void setup() {
  // put your setup code here, to run once:
  int i;
  for (i=8;i<=13;i++) {
    pinMode(i, OUTPUT);
  }

  pinMode(2, INPUT);
  pinMode(3, INPUT);
}

void blink(int pin) {
  digitalWrite(pin, HIGH);
  delay(100);
  digitalWrite(pin, LOW);
}

int savedInput = 0;
void pressCheck() {
  if (digitalRead(2) == HIGH) {
    savedInput = 1;
  }
  if (digitalRead(3) == HIGH) {
    savedInput = 0;
  }
}
void loop() {
  // put your main code here, to run repeatedly:

  pressCheck();
  int i;
  if (savedInput == 1) {
    // left to righth
    for (i=13;i>=8;i--) {
      blink(i);
      pressCheck();
      if (savedInput != 1) {
        // o crap switch
        break;
      }
    }
  } else {
    // right t oleft
    for (i=8;i<=13;i++) {
      blink(i);
      pressCheck();
      if (savedInput != 0) {
        // o crap switch
        break;
      }
    }
  }
}