Dart选择列表中的随机元素，但不应选择超过77的元素

import 'dart:math';

void main() {
  List<int> choices = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77];

  int randomElement = getRandomElement(choices);
  print(randomElement);
}

int getRandomElement(List<int> choices) {
  Random random = Random();
  int randomIndex = random.nextInt(choices.length);

  while (choices[randomIndex] > 77) {
    randomIndex = random.nextInt(choices.length);
  }

  return choices[randomIndex];
}