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CollectionUtils.java
/* * Copyright (C) 2016 The Android Open Source Project * * Licensed 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 */ package com.google.android.media.tv.companionlibrary.utils; import java.util.Arrays; /** * Static utilities for collections */ public class CollectionUtils { /** * Returns an array with the arrays concatenated together. * * @see
Stackoverflow answer
by *
Joachim Sauer
*/ public static
T[] concatAll(T[] first, T[]... rest) { int totalLength = first.length; for (T[] array : rest) { totalLength += array.length; } T[] result = Arrays.copyOf(first, totalLength); int offset = first.length; for (T[] array : rest) { System.arraycopy(array, 0, result, offset, array.length); offset += array.length; } return result; } }