Here you can find the source of reverse(List
public static <T> List<T> reverse(List<T> xs)
//package com.java2s; /*/*from www .j a v a 2s . co m*/ * Copyright 2012 Andy Boothe * * 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.List; public class Main { public static <T> List<T> reverse(List<T> xs) { for (int i = 0; i < xs.size() / 2; i++) { T temp = xs.get(i); xs.set(i, xs.get(xs.size() - i - 1)); xs.set(xs.size() - i - 1, temp); } return xs; } }