问题描述
对于一个编程类，我正在为第一个作业分配创建一个二十一点程序。教授给了我们一个样本卡类，其中包括将它们添加到甲板上的方法。对于她的甲板，她使用一个ArrayList，您可以使用Collections.shuffle（）方法轻松地使用Knuth Shuffle。
For a programming class I am creating a blackjack program for the first homework assignment. The professor has given us a sample Card class, which includes the method to add them to a deck. For her deck, she uses an ArrayList, which you can easily Knuth Shuffle with the Collections.shuffle() method.
该方法对于Stacks来说不起作用（显然） ，但是我认为一个Stack结构对于这个程序来说最有效，因为你可以弹出和推出卡片进出卡片。
That method does not work for Stacks though (obviously), but I think a Stack structure would work best for this program because you may pop and push cards into and out of the deck.
推荐答案
p> 和实现界面，将一个 java.util.List<？> 作为参数呃您应该可以将 Stack 传递到 Collections.shuffle（）中，除非您使用不同的堆栈实现这不实现 java.util.list< E> 。如果你是，我建议你切换到不同的堆栈实现。
Both java.util.ArrayList<E> and java.util.stack<E> implement the java.util.List<E> interface, and Collections.shuffle() takes a java.util.List<?> as a parameter. You should be able to pass a Stack into Collections.shuffle(), unless you're using a different stack implementation that does not implement java.util.list<E>. If you are, I would advise you to switch to a different stack implementation.
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