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. */ public class Main { /** * Green implementation of toCharArray. * * @param cs the {@code CharSequence} to be processed * @return the resulting char array */ static char[] toCharArray(final CharSequence cs) { if (cs instanceof String) { return ((String) cs).toCharArray(); } final int sz = cs.length(); final char[] array = new char[cs.length()]; for (int i = 0; i < sz; i++) { array[i] = cs.charAt(i); } return array; } }