Problem-solve-study/code-store
Jan 2025 – Mar 2025
3 Months active
Languages Used
JavaMarkdown
Technical Skills
AlgorithmAlgorithm ImplementationBacktrackingBigIntegerCombinatoricsData Structures
김채일
PROFILE
김채일
Over a three-month period, this developer contributed to the Problem-solve-study/code-store repository by delivering 67 algorithmic solutions and addressing one bug. They focused on implementing and optimizing a wide range of algorithms in Java, applying techniques such as dynamic programming, backtracking, and graph traversal to solve complex Baekjoon Online Judge problems. Their work included targeted refactoring for efficiency, comprehensive documentation updates, and consistent commit practices to ensure maintainability and traceability. By leveraging data structures, algorithm analysis, and problem-solving skills, the developer enhanced code quality and expanded the repository’s solution coverage, supporting future scalability and onboarding for new contributors.
Overall Statistics
Feature vs Bugs
99%Features
Repository Contributions
90Total
Bugs
1
Commits
90
Features
67
Lines of code
4,821
Activity Months3
Your Network
1016 people
Work History
March 2025
42 Commits • 35 Features
Mar 1, 2025March 2025 (2025-03) summary for Problem-solve-study/code-store: Expanded algorithmic solution coverage with 30+ new BOJ problem solutions, including problems such as BOJ 2798, 2468, 16235, 9470, 2579, 1699, 11048, 2195, 2002, 9370, 1141, 25635, 14620, 10819, 25391, 2487, 12852, 13140, 5567, 2110, 1938, 3079, 1891, 17420, 5525, 10597, 5397, 9205, 1213, 3425, 21275, 1726, 30892, 3613, 23048. In addition, targeted refactors were applied to improve efficiency and readability (notably BOJ 1535 불필요한 연산 제거 and BOJ 12852 불필요한 조건문 제거; plus 12852 연산법 변경 및 불필요한 배열 제거), and a documentation fix was completed (README.md typo). These efforts collectively strengthened problem-solving coverage, code quality, and maintainability, with clear traceability to individual commits for each solution.
42 Commits • 35 Features
Mar 1, 2025March 2025 (2025-03) summary for Problem-solve-study/code-store: Expanded algorithmic solution coverage with 30+ new BOJ problem solutions, including problems such as BOJ 2798, 2468, 16235, 9470, 2579, 1699, 11048, 2195, 2002, 9370, 1141, 25635, 14620, 10819, 25391, 2487, 12852, 13140, 5567, 2110, 1938, 3079, 1891, 17420, 5525, 10597, 5397, 9205, 1213, 3425, 21275, 1726, 30892, 3613, 23048. In addition, targeted refactors were applied to improve efficiency and readability (notably BOJ 1535 불필요한 연산 제거 and BOJ 12852 불필요한 조건문 제거; plus 12852 연산법 변경 및 불필요한 배열 제거), and a documentation fix was completed (README.md typo). These efforts collectively strengthened problem-solving coverage, code quality, and maintainability, with clear traceability to individual commits for each solution.
March 2025
February 2025
41 Commits • 25 Features
Feb 1, 2025February 2025 (Month: 2025-02) — Problem-solve-study/code-store: Delivered broad algorithmic solution coverage and significant code-quality improvements. Implemented end-to-end solutions for 25 BOJ problems, including complex cases like BOJ 17070, 17281, 23843, and 6568, with inline comments and focused refactors. Added and updated documentation (e.g., BOJ 16680) to improve readability and onboarding. Maintained strong version-control discipline with clear commit messages and batch problem work for efficient traceability. Overall, the work positioned the repository for scalable growth and faster future contributions, aligning technical delivery with business value.
February 2025
41 Commits • 25 Features
Feb 1, 2025February 2025 (Month: 2025-02) — Problem-solve-study/code-store: Delivered broad algorithmic solution coverage and significant code-quality improvements. Implemented end-to-end solutions for 25 BOJ problems, including complex cases like BOJ 17070, 17281, 23843, and 6568, with inline comments and focused refactors. Added and updated documentation (e.g., BOJ 16680) to improve readability and onboarding. Maintained strong version-control discipline with clear commit messages and batch problem work for efficient traceability. Overall, the work positioned the repository for scalable growth and faster future contributions, aligning technical delivery with business value.
January 2025
7 Commits • 7 Features
Jan 1, 2025January 2025 performance summary for Problem-solve-study/code-store: Delivered seven Java solutions to BOJ problems, implementing robust algorithms with solid input handling and multi-test support. Achievements span backtracking, DP, priority queues, permutation reconstruction, parsing, and vector analysis, with clear commit traceability. Business value: rapid demonstration of algorithmic proficiency, reusable patterns, and reliable problem-solving templates for future challenges.
7 Commits • 7 Features
Jan 1, 2025January 2025 performance summary for Problem-solve-study/code-store: Delivered seven Java solutions to BOJ problems, implementing robust algorithms with solid input handling and multi-test support. Achievements span backtracking, DP, priority queues, permutation reconstruction, parsing, and vector analysis, with clear commit traceability. Business value: rapid demonstration of algorithmic proficiency, reusable patterns, and reliable problem-solving templates for future challenges.
January 2025
Activity
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Quality Metrics
Correctness97.0%
Maintainability81.6%
Architecture78.6%
Performance87.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaMarkdown
Technical Skills
AlgorithmAlgorithm AnalysisAlgorithm DesignAlgorithm ImplementationAlgorithm OptimizationBFSBacktrackingBigIntegerBinary SearchBit ManipulationBitmaskingBreadth-First SearchBreadth-First Search (BFS)Brute ForceCombinatorics
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