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jeroos/c-sharp-onsite-2.md

Created October 30, 2024 04:07
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  1. jeroos created this gist Oct 30, 2024.
    135 changes: 135 additions & 0 deletions c-sharp-onsite-2.md
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    ## Inventory Management System

    ### Objective
    Create a console-based inventory management system for a small store with real-time tracking and alerts.

    ### Technical Requirements

    #### 1. Data Structures
    ```csharp
    class Product {
    public string ProductId { get; set; } // Format: XXX-999
    public string Name { get; set; }
    public int Quantity { get; set; }
    public decimal Price { get; set; }
    public Category Category { get; set; }
    public DateTime LastRestocked { get; set; }
    }

    enum Category {
    Electronics,
    Clothing,
    Food,
    Books
    }
    ```

    #### 2. Required Functionality

    a) **Product Management**
    - Add new products with validation:
    - ProductId: Unique, format XXX-999
    - Name: 3-50 characters
    - Quantity: Non-negative
    - Price: Between $0.01 and $10000.00
    - Category: Must be valid enum value
    - Update existing products
    - Remove products
    - Track last restock date

    b) **Inventory Operations**
    - Stock increase (restock)
    - Stock decrease (sales)
    - Low stock alerts (< 5 items)
    - Out of stock alerts
    - Calculate total inventory value
    - Track product turnover

    c) **Reporting**
    - List all products
    - Filter by:
    - Category
    - Price range
    - Stock level
    - Sort by:
    - Name
    - Quantity
    - Price
    - Last restock date

    d) **Alerts System**
    - Immediate alerts for:
    - Low stock items
    - Out of stock items
    - High value items (>$1000)
    - Daily inventory summary

    #### 3. User Interface Requirements
    - Main menu with numbered options
    - Sub-menus for specific functions
    - Clear success/error messages
    - Confirmation for critical actions
    - Format currency values properly
    - Format dates consistently

    #### 4. Data Validation
    - Prevent duplicate ProductIds
    - Validate quantity changes
    - Verify price updates
    - Check category assignments
    - Validate date entries

    ### Sample Interaction
    ```
    === Inventory Management System ===
    1. View Inventory
    2. Add Product
    3. Update Stock
    4. Generate Reports
    5. View Alerts
    6. Exit
    Enter choice (1-6): 1
    Current Inventory:
    ID Name Qty Price Category Last Restocked
    -----------------------------------------------------------
    ABC-123 Laptop 10 $899.99 Electronics 10/28/2024
    DEF-456 T-Shirt 25 $19.99 Clothing 10/27/2024
    GHI-789 Novel 8 $14.99 Books 10/25/2024
    Low Stock Alert: Novel (8 units)
    Total Inventory Value: $9,499.64
    Enter product ID to view details or 'M' for menu:
    ```

    ### Evaluation Criteria

    #### 1. Code Organization (25%)
    - Class structure
    - Method organization
    - Variable naming
    - Code documentation
    - Implementation efficiency

    #### 2. Data Management (25%)
    - Storage implementation
    - Update handling
    - Search efficiency
    - Sort implementation
    - Alert system

    #### 3. Error Handling (25%)
    - Input validation
    - Exception management
    - Edge cases
    - Recovery procedures
    - User feedback

    #### 4. User Interface (25%)
    - Menu clarity
    - Information display
    - Navigation logic
    - Error messages
    - Overall usability