int baseLed = 2;
int numLed = 6;
int bPin=10;

void setup() {
  // put your setup code here, to run once:
  for(int i=0; i<numLed; i++){
    pinMode(baseLed+i,OUTPUT);
    digitalWrite(baseLed+i,LOW);
  }
    pinMode(bPin,INPUT);
}

void cycle(int delayTime){
  for(int i=0; i<numLed; i++){
    digitalWrite(baseLed+i,HIGH);
    delay(delayTime);
    digitalWrite(baseLed+i,LOW);
}
}



void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(bPin)==HIGH){
    cycle(100);
  }else{
   cycle(500);
  }

}