NoSwitch Code

//COMMENTS ARE OPTIONAL

int i;  //Counting Variable
int t;  //time delay

void setup(){    //Run before LOOP
  for(i = 2; i < 12; i++){
    //CODE IN LOOP HERE
    pinMode(i, OUTPUT);
  }
  t = 100;
}

void loop(){  //MAIN FUNCTION
  oneTime();
}

//Make My Own Function

void somethingElse(){
  for(i = 2; i < 12; i++){
    digitalWrite(i, HIGH);
    delay(t);
  }
  //ADD CODE THAT TURNS THEM OFF ONE BY ONE
  for(i = 2; i < 12; i++){
    digitalWrite(i, LOW);
    delay(t);
  }
}

void oneTime(){
  for(i = 2; i < 12; i++){
    digitalWrite(i, HIGH);
    delay(t);
    digitalWrite(i, LOW);
  }
  for(i = 12; i > 1; i--){
    digitalWrite(i, HIGH);
    delay(t);
    digitalWrite(i, LOW);
  }
}


void allOn(){
  for(i = 2; i < 12; i++){
    digitalWrite(i, HIGH);
  }
}