fork download 
  1. using System;
  2. using System.Collections.Generic;
  3.  
  4. public class RomanNumeralUtility
  5. {
  6. 	private static Dictionary<char, int> RomanMap = new Dictionary<char, int>()
  7. 	{
  8. 		{'I', 1},
  9. 		{'V', 5},
  10. 		{'X', 10},
  11. 		{'L', 50},
  12. 		{'C', 100},
  13. 		{'D', 500},
  14. 		{'M', 1000}
  15. 	};
  16.  
  17. 	public static void Main()
  18. 	{
  19. 		string[] inputList = {
  20. 			"i", "ii", "iii", "iv", "v", "vi", "vii", "viii", "ix", "x",
  21. 			"xi", "xii", "xiii", "xiv", "xv", "xvi", "xvii", "xviii", "xix", "xx",
  22. 			"xxi", "xxii", "xxiii", "xxiv", "xxv", "xxvi", "xxvii", "xxviii", "xxix", "xxx",
  23. 			"xxxi", "xxxii", "xxxiii", "xxxiv", "xxxv", "xxxvi", "xxxvii", "xxxviii", "xxxix", "xl",
  24. 			"xli", "xlii", "xliii", "xliv", "xlv", "xlvi", "xlvii", "xlviii", "xlix", "l" };
  25. 		foreach (string numeral in inputList)
  26. 		{
  27. 			Console.WriteLine(RomanToInteger(numeral));	
  28. 		}
  29. 	}
  30.  
  31. 	public static int RomanToInteger(string roman)
  32. 	{
  33. 		roman = roman.ToUpper();
  34. 		int number = 0;
  35. 		for (int i = 0; i < roman.Length; i++)
  36. 		{
  37. 		    if (i + 1 < roman.Length && RomanMap[roman[i]] < RomanMap[roman[i + 1]])
  38. 		    {
  39. 		    	number -= RomanMap[roman[i]];
  40. 		    }
  41. 		    else
  42. 		    {
  43. 				number += RomanMap[roman[i]];
  44. 		    }
  45. 		}
  46. 		return number;
  47. 	}
  48. }
Success #stdin #stdout 0.03s 15152KB
comments (?)
stdin 
Standard input is empty
stdout 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
https://ideone.com/mq3Sq9
Roman numeral to integer (public)
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!