Red-rays distance sensor for Android

Sketch.java

void setup() {
  Serial.begin(9600);
  
  pinMode(11, OUTPUT);
  digitalWrite(11, HIGH);
}

void loop() {
  // put your main code here, to run repeatedly:
    
    int sum = 0;
    for (int i = 0; i < 100; i++) { 
        sum += analogRead(0);
    }
    int average = sum / 100;
    Serial.println(average);
    
    delay(100);
}