Question

How to generate an IntStream in decreasing order with Java

Answer 1

import java.util.stream.IntStream;
  
public class MyClass
{
    public static void main(String[] args)
    {
        int start = 3;  
        int end = 9;   
 
        IntStream.range(start, end)
                .map(i -> start + (end - 1 - i))
                .forEach(System.out::println);
    }
}
 
 
 
 
 
/*
run:
 
8
7
6
5
4
3
 
*/

 

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Answer 2

import java.util.stream.IntStream;
  
public class MyClass
{
    public static void main(String[] args)
    {
        int start = 3;  
        int end = 9;   
 
        IntStream.iterate(end - 1, i -> i - 1)
                .limit(end - start)
                .forEach(System.out::println);
    }
}
 
 
 
 
 
/*
run:
 
8
7
6
5
4
3
 
*/

 

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