public override List <int> Split()
{
var listOfSubstrings = new SubstringsOfIntegersRegex().SplitSilent(input);
var rawListOfIntegers = listOfSubstrings.ToListImmutable();
if (rawListOfIntegers.Count == 0)
{
return(new List <int>());
}
if (rawListOfIntegers.Count == 1)
{
var digits = Utility.GetDigits(rawListOfIntegers.ElementAt(0));
if (digits.Count == 0)
{
return(new List <int>());
}
if (digits.Count == 1)
{
return new List <int>()
{
digits.ElementAt(0)
}
}
;
// duplicate code
if (Utility.AllItemsAreSame(digits))
{
return new List <int>()
{
digits.ElementAt(0)
}
}
;
if (digits.Count == 2)
{
return(Utility.GetRange(digits.ElementAt(0), digits.ElementAt(1)));
}
return(digits);
}
// duplicate code
if (Utility.AllItemsAreSame(rawListOfIntegers))
{
return new List <int>()
{
rawListOfIntegers.ElementAt(0)
}
}
;
if (rawListOfIntegers.Count == 2)
{
return(Utility.GetRange(rawListOfIntegers.ElementAt(0), rawListOfIntegers.ElementAt(1)));
}
return(rawListOfIntegers);
}
}
}
/// <summary>
/// splits string into substrings of integers
/// </summary>
/// <param name="regex"></param>
/// <param name="input"></param>
/// <returns></returns>
public static string[] SplitSilent(this SubstringsOfIntegersRegex regex, string input)
{
try {
return(regex.Split(input));
}
catch (Exception) {
return(null);
}
}