Here you can find the source of reverse(Iterable
private static <T> Iterator<T> reverse(Iterable<T> values)
//package com.java2s; /**/*w w w .ja v a2 s . c o m*/ * Copyright (C) 2013 all@code-story.net * * 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 */ import java.util.*; public class Main { private static <T> Iterator<T> reverse(Iterable<T> values) { LinkedList<T> reversed = new LinkedList<>(); for (T value : values) { reversed.add(value); } return reversed.descendingIterator(); } }