Blinking Two LED’s using Arduino

//1. Blinking Two LED’s using Arduino
int LED1 = 10;
int LED2 = 11;
void setup()
{
pinMode(LED1,OUTPUT);
pinMode(LED2,OUTPUT);
}
void loop()
{
digitalWrite(LED1,HIGH);
delay(1000);
digitalWrite(LED1,LOW);
digitalWrite(LED2,HIGH);
delay(1000);
digitalWrite(LED2,LOW);
}