledPins[2], HIGH);
  digitalWrite(ledPins[4], HIGH);
  digitalWrite(ledPins[6], HIGH);
}

void displayFive() {
  digitalWrite(ledPins[0], HIGH);
  digitalWrite(ledPins[2], HIGH);
  digitalWrite(ledPins[3], HIGH); 
  digitalWrite(ledPins[4], HIGH);
  digitalWrite(ledPins[6], HIGH);
}

void displaySix() {
  digitalWrite(ledPins[0], HIGH);
  digitalWrite(ledPins[1], HIGH);
  digitalWrite(ledPins[2], HIGH);
  digitalWrite(ledPins[4], HIGH);
  digitalWrite(ledPins[5], HIGH);
  digitalWrite(ledPins[6], HIGH);
}


void clearLeds() {
  for (int i = 0; i < 7; i++) {
    digitalWrite(ledPins[i], LOW);
  }
}