Here you can find the source of toCharArray(int number, int exactArrayLength)
| Parameter | Description |
|---|---|
| number | The number to convert to a char array. |
| exactArrayLength | The exact length of the returned array. |
public static char[] toCharArray(int number, int exactArrayLength)
//package com.java2s; /* Copyright (c) 2002 Graz University of Technology. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * /*from ww w . j av a 2 s. c o m*/ * 3. The end-user documentation included with the redistribution, if any, must * include the following acknowledgment: * * "This product includes software developed by IAIK of Graz University of * Technology." * * Alternately, this acknowledgment may appear in the software itself, if * and wherever such third-party acknowledgments normally appear. * * 4. The names "Graz University of Technology" and "IAIK of Graz University of * Technology" must not be used to endorse or promote products derived from * this software without prior written permission. * * 5. Products derived from this software may not be called * "IAIK PKCS Wrapper", nor may "IAIK" appear in their name, without prior * written permission of Graz University of Technology. * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ public class Main { /** * Converts the given number into a char-array. If the length of the array * is shorter than the required exact length, the array is padded with leading * '0' chars. If the array is longer than the wanted length the most * significant digits are cut off until the array has the exact length. * * @param number The number to convert to a char array. * @param exactArrayLength The exact length of the returned array. * @return The numebr as char array, one char for each decimal digit. * @preconditions (exactArrayLength >= 0) * @postconditions (result <> null) * and (result.length == exactArrayLength) */ public static char[] toCharArray(int number, int exactArrayLength) { char[] charArray = null; String numberString = Integer.toString(number); char[] numberChars = numberString.toCharArray(); if (numberChars.length > exactArrayLength) { // cut off digits beginning at most significant digit charArray = new char[exactArrayLength]; for (int i = 0; i < charArray.length; i++) { charArray[i] = numberChars[i]; } } else if (numberChars.length < exactArrayLength) { // pad with '0' leading chars charArray = new char[exactArrayLength]; int offset = exactArrayLength - numberChars.length; for (int i = 0; i < charArray.length; i++) { charArray[i] = (i < offset) ? '0' : numberChars[i - offset]; } } else { charArray = numberChars; } return charArray; } }