int pinLeds[] = {11, 10, 9, 8};
int pinInput[] = {6, 5, 4, 3};

void setup() {
  // put your setup code here, to run once:
  for(int i = 0; i < 4; i++){
    pinMode(pinLeds[i], OUTPUT);
    pinMode(pinInput[i], INPUT_PULLUP);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i = 0; i < 4; i++){
    int val = digitalRead(pinInput[i]);

    if(val == 0){
      digitalWrite(pinLeds[i], 1);
    }
    else{
      digitalWrite(pinLeds[i], 0);
    }
  }
}