private static int GetLowerPowerOfTenRomanNumeralValue(int lowerRomanNumeralValue, int upperRomanNumeralValue)
{
int lowerPowerOfTenRomanNumeralValue = lowerRomanNumeralValue;
if (MathCalculator.IsValuePowerOfTen(upperRomanNumeralValue))
{
lowerPowerOfTenRomanNumeralValue = GetNextLowerPowerOfTenRomanNumeral(lowerRomanNumeralValue);
}
return(lowerPowerOfTenRomanNumeralValue);
}
private static int GetNextLowerPowerOfTenRomanNumeral(int currentValue)
{
int lowerPowerOfTenRomanNumeralValue = 0;
if (MathCalculator.IsValuePowerOfTen(currentValue))
{
lowerPowerOfTenRomanNumeralValue = currentValue;
}
else
{
int lowerRomanNumeralIndex = RomanNumerals.IndexOfValue(currentValue);
for (int i = lowerRomanNumeralIndex; i >= 0; i--)
{
int currentRomanNumeralValue = GetRomanNumeralValueAtIndex(i);
if (MathCalculator.IsValuePowerOfTen(currentRomanNumeralValue))
{
lowerPowerOfTenRomanNumeralValue = currentRomanNumeralValue;
break;
}
}
}
return(lowerPowerOfTenRomanNumeralValue);
}