Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        final List<String> fruits = Arrays.asList(new String[] { "A", "B", "C", "D" });
        System.out.println(fruits);
        System.out.println(merge(fruits, 1));

    }

    public static List<String> merge(final List<String> list, final int index) {
        if (list.isEmpty()) {
            throw new IndexOutOfBoundsException("Cannot merge empty list");
        } else if (index + 1 >= list.size()) {
            throw new IndexOutOfBoundsException("Cannot merge last element");
        } else {
            final List<String> result = new ArrayList<String>(list);
            result.set(index, list.get(index) + list.get(index + 1));
            result.remove(index + 1);
            return result;
        }
    }

}