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@Levio-z Levio-z commented Oct 17, 2025

… ensure cross-platform dependency consistency

… ensure cross-platform dependency consistency
…e Element problems with examples and explanations
… add Range Sum Query - Immutable and Backspace String Compare solutions with tests
- Added `MyLinkedList` implementation with methods for adding, retrieving, and deleting nodes.
- Created a `Trie` structure with methods for inserting words and searching for prefixes.
- Included comprehensive documentation and test cases for both data structures.
- Updated `Cargo.toml` to include a new dependency for formatting.
- Added markdown documentation for the linked list and trie implementations.
Levio-z and others added 6 commits January 18, 2026 22:04
- Extract CLI logic into src/cli/ module (commands, handlers, template)
- Refactor fetcher.rs into src/fetcher/ with clear separation of concerns
  - api_models.rs: Private API response structures
  - models.rs: Public domain models
  - transform.rs: Data transformation layer
  - client.rs: HTTP client operations
- Reduce main.rs from 376 to 47 lines (87.5% reduction)
- Improve error handling with Result types
- Replace 24-arm match with HashMap for return type handling
- All tests passing, functionality preserved

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
…rieval

Improvements:
- Fetch algorithm and concurrency problem lists concurrently (parallel)
- Process problems in batches of 50 to control concurrency
- Add progress reporting per batch
- Combine both problem lists before filtering
- Add Clone trait to StatWithStatus, Stat, and Difficulty for batch processing
- Remove unnecessary async blocks and .to_string() comparisons
- Better user feedback with batch progress and total count

Performance benefits:
- Faster initial problem list fetching (parallel instead of sequential)
- Controlled concurrency prevents overwhelming the API
- Better progress visibility for users
- Reduced memory pressure by processing in batches

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Added detailed documentation in claude_doc/ directory:

1. README.md - Project overview and quick navigation
   - Summary of both commits
   - Overall achievements
   - Technical stack
   - Future improvements

2. 01-refactoring-summary.md - Code refactoring details
   - Problems before refactoring
   - Module design and implementation
   - Code quality improvements
   - Verification results
   - 87.5% reduction in main.rs

3. 02-performance-optimization.md - Performance optimization details
   - Performance issues analysis
   - Optimization strategies
   - Concurrency model explanation
   - Performance comparison data
   - 2x speedup in problem list fetching

Documentation includes:
- Detailed code examples
- Before/after comparisons
- Performance metrics
- User experience improvements
- Technical design decisions
- Future optimization suggestions

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Fixed all markdownlint warnings:
- Added language identifiers to code blocks (bash, rust, text)
- Changed bold emphasis to proper headings (##### level)
- Fixed duplicate heading by renaming to unique titles
- Fixed line length issue by breaking long code line
- Ensured proper blank lines around headings and lists

All documentation now passes markdownlint validation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Fixed MD060 table column style warnings by adding proper spacing
around table pipes for consistent formatting.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Replace interactive loop with clap-based argument parsing
- Add clap dependency with derive features to Cargo.toml
- Implement intuitive command structure:
  - Positional argument for problem ID (e.g., lc 01)
  - Named flags: -r/--random, -s/--solve, -a/--all
- Add install.sh script for system-wide installation as 'lc' command
- Add Makefile for common build tasks
- Update README.md with comprehensive installation and usage documentation
- Improve user experience with direct command execution instead of interactive prompts

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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