Add Week 1 solutions - Day 1, 2, 4, 5 and Exercise

week1/my-solutions/README.md

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+# Week 1 Solutions - My Implementation
+
+This directory contains my solutions to the Week 1 assignments without overwriting the original course content.
+
+## Structure
+
+```
+week1/my-solutions/
+├── README.md                           # This file
+├── day1-solution.ipynb               # Day 1 web scraping solution
+├── day2-solution.ipynb               # Day 2 solution (to be completed)
+├── day4-solution.ipynb               # Day 4 solution (to be completed)
+├── day5-solution.ipynb               # Day 5 solution (to be completed)
+└── week1-exercise-solution.ipynb     # Week 1 exercise solution
+```
+
+## Solutions Completed
+
+### ✅ Day 1 Solution (`day1-solution.ipynb`)
+- **Features**: Web scraping with requests and BeautifulSoup
+- **SSL Handling**: Fixed Windows SSL certificate issues
+- **OpenAI Integration**: Website summarization using GPT-4o-mini
+- **Parser**: Uses html.parser to avoid lxml dependency issues
+
+### ✅ Week 1 Exercise Solution (`week1-exercise-solution.ipynb`)
+- **Features**: Technical question answerer using both OpenAI and Ollama
+- **Models**: GPT-4o-mini with streaming + Llama 3.2
+- **Comparison**: Side-by-side response analysis
+- **Functionality**: Can handle any technical programming question
+
+### ✅ Day 2 Solution (`day2-solution.ipynb`)
+- **Features**: Chat Completions API understanding and implementation
+- **OpenAI Integration**: Multiple model testing and comparison
+- **Ollama Integration**: Local model testing with Llama 3.2
+- **Advanced Scraping**: Selenium fallback for JavaScript-heavy sites
+- **Model Agnostic**: Works with both OpenAI and Ollama models
+
+### ✅ Day 4 Solution (`day4-solution.ipynb`)
+- **Features**: Tokenization and text processing techniques
+- **Token Analysis**: Understanding tokenization with tiktoken
+- **Cost Estimation**: Token counting and cost calculation
+- **Text Chunking**: Smart text splitting strategies
+- **Advanced Processing**: Token-aware text processing
+
+### ✅ Day 5 Solution (`day5-solution.ipynb`)
+- **Features**: Business solution - Company brochure generator
+- **Intelligent Selection**: LLM-powered link selection
+- **Content Aggregation**: Multi-page content collection
+- **Professional Output**: Business-ready brochure generation
+- **Style Options**: Professional and humorous brochure styles
+
+## How to Use
+
+1. **Run the solutions**: Open any `.ipynb` file and run the cells
+2. **Modify questions**: Change the `question` variable in the exercise solution
+3. **Test different websites**: Modify URLs in the Day 1 solution
+4. **Compare models**: Use the exercise solution to compare OpenAI vs Ollama responses
+
+## Key Features Implemented
+
+### Day 1 Solution
+- ✅ SSL certificate handling for Windows
+- ✅ Web scraping with error handling
+- ✅ BeautifulSoup with html.parser (no lxml dependency)
+- ✅ OpenAI API integration
+- ✅ Markdown display formatting
+- ✅ Website content summarization
+
+### Week 1 Exercise Solution
+- ✅ OpenAI GPT-4o-mini with streaming
+- ✅ Ollama Llama 3.2 integration
+- ✅ Side-by-side response comparison
+- ✅ Technical question answering
+- ✅ Error handling for both APIs
+
+### Day 2 Solution
+- ✅ Chat Completions API understanding
+- ✅ Multiple model testing and comparison
+- ✅ Ollama local model integration
+- ✅ Advanced web scraping with Selenium
+- ✅ Model-agnostic summarization
+
+### Day 4 Solution
+- ✅ Tokenization with tiktoken library
+- ✅ Token counting and cost estimation
+- ✅ Text chunking strategies
+- ✅ Advanced text processing
+- ✅ Cost optimization techniques
+
+### Day 5 Solution
+- ✅ Intelligent link selection using LLM
+- ✅ Multi-page content aggregation
+- ✅ Professional brochure generation
+- ✅ Business-ready output formatting
+- ✅ Style options (professional/humorous)
+
+## Notes
+
+- All solutions are self-contained and don't modify original course files
+- SSL issues are handled for Windows environments
+- Both OpenAI and Ollama integrations are included
+- Solutions include proper error handling and user feedback
+- Code is well-documented and follows best practices
+
+## Next Steps
+
+1. Complete remaining day solutions (Day 2, 4, 5)
+2. Test all solutions thoroughly
+3. Prepare for PR submission
+4. Document any additional features or improvements