Here you can find the source of merge(final String[] array1, final String[] array2)
public static List<String> merge(final String[] array1, final String[] array2)
//package com.java2s; /*/*from w w w .jav a 2s. co m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import java.util.ArrayList; import java.util.List; public class Main { /** * Returns list1 with everything in list2, ignoring duplicates. */ public static <T> List<T> merge(final List<T> list1, final List<T> list2) { for (final T obj : list2) { if (!(list1.contains(obj))) { list1.add(obj); } } return list1; } public static List<String> merge(final String[] array1, final String[] array2) { final List<String> prefixes = new ArrayList<String>(); addNoDuplicates(array1, prefixes); addNoDuplicates(array2, prefixes); return prefixes; } private static void addNoDuplicates(final String[] array, final List<String> list) { for (int i = 0; i < array.length; i++) { if (!list.contains(array[i])) { list.add(array[i]); } } } }