20 lines
625 B
Java
20 lines
625 B
Java
// streams/StreamOfRandoms.java
|
|
// ©2016 MindView LLC: see Copyright.txt
|
|
// We make no guarantees that this code is fit for any purpose.
|
|
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
|
|
import java.util.*;
|
|
import java.util.stream.*;
|
|
|
|
public class StreamOfRandoms {
|
|
static Random rand = new Random(47);
|
|
public static void main(String[] args) {
|
|
Stream.of(1, 2, 3, 4, 5)
|
|
.flatMapToInt(i -> IntStream.concat(
|
|
rand.ints(0, 100).limit(i), IntStream.of(-1)))
|
|
.forEach(n -> System.out.format("%d ", n));
|
|
}
|
|
}
|
|
/* Output:
|
|
58 -1 55 93 -1 61 61 29 -1 68 0 22 7 -1 88 28 51 89 9 -1
|
|
*/
|