04-wubba-lubba-dub-dub, Илья Баюк

course-2021-1/exercises/02-adventure-time/AdventureTime/AdventureTime/Program.cs

@@ -1,9 +1,39 @@
-namespace AdventureTime
+using System;
+
+namespace AdventureTime
 {
     internal class Program
     {
         private static void Main()
         {
+            DateTime dt = Time.WhatTimeIsIt();
+            DateTime udt = Time.WhatTimeIsItInUtc();
+
+            Console.WriteLine(dt);
+            Console.WriteLine(udt);
+
+            // all the same
+            Console.WriteLine(Time.SpecifyKind(dt, DateTimeKind.Utc));
+            Console.WriteLine(Time.SpecifyKind(dt, DateTimeKind.Local));
+            Console.WriteLine(Time.SpecifyKind(dt, DateTimeKind.Unspecified));
+
+            var roundtrip = Time.ToRoundTripFormatString(dt);
+            Console.WriteLine(roundtrip);
+            Console.WriteLine(Time.ParseFromRoundTripFormat(roundtrip));
+
+            Console.WriteLine(Time.AddTenSeconds(dt));
+            Console.WriteLine(Time.AddTenSecondsV2(dt));
+
+            Console.WriteLine(Time.GetHoursBetween(udt, dt));
+            Console.WriteLine(Time.GetTotalMinutesInThreeMonths());
+
+            Console.WriteLine(Time.GetAdventureTimeDurationInMinutes_ver0_Dumb());
+            Console.WriteLine(Time.GetGenderSwappedAdventureTimeDurationInMinutes_ver0_Dumb());
+            Console.WriteLine(Time.GetAdventureTimeDurationInMinutes_ver1_FeelsSmarter());
+            Console.WriteLine(Time.GetAdventureTimeDurationInMinutes_ver3_NodaTime());
+
+            Console.WriteLine(Time.AreEqualBirthdays(dt, udt));
+            Console.WriteLine(Time.AreEqualBirthdays(dt, udt.AddDays(1)));
         }
     }
 }

course-2021-1/exercises/03-boring-vector/BoringVector/BoringVector.Tests/BoringVector.Tests.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
+    <PackageReference Include="coverlet.collector" Version="1.3.0" />
+    <PackageReference Include="xUnit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BoringVector\BoringVector.csproj" />
+  </ItemGroup>
+
+</Project>

course-2021-1/exercises/03-boring-vector/BoringVector/BoringVector.Tests/VectorTest.cs

@@ -0,0 +1,50 @@
+using System;
+using Xunit;
+
+namespace BoringVector.Tests
+{
+    public class VectorTest
+    {
+        [Fact]
+        public void Test_SquareLength()
+        {
+            Vector v = new Vector(3, 4);
+            Assert.Equal(25, v.SquareLength());
+        }
+        [Theory]
+        [InlineData(1, 5)]
+        [InlineData(0, 0)]
+        [InlineData(-1, 1)]
+        public void Test_Add(double x, double y)
+        {
+            Vector v = new Vector(3, 4);
+            Vector u = new Vector(x, y);
+            v.Add(u);
+            Assert.Equal(new Vector(3+x, 4+y).ToString(), v.ToString());
+        }
+        [Theory]
+        [InlineData(5)]
+        [InlineData(0)]
+        [InlineData(-2)]
+        public void Test_Scale(double scale)
+        {
+            Vector v = new Vector(3, 4);
+            v.Scale(scale);
+            Assert.Equal(new Vector(3*scale, 4*scale).ToString(), v.ToString());
+        }
+        [Fact]
+        public void Test_DotProduct()
+        {
+            Vector v = new Vector(3, 4);
+            Vector u = new Vector(1, -1);
+            Assert.Equal(-1, v.DotProduct(u));
+        }
+        [Fact]
+        public void Test_CrossProduct()
+        {
+            Vector v = new Vector(3, 4);
+            Vector u = new Vector(4, -3);
+            Assert.Equal(-25, v.CrossProduct(u));
+        }
+    }
+}

course-2021-1/exercises/03-boring-vector/BoringVector/BoringVector/BoringVector.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp5.0</TargetFramework>
   </PropertyGroup>
 
 </Project>

course-2021-1/exercises/03-boring-vector/BoringVector/BoringVector/Program.cs

@@ -1,4 +1,7 @@
 using System;
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("BoringVector.Tests")]
 
 namespace BoringVector
 {

course-2021-1/exercises/03-boring-vector/BoringVector/BoringVector/VectorExtensions.cs

@@ -1,10 +1,58 @@
-namespace BoringVector
+using System;
+
+namespace BoringVector
 {
+    enum VectorRelation
+    {
+        General,
+        Parallel,
+        Orthogonal
+    }
     /*
         Здесь тебе нужно написать класс с методами-расширениями структуры Vector:
-            - IsZero: проверяет, является ли вектор нулевым, т.е. его координаты близки к нулю (в эпсилон окрестности). За эпсилон здесь и далее берем 1e-6.
+            - IsZero: проверяет, является ли вектор нулевым, т.е. его координаты
+            близки к нулю (в эпсилон окрестности). За эпсилон здесь и далее
+            берем 1e-6.
             - Normalize: нормализует вектор
-            - GetAngleBetween: возвращает угол между двумя векторами в радианах. Примечание: нулевой вектор сонаправлен любому другому.
-            - GetRelation: возвращает значение перечесления VectorRelation(General, Parallel, Orthogonal) - отношение между двумя векторами("общий случай", параллельны, перпендикулярны). Перечисление задавать тоже тебе)
+            - GetAngleBetween: возвращает угол между двумя векторами в радианах.
+            Примечание: нулевой вектор сонаправлен любому другому.
+            - GetRelation: возвращает значение перечесления
+            VectorRelation(General, Parallel, Orthogonal) - отношение между
+            двумя векторами("общий случай", параллельны, перпендикулярны).
+            Перечисление задавать тоже тебе)
     */
+    internal class ExtendedVector : Vector
+    {
+        const double eps = 0.000001;
+        public ExtendedVector(double x, double y) : base(x, y) {}
+        public bool IsZero()
+        {
+            return Math.Abs(x) < eps && Math.Abs(y) < eps;
+        }
+
+        public ExtendedVector Normalize()
+        {
+            double len = Math.Sqrt(SquareLength());
+            x /= len;
+            y /= len;
+            return this;
+        }
+
+        static public double GetAngleBetween(ExtendedVector v, ExtendedVector u)
+        {
+            if (v.IsZero() || u.IsZero()) {
+                return 0;
+            }
+            return Math.Acos(v.Normalize().DotProduct(u.Normalize()));
+        }
+        static public VectorRelation GetRelation(ExtendedVector v, ExtendedVector u)
+        {
+            if (v.CrossProduct(u) == 0) {
+                return VectorRelation.Parallel;
+            } else if (v.DotProduct(u) == 0) {
+                return VectorRelation.Orthogonal;
+            }
+            return VectorRelation.General;
+        }
+    }
 }

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub.Tests/RicksMercilessEncryptorTests.cs

@@ -5,6 +5,76 @@ namespace WubbaLubbaDubDub.Tests
 {
     public class RicksMercilessEncryptorTests
     {
-
+        [Fact]
+        private static void Test_SplitToLines()
+        {
+            string text = "Hello\nWorld";
+            var list = text.SplitToLines();
+            Assert.Equal("Hello", list[0]);
+            Assert.Equal("World", list[1]);
+        }
+        [Fact]
+        private static void Test_SplitToWords()
+        {
+            string text = "Hello World";
+            var list = text.SplitToWords();
+            Assert.Equal("Hello", list[0]);
+            Assert.Equal("World", list[1]);
+        }
+        [Fact]
+        private static void Test_GetLeftHalf()
+        {
+            string text = "Hello World";
+            Assert.Equal("Hello", text.GetLeftHalf());
+        }
+        [Fact]
+        private static void Test_GetRightHalf()
+        {
+            string text = "Hello World";
+            Assert.Equal(" World", text.GetRightHalf());
+        }
+        [Fact]
+        private static void Test_GetRightHalf()
+        {
+            string text = "Hello World";
+            Assert.Equal("He11o World", text.Replace("ll", "11"));
+        }
+        [Fact]
+        private static void Test_CharsToCodes()
+        {
+            string text = "He";
+            Assert.Equal("\\u0048\\u0065", text.CharsToCodes());
+        }
+        [Fact]
+        private static void Test_GetReversed()
+        {
+            string text = "Hello";
+            Assert.Equal("olleH", text.GetReversed());
+        }
+        [Fact]
+        private static void Test_InverseCase()
+        {
+            string text = "Hello";
+            Assert.Equal("hELLO", text.InverseCase());
+        }
+        [Fact]
+        private static void Test_ShiftInc()
+        {
+            string text = "Hello";
+            Assert.Equal("Ifmmp", text.InverseCase());
+        }
+        [Fact]
+        private static void Test_GetUsedObjects()
+        {
+            string str = 
+            @"// comment
+            dead:beef
+            /*
+                Задача на поиграться с регулярками - вся сложность в том, чтобы аккуратно игнорировать комментарии.
+                Экспериментировать онлайн можно, например, здесь: http://regexstorm.net/tester и https://regexr.com/
+            */";
+
+            Assert.Equal(3735928559, str.GetUsedObjects());
+        }
     }
 }

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub.Tests/WubbaLubbaDubDub.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp5.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
@@ -12,4 +12,10 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
   </ItemGroup>
 
+
+  <ItemGroup>
+    <ProjectReference Include="..\WubbaLubbaDubDub/RicksMercilessEncryptor.cs" />
+  </ItemGroup>
+
+
 </Project>

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub/Benchmark.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Text;
+using System.Security.Cryptography;
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Running;
+
+namespace MyBenchmarks
+{
+    public class StringAdd
+    {
+        private const int N = 1000;
+        private readonly string data;
+
+        private readonly StringBuilder stringbuilder = new StringBuilder("");
+
+        public StringAdd()
+        {
+            data = new string('*', N);
+        }
+
+        [Benchmark]
+        public string Join() => string.Join("", data);
+
+        [Benchmark]
+        public string BuilderJoin() => stringbuilder.AppendJoin("", data).ToString();
+
+        [Benchmark]
+        public string Concatenate() => string.Concat(data);
+    }
+
+    public class Program
+    {
+        public static void Main()
+        {
+            var summary = BenchmarkRunner.Run<StringAdd>();
+        }
+    }
+}

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub/BenchmarkDotNet.Artifacts/results/MyBenchmarks.StringAdd-report-github.md

@@ -0,0 +1,15 @@
+``` ini
+
+BenchmarkDotNet=v0.13.0, OS=ubuntu 20.04
+Intel Core i5-8250U CPU 1.60GHz (Kaby Lake R), 1 CPU, 8 logical and 4 physical cores
+.NET SDK=5.0.203
+  [Host]     : .NET 5.0.6 (5.0.621.22011), X64 RyuJIT
+  DefaultJob : .NET 5.0.6 (5.0.621.22011), X64 RyuJIT
+
+
+```
+|      Method |             Mean |             Error |            StdDev |
+|------------ |-----------------:|------------------:|------------------:|
+|        Join |         26.94 ns |          0.526 ns |          0.439 ns |
+| BuilderJoin | 85,051,155.23 ns | 11,071,144.320 ns | 32,643,518.817 ns |
+| Concatenate |         15.47 ns |          2.106 ns |          6.209 ns |

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub/BenchmarkDotNet.Artifacts/results/MyBenchmarks.StringAdd-report.csv

@@ -0,0 +1,4 @@
+Method,Job,AnalyzeLaunchVariance,EvaluateOverhead,MaxAbsoluteError,MaxRelativeError,MinInvokeCount,MinIterationTime,OutlierMode,Affinity,EnvironmentVariables,Jit,Platform,PowerPlanMode,Runtime,AllowVeryLargeObjects,Concurrent,CpuGroups,Force,HeapAffinitizeMask,HeapCount,NoAffinitize,RetainVm,Server,Arguments,BuildConfiguration,Clock,EngineFactory,NuGetReferences,Toolchain,IsMutator,InvocationCount,IterationCount,IterationTime,LaunchCount,MaxIterationCount,MaxWarmupIterationCount,MemoryRandomization,MinIterationCount,MinWarmupIterationCount,RunStrategy,UnrollFactor,WarmupCount,Mean,Error,StdDev
+Join,DefaultJob,False,Default,Default,Default,Default,Default,Default,11111111,Empty,RyuJit,X64,8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c,.NET 5.0,False,True,False,True,Default,Default,False,False,False,Default,Default,Default,Default,Default,Default,Default,1,Default,Default,Default,Default,Default,Default,Default,Default,Default,16,Default,26.94 ns,0.526 ns,0.439 ns
+BuilderJoin,DefaultJob,False,Default,Default,Default,Default,Default,Default,11111111,Empty,RyuJit,X64,8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c,.NET 5.0,False,True,False,True,Default,Default,False,False,False,Default,Default,Default,Default,Default,Default,Default,1,Default,Default,Default,Default,Default,Default,Default,Default,Default,16,Default,"85,051,155.23 ns","11,071,144.320 ns","32,643,518.817 ns"
+Concatenate,DefaultJob,False,Default,Default,Default,Default,Default,Default,11111111,Empty,RyuJit,X64,8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c,.NET 5.0,False,True,False,True,Default,Default,False,False,False,Default,Default,Default,Default,Default,Default,Default,1,Default,Default,Default,Default,Default,Default,Default,Default,Default,16,Default,15.47 ns,2.106 ns,6.209 ns

course-2021-1/exercises/04-wubba-lubba-dub-dub/WubbaLubbaDubDub/WubbaLubbaDubDub/BenchmarkDotNet.Artifacts/results/MyBenchmarks.StringAdd-report.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html lang='en'>
+<head>
+<meta charset='utf-8' />
+<title>MyBenchmarks.StringAdd-20210527-005536</title>
+
+<style type="text/css">
+	table { border-collapse: collapse; display: block; width: 100%; overflow: auto; }
+	td, th { padding: 6px 13px; border: 1px solid #ddd; text-align: right; }
+	tr { background-color: #fff; border-top: 1px solid #ccc; }
+	tr:nth-child(even) { background: #f8f8f8; }
+</style>
+</head>
+<body>
+<pre><code>
+BenchmarkDotNet=v0.13.0, OS=ubuntu 20.04
+Intel Core i5-8250U CPU 1.60GHz (Kaby Lake R), 1 CPU, 8 logical and 4 physical cores
+.NET SDK=5.0.203
+  [Host]     : .NET 5.0.6 (5.0.621.22011), X64 RyuJIT
+  DefaultJob : .NET 5.0.6 (5.0.621.22011), X64 RyuJIT
+</code></pre>
+<pre><code></code></pre>
+
+<table>
+<thead><tr><th>Method</th><th>      Mean</th><th>      Error</th><th>     StdDev</th>
+</tr>
+</thead><tbody><tr><td>Join</td><td>26.94 ns</td><td>0.526 ns</td><td>0.439 ns</td>
+</tr><tr><td>BuilderJoin</td><td>85,051,155.23 ns</td><td>11,071,144.320 ns</td><td>32,643,518.817 ns</td>
+</tr><tr><td>Concatenate</td><td>15.47 ns</td><td>2.106 ns</td><td>6.209 ns</td>
+</tr></tbody></table>
+</body>
+</html>