Stack calculator

.github/workflows/dotnet.yml

@@ -0,0 +1,38 @@
+name: Build
+
+on: [push]
+
+jobs:
+  build-Windows:
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: '6.x'
+    - name: Restore
+      run: $slnList = Get-ChildItem $foo.FullName -Recurse -Filter '*.sln'; foreach ($file in $slnList) {nuget restore $file.FullName}
+    - name: Build
+      run: $slnList = Get-ChildItem $foo.FullName -Recurse -Filter '*.sln'; foreach ($file in $slnList) {dotnet build $file.FullName}
+    - name: Test
+      run: $slnList = Get-ChildItem $foo.FullName -Recurse -Filter '*.sln'; foreach ($file in $slnList) {dotnet test $file.FullName}
+
+  build-Ubuntu:
+
+      runs-on: ubuntu-latest
+
+      steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '6.x'
+      - name: Restore
+        run: for f in $(find . -name "*.sln"); do dotnet restore $f; done
+      - name: Build
+        run: for f in $(find . -name "*.sln"); do dotnet build $f; done
+      - name: Test
+        run: for f in $(find . -name "*.sln"); do dotnet test $f; done

Homework2/StackCalculator/StackCalculator.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.32210.238
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StackCalculator", "StackCalculator\StackCalculator.csproj", "{8DBDDAE0-E403-49E6-9223-5AC9BF60294F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "TestStackCalculator\Tests.csproj", "{46FAACC4-DAD8-4735-943E-22F9ADAA23C6}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8DBDDAE0-E403-49E6-9223-5AC9BF60294F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8DBDDAE0-E403-49E6-9223-5AC9BF60294F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8DBDDAE0-E403-49E6-9223-5AC9BF60294F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8DBDDAE0-E403-49E6-9223-5AC9BF60294F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{46FAACC4-DAD8-4735-943E-22F9ADAA23C6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{46FAACC4-DAD8-4735-943E-22F9ADAA23C6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{46FAACC4-DAD8-4735-943E-22F9ADAA23C6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{46FAACC4-DAD8-4735-943E-22F9ADAA23C6}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F3D2B963-4468-436F-A5AE-D78F83C046C7}
+	EndGlobalSection
+EndGlobal

Homework2/StackCalculator/StackCalculator/Calculator.cs

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+namespace StackCalculator;
+
+using Stack;
+
+/// <summary>
+/// A class representing a stack calculator
+/// </summary>
+public class Calculator
+{
+    /// <summary>
+    /// Function for counting expressions in postfix form
+    /// </summary>
+    /// <returns>Expression value</returns>
+    public float CountTheExpressionInPostfixForm(string[] inputString, IStack<float> stack)
+    {
+        for (int i = 0; i < inputString.Length; i++)
+        {
+            if (inputString[i] == "")
+            {
+                continue;
+            }
+
+            if (int.TryParse(inputString[i], out int number))
+            {
+                stack.Push(number);
+                continue;
+            }
+
+            if (stack.NumberOfElements() < 2)
+            {
+                throw new IncorrectExpressionException();
+            }
+
+            float secondNumber;
+            float firstNumber;
+            try
+            {
+                secondNumber = stack.Pop();
+                firstNumber = stack.Pop();
+            }
+            catch (StackIsEmptyException)
+            {
+                throw;
+            }
+
+            switch (inputString[i])
+            {
+                case "+" :
+                {
+                    stack.Push(firstNumber + secondNumber);
+                    break;
+                }
+
+                case "-" :
+                {
+                     stack.Push(firstNumber - secondNumber);
+                     break;
+                }
+
+                case "*" :
+                {
+                     stack.Push(firstNumber * secondNumber);
+                     break;
+                }
+
+                case "/" :
+                {
+                    if (Math.Abs(secondNumber - 0) < 0.0000000000000000000000000001)
+                    {
+                        throw new DivideByZeroException();
+                    }
+                    stack.Push(firstNumber / secondNumber);
+                    break;
+                }
+
+                default :
+                {
+                    throw new InvalidCharacterException();
+                }
+            }
+        }
+
+        if (stack.NumberOfElements() != 1)
+        {
+            throw new IncorrectExpressionException();
+        }
+
+        return stack.Pop();
+    }
+}

Homework2/StackCalculator/StackCalculator/IStack.cs

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+namespace Stack;
+
+/// <summary>
+/// A class representing the stack interface
+/// </summary>
+public interface IStack<T>
+{
+    /// <summary>
+    /// Function for checking the stack for emptiness
+    /// </summary>
+    /// <returns> True - if the stack is empty </returns>
+    public bool IsEmpty();
+
+    /// <summary>
+    /// Function for adding an element to the stack
+    /// </summary>
+    /// <param name="value"> The value to add</param>
+    public void Push(T value);
+
+    /// <summary>
+    /// Function for removing an element from the stack
+    /// </summary>
+    /// <returns> Remote value</returns>
+    public T? Pop();
+
+    /// <summary>
+    /// Function that returns the number of elements in the stack
+    /// </summary>
+    /// <returns>Number of elements in stack</returns>
+    public int NumberOfElements();
+
+    /// <summary>
+    /// Function that returns the top of the stack
+    /// </summary>
+    /// <returns>Top of the stack</returns>
+    public T? TopOfTheStack();
+
+    /// <summary>
+    /// Function for stack printing
+    /// </summary>
+    public void PrintStack();
+
+    /// <summary>
+    /// Function for removing the stack
+    /// </summary>
+    public void ClearStack();
+}

Homework2/StackCalculator/StackCalculator/IncorrectExpressionException.cs

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+namespace StackCalculator;
+
+/// <summary>
+/// A class for creating custom exceptions
+/// </summary>
+public class IncorrectExpressionException : Exception
+{
+    public IncorrectExpressionException() : base() { }
+}

Homework2/StackCalculator/StackCalculator/InvalidCharacterException.cs

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+namespace StackCalculator;
+
+/// <summary>
+/// A class for creating custom exceptions
+/// </summary>
+public class InvalidCharacterException : Exception
+{ 
+    public InvalidCharacterException() : base() { }
+}

Homework2/StackCalculator/StackCalculator/StackCalculator.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Library</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <StartupObject></StartupObject>
+  </PropertyGroup>
+
+</Project>

Homework2/StackCalculator/StackCalculator/StackIsEmptyException.cs

@@ -0,0 +1,9 @@
+namespace Stack;
+
+/// <summary>
+/// A class for creating custom exceptions
+/// </summary>
+public class StackIsEmptyException : Exception
+{
+    public StackIsEmptyException() : base() { }
+}

Homework2/StackCalculator/StackCalculator/StackOnArray.cs

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+namespace Stack;
+
+using System;
+
+/// <summary>
+/// A class representing the stack on arrays
+/// </summary>
+public class StackOnArray<T> : IStack<T>
+{
+    private T[] values;
+    private int numberOfElements;
+
+    public StackOnArray()
+    {
+        values = new T[20];
+    }
+
+    /// <summary>
+    /// Function for checking the stack for emptiness
+    /// </summary>
+    /// <returns> True - if the stack is empty </returns>
+    public bool IsEmpty() => numberOfElements == 0;
+
+    /// <summary>
+    /// Function for adding an element to the stack
+    /// </summary>
+    /// <param name="value"> The value to add</param>
+    public void Push(T value)
+    {
+        if (values != null && numberOfElements == values.Length)
+        {
+            Array.Resize(ref values, values.Length + 20);
+        }
+
+        numberOfElements++;
+        if (values == null)
+        {
+            return;
+        }
+
+        values[numberOfElements - 1] = value;
+    }
+
+    /// <summary>
+    /// Function for removing an element from the stack
+    /// </summary>
+    /// <returns> Remote value</returns>
+    public T Pop()
+    {
+        if (numberOfElements == 0 || values == null)
+        {
+            throw new StackIsEmptyException();
+        }
+
+        T topOfSTack = values[numberOfElements - 1];
+        Array.Clear(values, numberOfElements - 1, 1);
+        numberOfElements--;
+        return topOfSTack;
+    }
+
+    /// <summary>
+    /// Function that returns the top of the stack
+    /// </summary>
+    /// <returns>Top of the stack</returns>
+    public T TopOfTheStack()
+    {
+        if (numberOfElements == 0 || values == null)
+        {
+            throw new StackIsEmptyException();
+        }
+
+        return values[numberOfElements - 1];
+    }
+
+    /// <summary>
+    /// Function that returns the number of elements in the stack
+    /// </summary>
+    /// <returns>Number of elements in stack</returns>
+    public int NumberOfElements() => numberOfElements;
+
+    /// <summary>
+    /// Function for stack printing
+    /// </summary>
+    public void PrintStack()
+    {
+        for (int i = numberOfElements - 1; i >= 0; i--)
+        {
+            if (values != null)
+            {
+                Console.Write($"{values[i]} ");
+            }
+        }
+    }
+
+    /// <summary>
+    /// Function for removing the stack
+    /// </summary>
+    public void ClearStack() => values = new T[20];
+}