static void Main(string[] args)
{
var convert = new ConvertToRoman();
var strFunct = new StringFunctions();
Console.WriteLine();
Console.Write(" Arabic to roman numeral converter.\n Enter a string: ");
var input = Console.ReadLine();
var result = strFunct.ReplaceStrings(input);
Console.WriteLine("\n Result: {0}\n Number of replacements: {1}", result.Item1, result.Item2);
Console.ReadLine();
}
public Tuple <string, int> ReplaceStrings(string input)
{
var convert = new ConvertToRoman();
//break the string into words and put them to List
var words = input.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList();
//store last character of the last word
var lastChar = words.Last().Substring(words.Last().Length - 1, 1).ToCharArray();
//create a tuple for number pairs
var pairs = new List <Tuple <int, string> >();
StringBuilder result = new StringBuilder();
var ending = "";
//if last character of the last word is not a digit, assign the value of "lastChar" to variable "ending"
if (!char.IsDigit(lastChar[0]))
{
var last = words.Last().Remove(words.Last().Length - 1, 1);
for (int i = words.Count; i == words.Count; i++)
{
words[i - 1] = last;
}
ending = lastChar[0].ToString();
}
//assign roman number to each arabic number in list of words and save the pair into a tuple
foreach (var item in words)
{
var number = Regex.Match(item, "[0-9]+");
if (number.Value != "")
{
if (int.Parse(number.ToString()) >= 1 && int.Parse(number.ToString()) <= 3999)
{
var romanNumber = convert.ToRomanNumber(int.Parse(number.ToString()));
//make space after every two roman numerals
for (int i = romanNumber.Length - 2; i >= 0; i -= 2)
{
romanNumber = romanNumber.Insert(i, " ");
}
pairs.Add(Tuple.Create(int.Parse(number.ToString()), romanNumber));
}
}
}
//go through all words and if any of them is an arabic number, replace it with roman number
//concatinate every word into a string
for (int i = 0; i < words.Count; i++)
{
var word = words[i];
for (int j = 0; j < pairs.Count; j++)
{
if (int.TryParse(words[i], out int intinput) && intinput == pairs[j].Item1)
{
word = pairs[j].Item2;
}
}
result.Append(word + " ");
}
//remove any unwanted spaces
var cleanedResult = Regex.Replace(result.ToString(), @"\s+", " ");
//return cleaned string and a number of replacements as a tuple
return(Tuple.Create(cleanedResult.TrimEnd() + ending, pairs.Count));
}
