Question

How to reverse a sequential stream in Java

Answer 1

import java.util.LinkedList;
import java.util.stream.Stream;
 
public class MyClass
{
    public static <T> Stream<T> reverse(Stream<T> stream) {
        LinkedList<T> stack = new LinkedList<>();
        stream.forEach(stack::push);
 
        return stack.stream();
    }
 
    public static void main(String[] args)
    {
        Stream<Integer> stream = Stream.of(1, 2, 3, 4, 5, 6, 7);
 
        Stream<Integer> reverse = reverse(stream);
        reverse.forEach(System.out::println);
    }
}




/*
run:

7
6
5
4
3
2
1

*/

 

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