Java Decimal to Roman decimalToRoman(int binary, boolean oldFashion)

Description

decimal To Roman

License

Open Source License

Declaration

public static String decimalToRoman(int binary, boolean oldFashion) 

Method Source Code

//package com.java2s;
/*/*  w  w w . j a  v  a 2s .  co  m*/
 * Metadata Editor
 * @author Jiri Kremser
 * 
 * 
 * 
 * Metadata Editor - Rich internet application for editing metadata.
 * Copyright (C) 2011  Jiri Kremser (kremser@mzk.cz)
 * Moravian Library in Brno
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * 
 */

public class Main {
    private static final String[] RCODE_1 = { "M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV",
            "I" };
    private static final String[] RCODE_2 = { "M", "DCCCC", "D", "CCCC", "C", "LXXXX", "L", "XXXX", "X", "VIIII",
            "V", "IIII", "I" };
    private static final int[] BVAL = { 1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1 };

    public static String decimalToRoman(int binary, boolean oldFashion) {
        if (binary <= 0 || binary >= 4000) {
            throw new NumberFormatException("Value outside roman numeral range.");
        }
        String roman = "";

        // Loop from biggest value to smallest, successively subtracting,
        // from the binary value while adding to the roman representation.
        for (int i = 0; i < RCODE_1.length; i++) {
            while (binary >= BVAL[i]) {
                binary -= BVAL[i];
                roman += oldFashion ? RCODE_2[i] : RCODE_1[i];
            }
        }
        return roman;
    }
}

Related

1. decimal2roman(int src)