Java String Case Insert invertHostName(String hostNameIn)

Description

invert Host Name

License

Open Source License

Declaration

public static String invertHostName(String hostNameIn) 

Method Source Code

//package com.java2s;
/**//from  w  w  w.j  a  v a  2 s .co m
 * Copyright 2008 - CommonCrawl Foundation
 * 
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 **/

public class Main {
    public static String invertHostName(String hostNameIn) {
        StringBuffer hostNameOut = new StringBuffer();

        char tokens[] = hostNameIn.toCharArray();
        int lastScanStart = hostNameIn.length() - 1;
        int currentIndex = lastScanStart;

        while (currentIndex != -1) {
            if (tokens[currentIndex] == '.') {
                if (lastScanStart - currentIndex != 0) {
                    hostNameOut.append(tokens, currentIndex + 1, lastScanStart - currentIndex);
                    if (currentIndex != 0)
                        hostNameOut.append('.');
                }
                lastScanStart = currentIndex - 1;
            } else if (currentIndex == 0) {
                if (lastScanStart - currentIndex + 1 != 0) {
                    hostNameOut.append(tokens, 0, lastScanStart + 1);
                }
            }
            currentIndex--;
        }

        return hostNameOut.toString();
    }
}

Related

1. invertCase(String str)
2. invertDate(String sDate)
3. inverter(String str)
4. inverter(String string)
5. inverterString(String palavra)
6. invertKanaCase(String result)
7. invertString(String s)