/// <summary>
/// Converts a roman numeral sequence into a decimal number
/// </summary>
/// <param name="stuff"> The roman numberal sequence</param>
public static int ToDecimal(string stuff)
{
if (stuff.Length == 0)
{
return(0);
}
int value = 0;
for (int i = 0; i < stuff.Length - 1; i++)
{
Numeral norm = GetNumeral(stuff[i]);
Numeral next = GetNumeral(stuff[i + 1]);
if (next.value > norm.value)
{
value -= norm.value;
}
else
{
value += norm.value;
}
}
value += GetNumeral(stuff[stuff.Length - 1]).value;
return(value);
}
/// <summary>
/// Converts a decimal number into a roman numeral
/// </summary>
/// <param name="number"> The decimal number</param>
public static string toRoman(int number)
{
StringBuilder builder = new StringBuilder();
int value = number;
int numIndex = 0;
while (value > 0)
{
Numeral num = numerals[numIndex];
//DEBUG Console.WriteLine(" ~ Value" + value);
//Standard check
if (value >= num.value)
{
//DEBUG Console.WriteLine(" ~ Primary" + num.symbol);
builder.Append(num.symbol);
value -= num.value;
}
else
{
//DEBUG Console.WriteLine(" ~ FSecondary " + num.symbol);
//Look for combinations
Numeral?next = null;
for (int search = numerals.Length - 1; search > numIndex; search--)
{
Numeral candidate = numerals[search];
//DEBUG Console.WriteLine(" ~ Try " + candidate.symbol);
//Prevent Stuff like VX = 5 from happening
if (num.value - candidate.value == candidate.value)
{
//DEBUG Console.Write(" ~ Cancel try " + candidate.symbol);
continue;
}
if (value >= num.value - candidate.value)
{
next = candidate;
break;
}
}
if (next != null)
{
//DEBUG Console.WriteLine(" ~ SecNext " + next.Value.symbol);
builder.Append(next.Value.symbol).Append(num.symbol);
value -= num.value - next.Value.value;
}
//Move to next numeral
numIndex += 1;
}
}
return(builder.ToString());
}