Java 中的 IntStream asDoubleStream()
哎哎哎:# t0]https://www . geeksforgeeks . org/intstream-asdoublestream-Java/
int stream as double stream()返回一个由该流的元素组成的 DoubleStream ，转换为 double。这是一个 的中级操作。 在流实例上调用中间操作，在它们完成处理后，它们给出一个流实例作为输出。
语法:
DoubleStream asDoubleStream()
Where, DoubleStream is a sequence of
primitive double-valued element.
Return Value : IntStream asDoubleStream() returns a
DoubleStream consisting of the elements of this stream,
converted to double.
例 1 :
// Java code for DoubleStream asDoubleStream()
// to return a DoubleStream consisting of
// the elements of this stream
import java.util.*;
import java.util.stream.IntStream;
import java.util.stream.DoubleStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// Creating an IntStream
IntStream stream = IntStream.of(3, 5, 9, 12, 14);
// Using DoubleStream asDoubleStream()
DoubleStream stream1 = stream.asDoubleStream();
// Displaying DoubleStream consisting of
// the elements of this stream
stream1.forEach(System.out::println);
}
}
输出:
3.0
5.0
9.0
12.0
14.0
例 2 :
// Java code for DoubleStream asDoubleStream()
// to return a DoubleStream consisting of
// the elements of this stream
import java.util.*;
import java.util.stream.IntStream;
import java.util.stream.DoubleStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// Creating an IntStream and using asDoubleStream()
DoubleStream stream = IntStream.range(3, 8).asDoubleStream();
// Displaying DoubleStream consisting of
// the elements of this stream
stream.forEach(System.out::println);
}
}
输出:
3.0
4.0
5.0
6.0
7.0
例 3 :
// Java code for DoubleStream asDoubleStream()
// to return a DoubleStream consisting of
// the elements of this stream
import java.util.*;
import java.util.stream.IntStream;
import java.util.stream.DoubleStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// Creating an IntStream and using asDoubleStream()
// to display the elements of IntStream and
// DoubleStream together
DoubleStream stream = IntStream.range(3, 8)
.peek(System.out::println)
.asDoubleStream();
// Displaying DoubleStream consisting of
// the elements of this stream
stream.forEach(System.out::println);
}
}
输出:
3
3.0
4
4.0
5
5.0
6
6.0
7
7.0
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