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                ### [數組](https://lingcoder.gitee.io/onjava8/#/book/14-Streams?id=%e6%95%b0%e7%bb%84) * `toArray()`:將流轉換成適當類型的數組。 * `toArray(generator)`:在特殊情況下,生成自定義類型的數組。 當我們需要得到數組類型的數據以便于后續操作時,上面的方法就很有用。假設我們需要復用流產生的隨機數時,就可以這么使用。代碼示例: ~~~ // streams/RandInts.java package streams; import java.util.*; import java.util.stream.*; public class RandInts { private static int[] rints = new Random(47).ints(0, 1000).limit(100).toArray(); public static IntStream rands() { return Arrays.stream(rints); } } ~~~ 上例將100個數值范圍在 0 到 1000 之間的隨機數流轉換成為數組并將其存儲在`rints`中。這樣一來,每次調用`rands()`的時候可以重復獲取相同的整數流。 ### [循環](https://lingcoder.gitee.io/onjava8/#/b
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