CTStudyGroup/BOJ
Jun 2025 – Jul 2025
2 Months active
Languages Used
JavaKotlin
Technical Skills
AlgorithmDivide and ConquerRecursionAlgorithm ImplementationBreadth-First SearchBreadth-First Search (BFS)
sanghoon
PROFILE
Sanghoon
Worked on the CTStudyGroup/BOJ repository, delivering three core features over two months focused on algorithmic problem solving and data processing. Developed a recursive 3x3 subdivision algorithm in Java to count paper types in 2D arrays, enhancing reproducibility and efficiency for related problems. Built a modular graph and network algorithm library, implementing bipartite checks, rumor spread simulations, tree counting, and Dijkstra’s shortest path, alongside an optimization suite for tasks like post office location and quadtree image compression. Emphasized clean, maintainable code with clear documentation, leveraging skills in graph theory, recursion, and data structures without releasing separate bug-fix commits.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
10Total
Bugs
0
Commits
10
Features
3
Lines of code
574
Activity Months2
Your Network
9 peopleWork History
July 2025
9 Commits • 2 Features
Jul 1, 2025Summary for 2025-07 (CTStudyGroup/BOJ): Delivered two major feature sets with a clean, modular architecture and a clear focus on business value. Key features delivered: - Graph and Network Algorithm Library: core capabilities including bipartite check, rumor spread simulation, tree counting, and grid-based shortest path (Dijkstra). Commits reflect iterative refinement (e54752..., ff0591..., 77b9b2..., 68ab44...). - Optimization and Data Processing Suite: optimized problem solving and data processing workflows, covering return collection timing, post office location optimization, beer festival preference filtering, PPAP pattern processing, and quadtree image compression. Commits include e30cad9..., 8c269f..., 6a02e18..., 84a749f..., fede2fcd.... Major bugs fixed: - No separate bug-fix only releases this month; bug-related work was incorporated into feature commits and incremental refinements. Overall impact and accomplishments: - Established dual-domain capabilities in a single repo (graph algorithms and optimization/data processing), enabling faster solution delivery for complex problems and ready-to-extend modules for future use. Improved maintainability through modular design and clear commit history. Technologies/skills demonstrated: - Algorithm design and analysis (graphs, network problems, shortest path), optimization techniques, data processing pipelines, quadtrees and image compression, pattern processing. Demonstrated strong moduleization, reusable components, and end-to-end feature delivery.
9 Commits • 2 Features
Jul 1, 2025Summary for 2025-07 (CTStudyGroup/BOJ): Delivered two major feature sets with a clean, modular architecture and a clear focus on business value. Key features delivered: - Graph and Network Algorithm Library: core capabilities including bipartite check, rumor spread simulation, tree counting, and grid-based shortest path (Dijkstra). Commits reflect iterative refinement (e54752..., ff0591..., 77b9b2..., 68ab44...). - Optimization and Data Processing Suite: optimized problem solving and data processing workflows, covering return collection timing, post office location optimization, beer festival preference filtering, PPAP pattern processing, and quadtree image compression. Commits include e30cad9..., 8c269f..., 6a02e18..., 84a749f..., fede2fcd.... Major bugs fixed: - No separate bug-fix only releases this month; bug-related work was incorporated into feature commits and incremental refinements. Overall impact and accomplishments: - Established dual-domain capabilities in a single repo (graph algorithms and optimization/data processing), enabling faster solution delivery for complex problems and ready-to-extend modules for future use. Improved maintainability through modular design and clear commit history. Technologies/skills demonstrated: - Algorithm design and analysis (graphs, network problems, shortest path), optimization techniques, data processing pipelines, quadtrees and image compression, pattern processing. Demonstrated strong moduleization, reusable components, and end-to-end feature delivery.
July 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for CTStudyGroup/BOJ. Focused on delivering a core algorithm feature for problem-solving workflows and establishing a clear commit trail. No major bugs fixed this month. Overall impact: enhanced automated counting of paper types in 2D representations, improving algorithmic problem-solving efficiency and reproducibility.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for CTStudyGroup/BOJ. Focused on delivering a core algorithm feature for problem-solving workflows and establishing a clear commit trail. No major bugs fixed this month. Overall impact: enhanced automated counting of paper types in 2D representations, improving algorithmic problem-solving efficiency and reproducibility.
Activity
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Quality Metrics
Correctness92.0%
Maintainability82.0%
Architecture80.0%
Performance84.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaKotlin
Technical Skills
AlgorithmAlgorithm ImplementationBreadth-First SearchBreadth-First Search (BFS)Data StructuresDijkstra's AlgorithmDivide and ConquerGraph AlgorithmsGraph TheoryGraph TraversalGreedy AlgorithmInput/Output HandlingJavaPriority QueueProblem Solving
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