int analog = A0;

int pocet = 10;

int ledPins[] ={
  10,9,8,7,6,5,4,3,2,11
} ;

void setup() {
  for(int LED = 0; LED < pocet; LED++){
  pinMode(ledPins[LED],OUTPUT);
  }
  Serial.begin(9600);
}

void loop() {
  int senzor=analogRead(analog);
  int level = map(senzor,0,1023,0,10);
  Serial.println(level);
  for(int LED = 0; LED < pocet; LED++){
    if(LED < level){
      digitalWrite(ledPins[LED], HIGH);
    }
    else{
      digitalWrite(ledPins[LED], LOW);
    }
  }
  
}