如何从Map中获取多个随机值？- Dart

import 'dart:math';

void main() {
  Map<String, int> map = {
    'a': 1,
    'b': 2,
    'c': 3,
    'd': 4,
    'e': 5,
  };

  List<String> keys = map.keys.toList(); // 将Map的键转换为列表

  List<String> randomKeys = getRandomKeys(keys, 3); // 获取3个随机键

  for (String key in randomKeys) {
    int value = map[key]; // 根据键获取对应的值
    print('$key: $value');
  }
}

List<String> getRandomKeys(List<String> keys, int count) {
  List<String> randomKeys = [];
  Random random = Random();

  while (randomKeys.length < count) {
    String key = keys[random.nextInt(keys.length)]; // 从键列表中随机选择一个键
    if (!randomKeys.contains(key)) {
      randomKeys.add(key);
    }
  }

  return randomKeys;
}