diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
new file mode 100644
index 0000000..741386f
--- /dev/null
+++ b/.github/workflows/CI.yml
@@ -0,0 +1,22 @@
+name: CI
+
+on: [push]
+
+jobs:
+ build:
+ runs-on: ${{ matrix.os }}
+ continue-on-error: true
+ strategy:
+ matrix:
+ os: [windows-latest, ubuntu-latest, macOS-latest]
+ steps:
+ - uses: actions/checkout@v2
+ - uses: actions/setup-dotnet@v1
+ with:
+ dotnet-version: '7.x'
+ - name: Build
+ run: $slnInList = Get-ChildItem -Recurse -Filter '*.sln'; foreach ($file in $slnInList) {dotnet build $file.FullName}
+ shell: pwsh
+ - name: Run tests
+ run: $slnInList = Get-ChildItem -Recurse -Filter '*.sln'; foreach ($file in $slnInList) {dotnet test $file.FullName}
+ shell: pwsh
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9221f48
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,430 @@
+.idea
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn. Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+
+
+
+
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: 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
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
\ No newline at end of file
diff --git a/EvenNumbers/EvenNumbers.Tests/EvenNumbers.Tests.fsproj b/EvenNumbers/EvenNumbers.Tests/EvenNumbers.Tests.fsproj
new file mode 100644
index 0000000..ce4307c
--- /dev/null
+++ b/EvenNumbers/EvenNumbers.Tests/EvenNumbers.Tests.fsproj
@@ -0,0 +1,34 @@
+
+
+
+ net7.0
+
+ false
+ false
+ true
+
+
+
+
+
+
+
+
+
+
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+all
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+all
+
+
+
+
+
+
+
+
+
+
diff --git a/EvenNumbers/EvenNumbers.Tests/Program.fs b/EvenNumbers/EvenNumbers.Tests/Program.fs
new file mode 100644
index 0000000..5da7e48
--- /dev/null
+++ b/EvenNumbers/EvenNumbers.Tests/Program.fs
@@ -0,0 +1,5 @@
+module Program =
+
+ []
+ let main _ = 0
+
diff --git a/EvenNumbers/EvenNumbers.Tests/UnitTests.fs b/EvenNumbers/EvenNumbers.Tests/UnitTests.fs
new file mode 100644
index 0000000..9ba8f71
--- /dev/null
+++ b/EvenNumbers/EvenNumbers.Tests/UnitTests.fs
@@ -0,0 +1,35 @@
+module EvenNumbers.Tests
+
+open NUnit.Framework
+open FsUnit
+open EvenNumbers.СountEvenNumbers
+
+let testCases =
+ seq {
+ yield (TestCaseData([1; 2; 3; 4; 5; 6; 7; 8], 4))
+ yield (TestCaseData([-1; -2; -3; -4; -5; -6; -7; -8], 4))
+ }
+
+[]
+let ``Test assert work correctly map`` (list : List, answer : int) =
+ countEvenMap list |> should equal answer
+
+[]
+let ``Test assert work correctly fold`` (list : List, answer : int) =
+ countEvenFold list |> should equal answer
+
+[]
+let ``Test assert work correctly filter`` (list : List, answer : int) =
+ countEvenFilter list |> should equal answer
+
+[]
+let ``Test empty case map`` () =
+ countEvenMap [] |> should equal 0
+
+[]
+let ``Test empty case fold`` () =
+ countEvenFold [] |> should equal 0
+
+[]
+let ``Test empty case filter`` () =
+ countEvenFilter [] |> should equal 0
\ No newline at end of file
diff --git a/EvenNumbers/EvenNumbers.sln b/EvenNumbers/EvenNumbers.sln
new file mode 100644
index 0000000..e15f619
--- /dev/null
+++ b/EvenNumbers/EvenNumbers.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 25.0.1706.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "EvenNumbers", "EvenNumbers\EvenNumbers.fsproj", "{D0381C5F-A1DD-4DAB-AFAE-B7E4C1C33B7D}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "EvenNumbers.Tests", "EvenNumbers.Tests\EvenNumbers.Tests.fsproj", "{95DC3707-D258-41D3-83E7-BD516822A830}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {D0381C5F-A1DD-4DAB-AFAE-B7E4C1C33B7D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {D0381C5F-A1DD-4DAB-AFAE-B7E4C1C33B7D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {D0381C5F-A1DD-4DAB-AFAE-B7E4C1C33B7D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {D0381C5F-A1DD-4DAB-AFAE-B7E4C1C33B7D}.Release|Any CPU.Build.0 = Release|Any CPU
+ {95DC3707-D258-41D3-83E7-BD516822A830}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {95DC3707-D258-41D3-83E7-BD516822A830}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {95DC3707-D258-41D3-83E7-BD516822A830}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {95DC3707-D258-41D3-83E7-BD516822A830}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {E54E73B0-7B55-4584-ACB7-F0FEACD51C7C}
+ EndGlobalSection
+EndGlobal
diff --git a/EvenNumbers/EvenNumbers/EvenNumbers.fs b/EvenNumbers/EvenNumbers/EvenNumbers.fs
new file mode 100644
index 0000000..313e7e0
--- /dev/null
+++ b/EvenNumbers/EvenNumbers/EvenNumbers.fs
@@ -0,0 +1,11 @@
+namespace EvenNumbers
+
+open System
+
+module СountEvenNumbers =
+
+ let countEvenFilter list = list |> Seq.filter (fun x -> x % 2 = 0) |> Seq.length
+
+ let countEvenMap list = list |> Seq.map (fun x -> (1 - Math.Abs(x % 2))) |> Seq.sum
+
+ let countEvenFold list = list |> Seq.fold (fun sum element -> (+) sum <| Math.Abs (element + 1) % 2) 0
\ No newline at end of file
diff --git a/EvenNumbers/EvenNumbers/EvenNumbers.fsproj b/EvenNumbers/EvenNumbers/EvenNumbers.fsproj
new file mode 100644
index 0000000..aefd278
--- /dev/null
+++ b/EvenNumbers/EvenNumbers/EvenNumbers.fsproj
@@ -0,0 +1,31 @@
+
+
+
+ net7.0
+ true
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+ all
+
+
+
+
+
+
+
diff --git a/ExpressionTree/ExpressionTree.Tests/ExpressionTree.Tests.fsproj b/ExpressionTree/ExpressionTree.Tests/ExpressionTree.Tests.fsproj
new file mode 100644
index 0000000..6018871
--- /dev/null
+++ b/ExpressionTree/ExpressionTree.Tests/ExpressionTree.Tests.fsproj
@@ -0,0 +1,32 @@
+
+
+
+ net7.0
+
+ false
+ false
+ true
+
+
+
+
+
+
+
+
+
+
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+all
+
+
+
+
+
+
+
+
+
+
+
diff --git a/ExpressionTree/ExpressionTree.Tests/Program.fs b/ExpressionTree/ExpressionTree.Tests/Program.fs
new file mode 100644
index 0000000..5da7e48
--- /dev/null
+++ b/ExpressionTree/ExpressionTree.Tests/Program.fs
@@ -0,0 +1,5 @@
+module Program =
+
+ []
+ let main _ = 0
+
diff --git a/ExpressionTree/ExpressionTree.Tests/UnitTests.fs b/ExpressionTree/ExpressionTree.Tests/UnitTests.fs
new file mode 100644
index 0000000..8778b0b
--- /dev/null
+++ b/ExpressionTree/ExpressionTree.Tests/UnitTests.fs
@@ -0,0 +1,27 @@
+module ExpressionTree.Tests
+
+open NUnit.Framework
+open FsUnit
+open ExpressionTree
+
+let ``test case zero division`` =
+ seq {
+ TestCaseData(ExpressionTree(Division, ExpressionTree( Addition, ExpressionTree (Multiplication, Leaf (3), Leaf (2)), ExpressionTree (Division, Leaf (6), Leaf (2))), Leaf (0)))
+ }
+
+[]
+let ``test zero division throws division by zero exception``(tree : ExpressionTree) =
+ (fun () -> countTree tree |> ignore) |> should throw typeof
+
+let ``test cases basic`` =
+ seq {
+ TestCaseData(ExpressionTree(Division, Leaf(12), Leaf(6)), 2)
+ TestCaseData(ExpressionTree(Multiplication, Leaf(4), Leaf(3)), 12)
+ TestCaseData(ExpressionTree(Substraction, Leaf(3), Leaf(3)), 0)
+ TestCaseData(ExpressionTree(Addition, Leaf(1), Leaf(0)), 1)
+ TestCaseData(ExpressionTree(Addition, ExpressionTree(Multiplication, ExpressionTree(Substraction, Leaf(3), Leaf(1)), Leaf(2)), ExpressionTree(Division, Leaf(6), Leaf(3))), 6)
+ }
+
+[]
+let ``test case basic`` (tree : ExpressionTree, answer : int)=
+ countTree tree |> should equal answer
\ No newline at end of file
diff --git a/ExpressionTree/ExpressionTree.sln b/ExpressionTree/ExpressionTree.sln
new file mode 100644
index 0000000..f55cd6d
--- /dev/null
+++ b/ExpressionTree/ExpressionTree.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 25.0.1706.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "ExpressionTree", "ExpressionTree\ExpressionTree.fsproj", "{3D37C15A-7905-4E43-AB6B-97766F74CAF5}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "ExpressionTree.Tests", "ExpressionTree.Tests\ExpressionTree.Tests.fsproj", "{DA9431A5-61DE-4BCC-8DC5-B0CFBAAD91EE}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {3D37C15A-7905-4E43-AB6B-97766F74CAF5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {3D37C15A-7905-4E43-AB6B-97766F74CAF5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {3D37C15A-7905-4E43-AB6B-97766F74CAF5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {3D37C15A-7905-4E43-AB6B-97766F74CAF5}.Release|Any CPU.Build.0 = Release|Any CPU
+ {DA9431A5-61DE-4BCC-8DC5-B0CFBAAD91EE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {DA9431A5-61DE-4BCC-8DC5-B0CFBAAD91EE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {DA9431A5-61DE-4BCC-8DC5-B0CFBAAD91EE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {DA9431A5-61DE-4BCC-8DC5-B0CFBAAD91EE}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {165F7EA4-6DBF-437C-AF12-777F25D2ADAC}
+ EndGlobalSection
+EndGlobal
diff --git a/ExpressionTree/ExpressionTree/ExpressionTree.fs b/ExpressionTree/ExpressionTree/ExpressionTree.fs
new file mode 100644
index 0000000..7b97c1c
--- /dev/null
+++ b/ExpressionTree/ExpressionTree/ExpressionTree.fs
@@ -0,0 +1,16 @@
+type Operation = Addition | Substraction | Multiplication | Division
+
+type ExpressionTree =
+ | ExpressionTree of Operation * ExpressionTree * ExpressionTree
+ | Leaf of int
+
+let rec countTree tree =
+ match tree with
+ | Leaf n -> n
+ | ExpressionTree(Addition, l, r) -> countTree l + countTree r
+ | ExpressionTree(Substraction, l, r) -> countTree l - countTree r
+ | ExpressionTree(Multiplication, l, r) -> countTree l * countTree r
+ | ExpressionTree(Division, l, r) ->
+ let right = countTree r
+ if right = 0 then raise (System.DivideByZeroException("DivisionByZero"))
+ else countTree l / right
\ No newline at end of file
diff --git a/ExpressionTree/ExpressionTree/ExpressionTree.fsproj b/ExpressionTree/ExpressionTree/ExpressionTree.fsproj
new file mode 100644
index 0000000..3e582e5
--- /dev/null
+++ b/ExpressionTree/ExpressionTree/ExpressionTree.fsproj
@@ -0,0 +1,12 @@
+
+
+
+ Exe
+ net7.0
+
+
+
+
+
+
+
diff --git a/MapTree/MapTree.Tests/MapTree.Tests.fsproj b/MapTree/MapTree.Tests/MapTree.Tests.fsproj
new file mode 100644
index 0000000..2824147
--- /dev/null
+++ b/MapTree/MapTree.Tests/MapTree.Tests.fsproj
@@ -0,0 +1,32 @@
+
+
+
+ net7.0
+
+ false
+ false
+ true
+
+
+
+
+
+
+
+
+
+
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+all
+
+
+
+
+
+
+
+
+
+
+
diff --git a/MapTree/MapTree.Tests/Program.fs b/MapTree/MapTree.Tests/Program.fs
new file mode 100644
index 0000000..5da7e48
--- /dev/null
+++ b/MapTree/MapTree.Tests/Program.fs
@@ -0,0 +1,5 @@
+module Program =
+
+ []
+ let main _ = 0
+
diff --git a/MapTree/MapTree.Tests/UnitTests.fs b/MapTree/MapTree.Tests/UnitTests.fs
new file mode 100644
index 0000000..845fc2a
--- /dev/null
+++ b/MapTree/MapTree.Tests/UnitTests.fs
@@ -0,0 +1,23 @@
+module MapTree.Tests
+
+open NUnit.Framework
+open FsUnit
+open MapTree.MapTree
+
+let ``test case 1`` =
+ seq {
+ TestCaseData(Tree(4, Tree(2, Leaf(1), Leaf(3)), Tree(6, Leaf(5), Leaf(7))), Tree(5, Tree(3, Leaf(2), Leaf(4)), Tree(7, Leaf(6), Leaf(8))))
+ }
+
+[]
+let ``test 1`` (tree : Tree, answer : Tree) =
+ mapTree tree (fun x -> x + 1) |> should equal answer
+
+let ``test case 2`` =
+ seq {
+ TestCaseData(Tree("a", Tree("b", Leaf("c"), Leaf("d")), Tree("e", Leaf("f"), Leaf("g"))), Tree("aa", Tree("bb", Leaf("cc"), Leaf("dd")), Tree("ee", Leaf("ff"), Leaf("gg"))))
+ }
+
+[]
+let ``test 2`` (tree : Tree, answer : Tree) =
+ mapTree tree (fun x -> x + x) |> should equal answer
\ No newline at end of file
diff --git a/MapTree/MapTree.sln b/MapTree/MapTree.sln
new file mode 100644
index 0000000..96ca238
--- /dev/null
+++ b/MapTree/MapTree.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 25.0.1706.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "MapTree", "MapTree\MapTree.fsproj", "{76981EB5-C155-4DED-B0AB-8EFE117EF173}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "MapTree.Tests", "MapTree.Tests\MapTree.Tests.fsproj", "{F252A996-1D2B-4813-BA3D-B4DDA8D8D3F3}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {76981EB5-C155-4DED-B0AB-8EFE117EF173}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {76981EB5-C155-4DED-B0AB-8EFE117EF173}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {76981EB5-C155-4DED-B0AB-8EFE117EF173}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {76981EB5-C155-4DED-B0AB-8EFE117EF173}.Release|Any CPU.Build.0 = Release|Any CPU
+ {F252A996-1D2B-4813-BA3D-B4DDA8D8D3F3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {F252A996-1D2B-4813-BA3D-B4DDA8D8D3F3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {F252A996-1D2B-4813-BA3D-B4DDA8D8D3F3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {F252A996-1D2B-4813-BA3D-B4DDA8D8D3F3}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {C838D1EB-9164-4E32-8E9F-541CD4873D91}
+ EndGlobalSection
+EndGlobal
diff --git a/MapTree/MapTree/MapTree.fs b/MapTree/MapTree/MapTree.fs
new file mode 100644
index 0000000..aa2307c
--- /dev/null
+++ b/MapTree/MapTree/MapTree.fs
@@ -0,0 +1,14 @@
+namespace MapTree
+
+module MapTree =
+
+ type Tree<'a> =
+ | Tree of 'a * Tree<'a> * Tree<'a>
+ | Leaf of 'a
+
+
+
+ let rec mapTree tree f =
+ match tree with
+ | Tree(x, l, r) -> Tree(f x, mapTree l f, mapTree r f)
+ | Leaf(x) -> Leaf(f x)
\ No newline at end of file
diff --git a/MapTree/MapTree/MapTree.fsproj b/MapTree/MapTree/MapTree.fsproj
new file mode 100644
index 0000000..5d71cde
--- /dev/null
+++ b/MapTree/MapTree/MapTree.fsproj
@@ -0,0 +1,12 @@
+
+
+
+ net7.0
+ true
+
+
+
+
+
+
+
diff --git a/PrimeSequence/PrimeSequence.Tests/PrimeSequence.Tests.fsproj b/PrimeSequence/PrimeSequence.Tests/PrimeSequence.Tests.fsproj
new file mode 100644
index 0000000..a0299fc
--- /dev/null
+++ b/PrimeSequence/PrimeSequence.Tests/PrimeSequence.Tests.fsproj
@@ -0,0 +1,35 @@
+
+
+
+ net7.0
+
+ false
+ false
+ true
+
+
+
+
+
+
+
+
+
+
+
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+all
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/PrimeSequence/PrimeSequence.Tests/Program.fs b/PrimeSequence/PrimeSequence.Tests/Program.fs
new file mode 100644
index 0000000..5da7e48
--- /dev/null
+++ b/PrimeSequence/PrimeSequence.Tests/Program.fs
@@ -0,0 +1,5 @@
+module Program =
+
+ []
+ let main _ = 0
+
diff --git a/PrimeSequence/PrimeSequence.Tests/UnitTests.fs b/PrimeSequence/PrimeSequence.Tests/UnitTests.fs
new file mode 100644
index 0000000..f627aea
--- /dev/null
+++ b/PrimeSequence/PrimeSequence.Tests/UnitTests.fs
@@ -0,0 +1,10 @@
+module PrimeSequence.Tests
+
+open NUnit.Framework
+open FsUnit
+open PrimeSequenceGenerator
+
+[]
+let ``compare first 10 numbers`` () =
+ let correctAnswer = [2; 3; 5; 7; 11; 13; 17; 19; 23; 29]
+ generatePrimes () |> Seq.take 10 |> Seq.toList |> should equal correctAnswer
\ No newline at end of file
diff --git a/PrimeSequence/PrimeSequence.sln b/PrimeSequence/PrimeSequence.sln
new file mode 100644
index 0000000..5f8ea86
--- /dev/null
+++ b/PrimeSequence/PrimeSequence.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 25.0.1706.10
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "PrimeSequence", "PrimeSequence\PrimeSequence.fsproj", "{F23B8FF9-8366-4965-BF60-1B65A2C0CB50}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "PrimeSequence.Tests", "PrimeSequence.Tests\PrimeSequence.Tests.fsproj", "{81AFF2B3-FC48-48E2-9353-C3035EC973FD}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {F23B8FF9-8366-4965-BF60-1B65A2C0CB50}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {F23B8FF9-8366-4965-BF60-1B65A2C0CB50}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {F23B8FF9-8366-4965-BF60-1B65A2C0CB50}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {F23B8FF9-8366-4965-BF60-1B65A2C0CB50}.Release|Any CPU.Build.0 = Release|Any CPU
+ {81AFF2B3-FC48-48E2-9353-C3035EC973FD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {81AFF2B3-FC48-48E2-9353-C3035EC973FD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {81AFF2B3-FC48-48E2-9353-C3035EC973FD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {81AFF2B3-FC48-48E2-9353-C3035EC973FD}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {52449CA0-4A88-4E56-B449-40B6017917C3}
+ EndGlobalSection
+EndGlobal
diff --git a/PrimeSequence/PrimeSequence/PrimeSequence.fs b/PrimeSequence/PrimeSequence/PrimeSequence.fs
new file mode 100644
index 0000000..6a426d6
--- /dev/null
+++ b/PrimeSequence/PrimeSequence/PrimeSequence.fs
@@ -0,0 +1,12 @@
+namespace PrimeSequence
+
+open System
+
+module PrimeSequenceGenerator =
+ let generatePrimes () =
+ let isPrimeNumber n =
+ let bound = n |> float |> Math.Sqrt |> Math.Round |> bigint |> (+) (bigint 1)
+ let rec checkDelimeters delimeter =
+ delimeter >= bound || (n % (int delimeter) <> 0 && checkDelimeters (delimeter + bigint 1))
+ checkDelimeters (bigint 2)
+ seq {yield! Seq.filter (fun number -> isPrimeNumber number) (Seq.initInfinite (fun i -> i + 2))}
\ No newline at end of file
diff --git a/PrimeSequence/PrimeSequence/PrimeSequence.fsproj b/PrimeSequence/PrimeSequence/PrimeSequence.fsproj
new file mode 100644
index 0000000..e21f50f
--- /dev/null
+++ b/PrimeSequence/PrimeSequence/PrimeSequence.fsproj
@@ -0,0 +1,12 @@
+
+
+
+ net7.0
+ true
+
+
+
+
+
+
+