initial implementation of sorting algorithms

GEMINI.md

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+# Gemini CLI Context for playground-frontend
+
+## Project Overview
+
+This is the frontend of the Playground project, built with Angular 21 and Angular Material. It includes features like a light/dark theme toggle and multi-language support via ngx-translate. The application is a static Single Page Application (SPA) served by NGINX.
+
+**Key Technologies:**
+*   **Frontend Framework:** Angular 21
+*   **UI Components & Theming:** Angular Material
+*   **Internationalization:** ngx-translate
+*   **Server:** NGINX (for serving the SPA)
+*   **Containerization:** Docker
+*   **CI/CD:** GitHub Actions
+
+## Building and Running
+
+### Local Development
+
+1.  **Install dependencies:**
+    ```bash
+    npm install
+    ```
+2.  **Start development server:**
+    ```bash
+    ng serve --open
+    ```
+    The app will run at `http://localhost:4200`.
+
+### Building for Production
+
+To build the project for production, which creates the optimized static files:
+```bash
+ng build
+```
+
+### Running Tests
+
+To run the unit tests:
+```bash
+ng test
+```
+
+### Linting
+
+To lint the codebase:
+```bash
+ng lint
+```
+
+### Docker
+
+To build and run the application using Docker locally:
+
+1.  **Build Docker image:**
+    ```bash
+    docker build -t playground-frontend:local .
+    ```
+2.  **Run Docker container:**
+    ```bash
+    docker run -p 8080:80 playground-frontend:local
+    ```
+    Then open `http://localhost:8080` in your browser.
+
+## Development Conventions
+
+*   **Language:** TypeScript
+*   **Framework:** Angular
+*   **Styling:** SCSS (based on `styles.scss` and component-specific `.scss` files).
+*   **Linting:** ESLint is configured (see `eslint.config.js` and `package.json` scripts).
+*   **Internationalization:** Uses `ngx-translate` with `en.json` and `de.json` asset files.
+
+## Project Structure (Key Areas)
+
+*   `src/app/`: Contains the main application logic, components, services, and routing.
+*   `src/app/pages/`: Specific pages of the application (e.g., about, algorithms, imprint, projects).
+*   `src/assets/`: Static assets including images, internationalization files (`i18n`), and logos.
+*   `Dockerfile`: Defines the Docker image for the application.
+*   `nginx.conf`: NGINX configuration for serving the SPA.
+*   `.gitea/workflows/`: Contains CI/CD workflows (e.g., `build-Frontend-a.yml`).