A simple problem with arduino UNO about optimizing code - arduino

Question

It this a really simple code about turning on an off some LEDs, but I want it not to be so repetititve
I've tried to make a loop, but i couldn't get it, I did my best, but I'm really bad at this :(( pls need someone's jelp
`
#define LED 2
#define LED2 3
#define LED3 4
#define LED4 5
#define LED5 6
void setup()
{
pinMode(LED, OUTPUT);
pinMode (LED2, OUTPUT);
pinMode(LED3, OUTPUT);
pinMode(LED4, OUTPUT);
pinMode(LED5, OUTPUT);
}
void loop()
{
digitalWrite(LED, HIGH);
delay(1000);
digitalWrite(LED2, HIGH);
delay(500);
digitalWrite(LED3, HIGH);
delay(250);
digitalWrite(LED4, HIGH);
delay(125);
digitalWrite(LED5, HIGH);
delay(500);
digitalWrite(LED, LOW);
delay(1000);
digitalWrite(LED2, LOW);
delay(500);
digitalWrite(LED3, LOW);
delay(250);
digitalWrite(LED4, LOW);
delay(125);
digitalWrite(LED5, LOW);
delay(500);
}`

Answer 1

I'll rewrite what Oleg Mazurov said in the comment:
#define NUMBER_OF_LEDS 5
static const uint8_t a_led[NUMBER_OF_LEDS] = {2, 3, 4, 5, 6};
static const uint16_t a_delay[NUMBER_OF_LEDS] = {1000, 500, 250, 125, 500};
void setup() {
for (int i = 0; i < NUMBER_OF_LEDS; i++) {
pinMode(a_led[i], OUTPUT);
}
}
void loop() {
for (int i = 0; i < NUMBER_OF_LEDS; i++) {
digitalWrite(a_led[i], !digitalRead(a_led[i]));
delay(a_delay[i]);
}
}