Java tutorial
//package com.java2s; /* * 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.List; import java.util.ArrayList; public class Main { /** * Transform a multidimensional array into a one-dimensional list. * * @param array Array (possibly multidimensional). * @return a list of all the {@code Object} instances contained in * {@code array}. */ public static Object[] flatten(Object[] array) { final List<Object> list = new ArrayList<Object>(); if (array != null) { for (Object o : array) { if (o instanceof Object[]) { for (Object oR : flatten((Object[]) o)) { list.add(oR); } } else { list.add(o); } } } return list.toArray(); } }