55 lines
1.9 KiB
C#
55 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Volian.Controls.Library
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{
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public static class RomanNumeral
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{
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private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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private enum RomanOffset : int
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{
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Hundreds = 2,
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Tens = 4,
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Units = 6
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}
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private static string _Romans = "MDCLXVI";
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private static string RomanPart(RomanOffset offset, int value)
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{
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int iFive = value / 5;
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int iUnits = value % 5;
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int iFour = iUnits / 4;
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return _Romans.Substring(((int)offset), iFour) +
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_Romans.Substring(((int)offset) - iFive - iFour, iFive | iFour) +
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"".PadRight(iUnits % 4, _Romans[((int)offset)]);
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}
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public static string Convert(int number)
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{
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int thousands = number / 1000;
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int hundreds = (number % 1000) / 100;
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int tens = (number % 100) / 10;
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int units = number % 10;
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return "".PadRight(thousands, _Romans[0]) +
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RomanPart(RomanOffset.Hundreds, hundreds) +
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RomanPart(RomanOffset.Tens, tens) +
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RomanPart(RomanOffset.Units, units);
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}
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// private static int[] _TestRomans = new int[] {
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// 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,25,30,40,50,60,69,70,80,90,99,
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// 100,200,400,500,600,666,700,800,900,1000,1444,1666,1945,1997,1999,2000,2007,3000
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// };
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// public static void ShowRomans()
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// {
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// for (int i = 0; i < _TestRomans.Length; i++)
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// {
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// if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", _TestRomans[i], Convert(_TestRomans[i]));
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// }
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// //if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", 4, Convert(4));
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// //if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", 5, Convert(5));
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// //if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", 6, Convert(6));
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// //if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", 8, Convert(8));
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// //if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat("{0},{1}", 9, Convert(9));
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// }
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}
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}
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