Java Program to Convert Iterator to Spliterator

Given an Iterator, the task is to convert it into Spliterators in Java.

Examples:

Input: Iterator = {1, 2, 3, 4, 5}
Output: {1, 2, 3, 4, 5}

Input: Iterator = {'G', 'e', 'e', 'k', 's'}
Output: {'G', 'e', 'e', 'k', 's'}

Approach:

1. Get the Iterator.
2. Convert the iterator to Spliterator using Spliterators.spliteratorUnknownSize() method.
3. Return the Spliterator.

Below is the implementation of the above approach:

// Java program to get a Spliterator
// from a given Iterator

import java.util.*;

class GFG {

    // Function to get the Spliterator
    public static <T> Spliterator<T>
    getSpliteratorFromIterator(Iterator<T> iterator)
    {
        return Spliterators
            .spliteratorUnknownSize(iterator, 0);
    }

    // Driver code
    public static void main(String[] args)
    {
        // Get the Iterator
        Iterator<Integer>
            iterator = Arrays.asList(1, 2, 3, 4, 5)
                           .iterator();

        // Get the Spliterator from the Iterator
        Spliterator<Integer>
            si = getSpliteratorFromIterator(iterator);

        // Print the elements of Spliterator
        si.forEachRemaining(System.out::println);
    }
}

Output:

1
2
3
4
5