Sleep sort implementation in Dart

sleep_sort.dart

import 'dart:async';

class Input {
  var sleepTimes = new List();
}

main(List<String> arguments) async {
  var input = new Input();
  arguments.forEach((val) { input.sleepTimes.add(num.parse(val)); } );

  input.sleepTimes.forEach((time) {
    mSleep(time);
  });

}

mSleep(int value) async {
  runFutures(value);
}

Future runFutures(int value) {
  return runLater(value).then((result) {
    print(value);
  });
}

Future runLater(int value) {
  return new Future.delayed(new Duration(seconds: value));
}