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我有一个填充的 NSArray。我希望能够以随机顺序打印出数组的内容，以便每个对象只打印一次。下次我打印出来时，我希望它们的顺序与以前打印出来的顺序完全不同。如果有人可以帮助我，将不胜感激。 谢谢 棒棒糖