int timedelay=100;
void setup() {
  for(int i=3; i<=12; i++){
    pinMode(i, OUTPUT);
  }
  pinMode(13, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(13)==HIGH)
  {
    for(int i=0; i<=5; i++){
      pat1();
    }
  }
  if(digitalRead(13)==LOW){
    for(int i=0; i<=5; i++){
    pat2();
    }
  }
}

  void pat1()
  {
    for(int i=3; i<13; i++)
    {
      digitalWrite(i, HIGH);
      delay(timedelay);
      digitalWrite(i, LOW);
    }
    for(int i=12; i<=3; i--)
    {
      digitalWrite(i, HIGH);
      delay(timedelay);
      digitalWrite(i, LOW);
    }
  }


void pat2()
  {
    for(int i=3; i<=12; i=i+2)
    {
      digitalWrite(i, HIGH);
      delay(timedelay);
      digitalWrite(i, LOW);
    }
    for(int i=12; i>=3; i=i-2)
    {
      digitalWrite(i, HIGH);
      delay(timedelay);
      digitalWrite(i, LOW);
    }
  }