private StringResponse FilterString(string inputString)
{
StringResponse stringResponse = new StringResponse(inputString);
int[] iaArr = inputString.Split(',').Select(n => Convert.ToInt32(n)).ToArray();
string cleanString = string.Empty;
foreach (int ia in iaArr)
{
if (!IsPrime(ia))
{
if (string.IsNullOrEmpty(cleanString))
{
cleanString = ia.ToString();
}
else
{
cleanString = cleanString + "," + ia.ToString();
}
}
}
stringResponse.InputString = cleanString;
return(stringResponse);
}
public StringResponse ProcessSort(StringResponse stringResponse)
{
var error = ValidateInputString(stringResponse.InputString);
if (error != null)
{
return(new StringResponse(error));
}
StringResponse cleanString = SortString(stringResponse.InputString);
return(cleanString);
}
private StringResponse SortString(string inputString)
{
StringResponse stringResponse = new StringResponse(inputString);
int[] iaArr = inputString.Split(',').Select(n => Convert.ToInt32(n)).ToArray();
iaArr = iaArr.OrderByDescending(c => c).ToArray();
String sortString = string.Empty;
foreach (int ia in iaArr)
{
if (string.IsNullOrEmpty(sortString))
{
sortString = ia.ToString();
}
else
{
sortString = sortString + "," + ia.ToString();
}
}
stringResponse.InputString = sortString;
return(stringResponse);
}