Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.*;

import java.util.stream.Collectors;
import java.util.stream.IntStream;
import java.util.stream.Stream;

public class Main {
    /**
     * Split the list and return the stream with the resultant lists.
     * @param list to be split
     * @param size of each list after splitting.
     * @param <T> type of list.
     * @return {@link List} of {@link ArrayList}s
     */
    public static <T> List<List<T>> splitArrayList(final List<T> list, final int size) {
        return splitListStream(list, size).map(ArrayList::new).collect(Collectors.toList());
    }

    /**
     * Split the list and return the stream with the resultant lists.
     *
     * @param list to be split
     * @param size of each list after splitting.
     * @param <T>  type of list.
     * @return {@link Stream} of {@link List}s
     */
    public static <T> Stream<List<T>> splitListStream(final List<T> list, final int size) {

        if (size <= 0) {
            throw new IllegalArgumentException("Invalid Split Size");
        }

        final int listSize = list.size();

        if (listSize == 0) {
            return Stream.empty();
        }

        return IntStream.rangeClosed(0, (listSize - 1) / size)
                .mapToObj(n -> list.subList(n * size, Math.min((n + 1) * size, listSize)));
    }
}