I cant get the program to loop

Other Hardware LEDs and Multiplexing
34

Seems to be working but after a while of running some of the led shut off then i reset and it runs for a while and leds start to shut off again.

int ledArray[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
int delayTime = 200;

void setup() {
  //initalize ledArray as outputs
  for (int i = 0; i < 10; i++)
  {
    pinMode(ledArray[i], OUTPUT);
  }
}

void loop() {
  // turn leds on from 2-10.
  for (int i = 0; i < 10; i++)
  {
    digitalWrite(ledArray[i], HIGH);
    delay(delayTime);
  }
  // turn leds off from 10-2.
  for (int i = 10; i > -1; i--)
  {
    digitalWrite(ledArray[i], LOW);
    delay(delayTime);
  }

}