v1.7.4 Array Flip

src/Smab.Helpers/GridHelpers/Flip.cs

@@ -0,0 +1,32 @@
+namespace Smab.Helpers;
+public static partial class ArrayHelpers {
+	public static T[,] FlipHorizontally<T>(this T[,] array) {
+		int colsCount = array.ColsCount();
+		int rowsCount = array.RowsCount();
+
+		T[,] result = new T[colsCount, rowsCount];
+
+		for (int row = 0; row < rowsCount; row++) {
+			for (int col = 0; col < colsCount; col++) {
+				result[col, row] = array[colsCount - col - 1, row];
+			}
+		}
+
+		return result;
+	}
+
+	public static T[,] FlipVertically<T>(this T[,] array) {
+		int colsCount = array.ColsCount();
+		int rowsCount = array.RowsCount();
+
+		T[,] result = new T[colsCount, rowsCount];
+
+		for (int row = 0; row < rowsCount; row++) {
+			for (int col = 0; col < colsCount; col++) {
+				result[col, row] = array[col, rowsCount - row - 1];
+			}
+		}
+
+		return result;
+	}
+}

src/Smab.Helpers/Smab.Helpers.csproj

@@ -6,7 +6,7 @@
 	</PropertyGroup>
 	<PropertyGroup>
 		<PackageReleaseNotes>.NET 9.0</PackageReleaseNotes>
-		<VersionPrefix>1.7.3</VersionPrefix>
+		<VersionPrefix>1.7.4</VersionPrefix>
 		<Preview></Preview>
 		<VersionSuffix Condition="'$(Preview)' != '' And '$(BUILD_BUILDNUMBER)' == ''">$(Preview).$([System.DateTime]::get_Now().get_Year())$([System.DateTime]::get_Now().get_Month().ToString("D2"))$([System.DateTime]::get_Now().get_Day().ToString("D2"))-$([System.DateTime]::get_Now().get_Hour().ToString("D2"))$([System.DateTime]::get_Now().get_Minute().ToString("D2"))</VersionSuffix>
 		<VersionSuffix Condition="'$(Preview)' != '' And '$(BUILD_BUILDNUMBER)' != ''">$(Preview).$(BUILD_BUILDNUMBER)</VersionSuffix>

tests/Smab.Helpers.Tests/GridHelperTests/Flip.cs

@@ -0,0 +1,34 @@
+namespace Smab.Helpers.Tests.GridHelperTests;
+public class Flip(ITestOutputHelper testOutputHelper) {
+
+	private static readonly char[,] INPUT_ARRAY = """
+		A.B.1
+		CD..2
+		E.FG.
+		HIJ.3
+		""".Split(Environment.NewLine).To2dArray();
+
+	[Fact]
+	public void Flip_Horizontally() {
+		char[,] array = INPUT_ARRAY.FlipHorizontally();
+		string actual = string.Join(Environment.NewLine, array.AsStrings());
+		actual.ShouldBe("""
+			1.B.A
+			2..DC
+			.GF.E
+			3.JIH
+			""");
+	}
+
+	[Fact]
+	public void Flip_Vertically() {
+		char[,] array = INPUT_ARRAY.FlipVertically();
+		string actual = string.Join(Environment.NewLine, array.AsStrings());
+		actual.ShouldBe("""
+			HIJ.3
+			E.FG.
+			CD..2
+			A.B.1
+			""");
+	}
+}