Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*********************************************************************
 *
 *      Copyright (C) 2002 Andrew Khan
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

public class Main {
    /**
     * Gets the column letter corresponding to the 0-based column number
     * 
     * @param column the column number
     * @return the letter for that column number
     */
    public static String getColumnReference(int column) {
        StringBuffer buf = new StringBuffer();
        getColumnReference(column, buf);
        return buf.toString();
    }

    /**
     * Gets the column letter corresponding to the 0-based column number
     * 
     * @param column the column number
     * @param buf the string buffer in which to write the column letter
     */
    public static void getColumnReference(int column, StringBuffer buf) {
        int v = column / 26;
        int r = column % 26;

        StringBuffer tmp = new StringBuffer();
        while (v != 0) {
            char col = (char) ('A' + r);

            tmp.append(col);

            r = v % 26 - 1; // subtract one because only rows >26 preceded by A
            v = v / 26;
        }

        char col = (char) ('A' + r);
        tmp.append(col);

        // Insert into the proper string buffer in reverse order
        for (int i = tmp.length() - 1; i >= 0; i--) {
            buf.append(tmp.charAt(i));
        }
    }
}