Merging Lists

package _15_Lists;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class _03_MergingLists {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<Integer> list1 = Arrays.stream(scanner.nextLine().split(" "))
                .map(Integer::parseInt).collect(Collectors.toList());

        List<Integer> list2 = Arrays.stream(scanner.nextLine().split(" "))
                .map(Integer::parseInt).collect(Collectors.toList());

        List<Integer> listResult = new ArrayList<>();

        int smallestSize = Math.min(list1.size(), list2.size());

        for (int i = 0, j = 0; i < smallestSize * 2; i++) {
            if (i % 2 == 0 || i == 0) {
                listResult.add(i, list1.get(j));
            } else if (i % 2 == 1) {
                listResult.add(i, list2.get(j));
                j++;
            }
        }

        if (list1.size() > list2.size()) {
            listResult.addAll(getRemainingElements(list1, list2));
        } else if (list2.size() > list1.size()) {
            listResult.addAll(getRemainingElements(list2, list1));
        }

        System.out.println(listResult.toString().replaceAll("[\\[\\],]",""));

    }

    public static List<Integer> getRemainingElements
            (List<Integer> longerList, List<Integer> shorterList) {
        List<Integer> nums = new ArrayList<>();
        for (int i = shorterList.size(); i < longerList.size(); i++)
            nums.add(longerList.get(i));
        return nums;
    }
}