const int switchPin = 8;
unsigned long previousTime = 0;
int switchState = 0;
int prevSwitchState = 0;
int led = 2;
long interval = 1000;
void setup() {
 for(int x = 2;x<8;x++){
  pinMode(x, OUTPUT);
 }
pinMode(switchPin, INPUT);
}
void loop(){
  unsigned long currentTime = millis();
  if(currentTime -previousTime > interval) {
    previousTime = currentTime;
    digitalWrite(led, HIGH);
    led++;
    if(led == 7){
  }
}
switchState = digitalRead(switchPin);
if(switchState != prevSwitchState){
  for(int x = 2;x<8;x++){
  digitalWrite(x, LOW);
  }
  led = 2;
  previousTime = currentTime;
}
  prevSwitchState = switchState;
}