union two List - Android java.util

Android examples for java.util:List

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Description

union two List

Demo Code

/*//from   w w  w.j  a  v  a2  s.c  o  m
 * Copyright (c) 2016 Zhang Hai <Dreaming.in.Code.ZH@Gmail.com>
 * All Rights Reserved.
 */
import java.util.AbstractList;
import java.util.List;
import java.util.RandomAccess;

public class Main{
    public static <E> List<E> union(List<E> list1, List<E> list2) {
        if (list1 instanceof RandomAccess && list2 instanceof RandomAccess) {
            return new RandomAccessUnionList<>(list1, list2);
        } else {
            return new UnionList<>(list1, list2);
        }
    }
}

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