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Add string.Reverse() #3

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Merged
Tyrrrz merged 3 commits into from
Apr 14, 2026
Merged

Add string.Reverse() #3

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f940ff4
Add string.Reverse() extension method and tests
Copilot Apr 12, 2026
5fa3df0
Update PowerKit/Extensions/StringExtensions.cs
Tyrrrz Apr 12, 2026
dca3116
Update PolyShim to v2.9.0
Copilot Apr 14, 2026
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2 changes: 1 addition & 1 deletion Directory.Packages.props
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
<PackageVersion Include="FluentAssertions" Version="6.12.0" />
<PackageVersion Include="Gress" Version="2.1.1" />
<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageVersion Include="PolyShim" Version="2.8.2" />
<PackageVersion Include="PolyShim" Version="2.9.0" />
<PackageVersion Include="xunit" Version="2.9.2" />
<PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
</ItemGroup>
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10 changes: 10 additions & 0 deletions PowerKit.Tests/StringExtensionsTests.cs
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Expand Up @@ -84,4 +84,14 @@ public void ToSnakeCase_Test()
"hello".ToSnakeCase().Should().Be("hello");
"".ToSnakeCase().Should().Be("");
}

[Fact]
public void Reverse_Test()
{
// Act & assert
"hello".Reverse().Should().Be("olleh");
"abcde".Reverse().Should().Be("edcba");
"a".Reverse().Should().Be("a");
"".Reverse().Should().Be("");
}
}
23 changes: 23 additions & 0 deletions PowerKit/Extensions/StringExtensions.cs
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Expand Up @@ -97,5 +97,28 @@ public string SeparateWords(char separator)
/// Converts the PascalCase string to snake_case (e.g., "FooBar" → "foo_bar").
/// </summary>
public string ToSnakeCase() => str.SeparateWords('_').ToLowerInvariant();

/// <summary>
/// Returns the string with the characters in reverse order.
/// </summary>
public string Reverse()
{
if (str.Length <= 1)
{
return str;
}

return string.Create(
str.Length,
str,
static (chars, source) =>
{
for (var i = 0; i < source.Length; i++)
{
chars[i] = source[source.Length - 1 - i];
}
}
);
}
}
}