Solución en C#

eltoby/RomanNumerals/RomanNumerals.Data/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("RomanNumerals.Data")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("RomanNumerals.Data")]
+[assembly: AssemblyCopyright("Copyright ©  2011")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("be4a5b92-3a02-4ced-8c09-980b792b4a31")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

eltoby/RomanNumerals/RomanNumerals.Data/ReplacementPatternCatalog.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using RomanNumerals.Objects;
+namespace RomanNumerals.Data
+{
+    public class ReplacementPatternCatalog
+    {
+        static ReplacementPatternCatalog instance;
+        List<ReplacementPattern> patterns;
+        private ReplacementPatternCatalog()
+        {
+            patterns = new List<ReplacementPattern>();
+
+            RomansCatalog romCatalog =RomansCatalog.GetInstance();
+            foreach (Roman r in romCatalog.GetAll())
+            {
+                Roman higher = romCatalog.Higher(r);
+                if (r.Repeatable)
+                {                   
+                    if (higher == null)
+                        continue;
+
+                    StringBuilder patternBuilder = new StringBuilder();
+                    patternBuilder.Append(r.Letter[0], 4);
+                    patterns.Add(new ReplacementPattern(patternBuilder.ToString(), string.Concat(r.Letter, higher.Letter)));
+                }
+                else
+                {
+                    Roman lower = romCatalog.Lower(r);
+                    if (lower == null)
+                        continue;
+
+                    StringBuilder patternBuilder = new StringBuilder();
+                    patternBuilder.Append(r.Letter);
+                    patternBuilder.Append(lower.Letter);
+                    patternBuilder.Append(r.Letter);
+
+                    StringBuilder replacementBuilder = new StringBuilder();
+                    replacementBuilder.Append(lower.Letter);
+                    replacementBuilder.Append(higher.Letter);
+                    patterns.Add(new ReplacementPattern(patternBuilder.ToString(), replacementBuilder.ToString()));                   
+                }
+            }
+        }
+
+        public static ReplacementPatternCatalog GetInstance()
+        {
+            if (instance == null)
+                instance = new ReplacementPatternCatalog();
+            return instance;
+        }
+
+        public ReplacementPattern[] GetAll()
+        {
+            return patterns.ToArray();
+        }
+
+    }
+}

eltoby/RomanNumerals/RomanNumerals.Data/RomanNumerals.Data.csproj

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+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.50727</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{E0E74485-391E-417C-89DD-BC83FCB35168}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>RomanNumerals.Data</RootNamespace>
+    <AssemblyName>RomanNumerals.Data</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReplacementPatternCatalog.cs" />
+    <Compile Include="RomansCatalog.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\RomanNumerals.Objects\RomanNumerals.Objects.csproj">
+      <Project>{1A6A329E-C543-4FFC-83EE-CEA7E9D55DBD}</Project>
+      <Name>RomanNumerals.Objects</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

eltoby/RomanNumerals/RomanNumerals.Data/RomansCatalog.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using RomanNumerals.Objects;
+namespace RomanNumerals.Data
+{
+    public class RomansCatalog
+    {
+        static RomansCatalog instance;
+        List<Roman> romans;
+        private RomansCatalog()
+        {
+            romans = new List<Roman>();
+            romans.Add(new Roman("I", 1, true));
+            romans.Add(new Roman("V", 5, false));
+            romans.Add(new Roman("X", 10, true));
+            romans.Add(new Roman("L", 50, false));
+            romans.Add(new Roman("C", 100, true));
+            romans.Add(new Roman("D", 500, false));
+            romans.Add(new Roman("M", 1000, true));            
+        }
+
+        public static RomansCatalog GetInstance()
+        {
+            if (instance == null)
+                instance = new RomansCatalog();
+            return instance;
+        }
+
+        public Roman[] GetAll()
+        {
+            return romans.ToArray();
+        }
+
+        public Roman Higher(Roman number)
+        {
+            bool isNext = false;
+            foreach (Roman r in romans)
+                if (isNext)
+                    return r;
+                else
+                    if (r == number)
+                        isNext = true;
+
+            return null;
+        }
+        public Roman Lower(Roman number)
+        {
+            Roman previous = null;
+            foreach (Roman r in romans)
+                if (r == number)
+                    return previous;
+                else
+                    previous = r;
+
+            return null;
+        }
+
+        public Roman GetOne(char letter)
+        {
+            foreach (Roman r in romans)
+                if (r.Letter == letter.ToString())
+                    return r;
+            return null;
+        }
+    }
+}

eltoby/RomanNumerals/RomanNumerals.Logic/Converter.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using RomanNumerals.Data;
+using RomanNumerals.Objects;
+namespace RomanNumerals.Logic
+{
+    public class Converter
+    {
+
+        public string ConvertToRoman(int number)
+        {
+            char[] partes = number.ToString().ToCharArray();
+            Array.Reverse(partes);
+            int potencia = 0;
+            StringBuilder stbRoman = new StringBuilder();
+
+            foreach(char c in partes) 
+            {
+                int part = int.Parse(c.ToString()) * (int)Math.Pow(10, potencia);
+                if (part > 0)
+                    stbRoman.Insert(0, getRomanDigit(part));
+                potencia++;
+            }
+            return stbRoman.ToString();
+        }
+
+        string getRomanDigit(int number)
+        {
+
+            string preview = getRomanDigitPreview(number);
+            foreach (ReplacementPattern r in ReplacementPatternCatalog.GetInstance().GetAll())
+                preview = r.Replace(preview);
+
+            return preview;
+        }
+        string getRomanDigitPreview(int number)
+        {
+            RomansCatalog catalog = RomansCatalog.GetInstance();
+            Roman[] romans = catalog.GetAll();
+
+            Roman previous = null;
+            foreach (Roman n in romans)
+                if (number == n)
+                    return n.Letter;
+                else
+                    if (number > n)
+                        previous = n;
+                    else
+                        break;
+
+            return previous.Letter + getRomanDigitPreview(number - previous.Value);
+
+
+
+        }
+
+        public int ConvertToNumber(string roman)
+        {
+            string start = "";
+            string result = roman;
+            while (start != result)
+            {
+                start = result;
+                foreach (ReplacementPattern r in ReplacementPatternCatalog.GetInstance().GetAll())
+                    result = r.ReverseReplace(result);
+            }
+
+            int number = 0;
+            foreach (char c in result)
+                number += RomansCatalog.GetInstance().GetOne(c).Value;
+
+            return number;
+        }
+    }
+}

eltoby/RomanNumerals/RomanNumerals.Logic/Properties/AssemblyInfo.cs

@@ -0,0 +1,35 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("RomanNumerals.Logic")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("RomanNumerals.Logic")]
+[assembly: AssemblyCopyright("Copyright ©  2011")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("2f73563c-5340-428e-9a7d-3716376e7626")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

eltoby/RomanNumerals/RomanNumerals.Logic/RomanNumerals.Logic.csproj

@@ -0,0 +1,57 @@
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.50727</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{A3FCDAB1-31B4-4A60-92D5-F8B63D51229B}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>RomanNumerals.Logic</RootNamespace>
+    <AssemblyName>RomanNumerals.Logic</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Converter.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\RomanNumerals.Data\RomanNumerals.Data.csproj">
+      <Project>{E0E74485-391E-417C-89DD-BC83FCB35168}</Project>
+      <Name>RomanNumerals.Data</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\RomanNumerals.Objects\RomanNumerals.Objects.csproj">
+      <Project>{1A6A329E-C543-4FFC-83EE-CEA7E9D55DBD}</Project>
+      <Name>RomanNumerals.Objects</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>