Add week 1 solution for Emenike

01-Substitution/01-simple-caesar/EmenikeAndPaul/.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# DNX
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
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+*.pch
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+*.pgc
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+.builds
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+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
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+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
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+
+# Visual Studio profiler
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+*.sap
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
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+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
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+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
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+DocProject/Help/*.HxT
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+
+# Click-Once directory
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+# Publish Web Output
+*.[Pp]ublish.xml
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+# TODO: Comment the next line if you want to checkin your web deploy settings
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignoreable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
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+# Microsoft Azure Emulator
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+# Others
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+node_modules/
+orleans.codegen.cs
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
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+# because we have git ;-)
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+Backup*/
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+# Paket dependency manager
+.paket/paket.exe
+paket-files/
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+# FAKE - F# Make
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+
+# JetBrains Rider
+.idea/
+*.sln.iml

01-Substitution/01-simple-caesar/EmenikeAndPaul/Simple-Caesar/Simple-Caesar.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Simple-Caesar", "Simple-Caesar\Simple-Caesar.csproj", "{4435FD7D-921F-4955-95AC-392A0AEEE7CE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x86 = Debug|x86
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4435FD7D-921F-4955-95AC-392A0AEEE7CE}.Debug|x86.ActiveCfg = Debug|x86
+		{4435FD7D-921F-4955-95AC-392A0AEEE7CE}.Debug|x86.Build.0 = Debug|x86
+		{4435FD7D-921F-4955-95AC-392A0AEEE7CE}.Release|x86.ActiveCfg = Release|x86
+		{4435FD7D-921F-4955-95AC-392A0AEEE7CE}.Release|x86.Build.0 = Release|x86
+	EndGlobalSection
+EndGlobal

01-Substitution/01-simple-caesar/EmenikeAndPaul/Simple-Caesar/Simple-Caesar/Program.cs

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+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace SimpleCaesar
+{
+	class MainClass
+	{
+		static Regex rx = new Regex("[a-z]");
+
+		public static void Main(string[] args)
+		{
+			IEnumerable<char> text = File.ReadAllText("cipher.txt")
+				.ToLower()
+				.Where(c => rx.IsMatch(c.ToString()));
+
+			var countDictionary = new Dictionary<char,int>();
+
+			foreach (char item in text) {
+				if (countDictionary.ContainsKey(item))
+					countDictionary[item]++;
+				else
+					countDictionary[item] = 1;
+			}
+
+			foreach (KeyValuePair<char,int> kvp in countDictionary) {
+				Console.WriteLine("{0} ({1}): {2}", kvp.Key, (int)kvp.Key, kvp.Value);
+			}
+
+			// find the most common letter
+			KeyValuePair<char,int> mostCommon = new KeyValuePair<char, int>('?',0);
+			foreach (KeyValuePair<char,int> current in countDictionary) {
+				if (current.Value > mostCommon.Value)
+					mostCommon = current;
+			}
+
+			Console.WriteLine("Most common was {0} with {1}", mostCommon.Key, mostCommon.Value);
+
+			// work out the shift
+			int shift = mostCommon.Key - 101;
+			Console.WriteLine("The shift was: {0}", shift);
+
+			// reverse the encryption
+			var result = File.ReadAllText("cipher.txt").Select(c => decrypt(c, shift)).ToArray();
+
+			Console.WriteLine(new String(result));
+		}
+
+		private static char decrypt(char c, int shift) {
+			if (rx.IsMatch(c.ToString())) {
+				var result = (char)(c - shift);
+				if (result < 97)
+					result = (char)(result + 26);
+				return result;
+			} else
+				return c;
+		}
+	}
+}

01-Substitution/01-simple-caesar/EmenikeAndPaul/Simple-Caesar/Simple-Caesar/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle("Simple-Caesar")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("pav")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+