// factory method that returns the language translator for the corresponding input language
public static NumberTranslator GetNumberTranslator(string lang)
{
NumberTranslator numTranslator = null;
if (lang.Equals("english", StringComparison.InvariantCultureIgnoreCase))
{
numTranslator = new EnglishTranslator();
}
// need to write more if else when new languages added.
return(numTranslator);
}
// Utility function to print the numbers in the range [end - start] which are multiple of given num translated in given language
static void PrintMultiplesOfNinRange(int startNum, int endNum, int divisibleBy, string language)
{
// get the number translator corresponding to the input language from the factory.
NumberTranslator numTranslator = NumberTranslatorFactory.GetNumberTranslator(language);
// iterate over the range in reverse.
for (int iLoopCounter = endNum; iLoopCounter >= startNum; iLoopCounter--)
{
// if the number is a multiple of divisibleBy, then print it.
if ((iLoopCounter % divisibleBy) == 0)
{
// get the string that reprsents number worded in the given language.
string numStr = numTranslator.Translate(iLoopCounter);
Console.WriteLine(numStr);
}
}
}
