void setup() {
  // Inisialisasi pin LED sebagai output
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
}

void loop() {
  // LED berjalan dari kiri ke kanan
  digitalWrite(0, HIGH);
  delay(100);
  digitalWrite(0, LOW);
  
  digitalWrite(1, HIGH);
  delay(100);
  digitalWrite(1, LOW);
  
  digitalWrite(2, HIGH);
  delay(100);
  digitalWrite(2, LOW);
  
  digitalWrite(3, HIGH);
  delay(100);
  digitalWrite(3, LOW);
  
  digitalWrite(4, HIGH);
  delay(100);
  digitalWrite(4, LOW);
  
  digitalWrite(5, HIGH);
  delay(100);
  digitalWrite(5, LOW);
  
  digitalWrite(6, HIGH);
  delay(100);
  digitalWrite(6, LOW);
  
  digitalWrite(7, HIGH);
  delay(100);
  digitalWrite(7, LOW);
  
  digitalWrite(8, HIGH);
  delay(100);
  digitalWrite(8, LOW);
  
  digitalWrite(9, HIGH);
  delay(100);
  digitalWrite(9, LOW);
  
  // LED berjalan dari kanan ke kiri
  digitalWrite(9, HIGH);
  delay(100);
  digitalWrite(9, LOW);
  
  digitalWrite(8, HIGH);
  delay(100);
  digitalWrite(8, LOW);
  
  digitalWrite(7, HIGH);
  delay(100);
  digitalWrite(7, LOW);
  
  digitalWrite(6, HIGH);
  delay(100);
  digitalWrite(6, LOW);
  
  digitalWrite(5, HIGH);
  delay(100);
  digitalWrite(5, LOW);
  
  digitalWrite(4, HIGH);
  delay(100);
  digitalWrite(4, LOW);
  
  digitalWrite(3, HIGH);
  delay(100);
  digitalWrite(3, LOW);
  
  digitalWrite(2, HIGH);
  delay(100);
  digitalWrite(2, LOW);
  
  digitalWrite(1, HIGH);
  delay(100);
  digitalWrite(1, LOW);
  
  digitalWrite(0, HIGH);
  delay(100);
  digitalWrite(0, LOW);
}