JeongEon8/AlgorithmStudyinGumi
Oct 2024 – Feb 2026
16 Months active
Languages Used
JavaMarkdownC++Python
Technical Skills
AlgorithmAlgorithm ImplementationArithmetic OperationsArray ManipulationBinary SearchCompetitive Programming
HwangSeonHyeok
PROFILE
Hwangseonhyeok
JeongEon8 developed and maintained the JeongEon8/AlgorithmStudyinGumi repository, delivering a comprehensive suite of algorithmic solutions for competitive programming and interview preparation. Over 16 months, JeongEon8 implemented features spanning dynamic programming, greedy algorithms, and graph traversal, primarily using Java and Python. The work emphasized reusable code patterns, robust input handling, and clear documentation, enabling scalable onboarding and efficient problem-solving. Solutions addressed a wide range of Baekjoon problems, with careful attention to edge cases and maintainability. Through consistent commit practices and structured code organization, JeongEon8 established a reliable reference library that supports both learning and rapid technical assessment.
Overall Statistics
Feature vs Bugs
99%Features
Repository Contributions
208Total
Bugs
1
Commits
208
Features
143
Lines of code
17,797
Activity Months16
Your Network
12 people
Work History
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026 performance summary for JeongEon8/AlgorithmStudyinGumi: Delivered three core features with clear business value and performance enhancements. Major bugs fixed: not explicitly documented in this dataset; improvements stem from feature work and memory/algorithm optimizations. Overall impact: enhanced scalability and decision speed for large datasets and student outcome modeling, aligning with project goals. Technologies/skills demonstrated: priority queue-based memory optimization, greedy algorithms, sorting techniques, feasibility reasoning, and clear commit history.
4 Commits • 3 Features
Feb 1, 2026February 2026 performance summary for JeongEon8/AlgorithmStudyinGumi: Delivered three core features with clear business value and performance enhancements. Major bugs fixed: not explicitly documented in this dataset; improvements stem from feature work and memory/algorithm optimizations. Overall impact: enhanced scalability and decision speed for large datasets and student outcome modeling, aligning with project goals. Technologies/skills demonstrated: priority queue-based memory optimization, greedy algorithms, sorting techniques, feasibility reasoning, and clear commit history.
February 2026
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 Monthly Summary — JeongEon8/AlgorithmStudyinGumi: Delivered two high-impact features using greedy optimization. These efforts improved packing efficiency and puzzle progression, demonstrating strong algorithm design and engineering discipline. No major bugs reported this period. Impact: better resource utilization and user experience, supported by clear commit-level traceability and robust problem-solving skills.
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 Monthly Summary — JeongEon8/AlgorithmStudyinGumi: Delivered two high-impact features using greedy optimization. These efforts improved packing efficiency and puzzle progression, demonstrating strong algorithm design and engineering discipline. No major bugs reported this period. Impact: better resource utilization and user experience, supported by clear commit-level traceability and robust problem-solving skills.
December 2025
12 Commits • 12 Features
Dec 1, 2025Month: 2025-12 — Concise monthly summary for JeongEon8/AlgorithmStudyinGumi. Delivered a broad suite of algorithmic features across topics including game theory, string processing, and data structures, with a strong emphasis on reusable solvers and code quality. No explicit major bug fixes documented in the dataset; focus remained on feature delivery and technical breadth to support future work and interview readiness.
12 Commits • 12 Features
Dec 1, 2025Month: 2025-12 — Concise monthly summary for JeongEon8/AlgorithmStudyinGumi. Delivered a broad suite of algorithmic features across topics including game theory, string processing, and data structures, with a strong emphasis on reusable solvers and code quality. No explicit major bug fixes documented in the dataset; focus remained on feature delivery and technical breadth to support future work and interview readiness.
December 2025
November 2025
21 Commits • 21 Features
Nov 1, 2025Month: 2025-11 — Delivered a substantial set of algorithm solutions in JeongEon8/AlgorithmStudyinGumi, expanding the problem-solving library and enabling faster study cycles. Implemented 21 Baekjoon problems across multiple levels (G5, S1, S4, S5, S3), including representative tasks such as 01_스위치, 02_현명한 나이트, 04_문서 검색, 01_로봇, 04_오셀로 재배치, 01_삭삽 정렬, 03_팔찌 만들기, and 04_점프 점프. Each feature was delivered with a focused, single-commit-per-task approach to preserve traceability and rollback capability.
November 2025
21 Commits • 21 Features
Nov 1, 2025Month: 2025-11 — Delivered a substantial set of algorithm solutions in JeongEon8/AlgorithmStudyinGumi, expanding the problem-solving library and enabling faster study cycles. Implemented 21 Baekjoon problems across multiple levels (G5, S1, S4, S5, S3), including representative tasks such as 01_스위치, 02_현명한 나이트, 04_문서 검색, 01_로봇, 04_오셀로 재배치, 01_삭삽 정렬, 03_팔찌 만들기, and 04_점프 점프. Each feature was delivered with a focused, single-commit-per-task approach to preserve traceability and rollback capability.
October 2025
4 Commits • 4 Features
Oct 1, 2025October 2025 (2025-10) delivered a cohesive set of four end-to-end algorithmic solutions in JeongEon8/AlgorithmStudyinGumi, emphasizing practical problem solving, code quality, and clear documentation. Implementations span energy-cost calculation, workload disparity validation, Minesweeper board generation, and a BFS-based Taekwondo King solver. Each solution focuses on robust input handling, deterministic outputs, and README notes that outline algorithms, complexity, and usage. These contributions strengthen the repository as a learning/reference platform and provide reusable problem-solving patterns that shorten future onboarding and practice cycles.
4 Commits • 4 Features
Oct 1, 2025October 2025 (2025-10) delivered a cohesive set of four end-to-end algorithmic solutions in JeongEon8/AlgorithmStudyinGumi, emphasizing practical problem solving, code quality, and clear documentation. Implementations span energy-cost calculation, workload disparity validation, Minesweeper board generation, and a BFS-based Taekwondo King solver. Each solution focuses on robust input handling, deterministic outputs, and README notes that outline algorithms, complexity, and usage. These contributions strengthen the repository as a learning/reference platform and provide reusable problem-solving patterns that shorten future onboarding and practice cycles.
October 2025
September 2025
20 Commits • 1 Features
Sep 1, 2025Month 2025-09 – JeongEon8/AlgorithmStudyinGumi: Delivered a comprehensive Baekjoon problem solutions library and expanded coverage across DP, BFS, greedy, and grouping. Implemented 25+ new/updated solutions (S1-S5, G4-G5) with a clear, category-based organization. No major bugs reported; minor refactors and naming improvements completed to ensure consistency and maintainability. This work strengthens onboarding, accelerates problem-solving references, and creates a scalable foundation for future expansions.
September 2025
20 Commits • 1 Features
Sep 1, 2025Month 2025-09 – JeongEon8/AlgorithmStudyinGumi: Delivered a comprehensive Baekjoon problem solutions library and expanded coverage across DP, BFS, greedy, and grouping. Implemented 25+ new/updated solutions (S1-S5, G4-G5) with a clear, category-based organization. No major bugs reported; minor refactors and naming improvements completed to ensure consistency and maintainability. This work strengthens onboarding, accelerates problem-solving references, and creates a scalable foundation for future expansions.
August 2025
21 Commits • 11 Features
Aug 1, 2025August 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi: Delivered a comprehensive Baekjoon problem-solving suite across S1–S5 and G5, with 21 commits spanning beginner to advanced problems, plus supporting work that enhances learning and on-boarding. The repo now serves as a scalable reference for algorithm practice and interview prep.
21 Commits • 11 Features
Aug 1, 2025August 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi: Delivered a comprehensive Baekjoon problem-solving suite across S1–S5 and G5, with 21 commits spanning beginner to advanced problems, plus supporting work that enhances learning and on-boarding. The repo now serves as a scalable reference for algorithm practice and interview prep.
August 2025
July 2025
17 Commits • 1 Features
Jul 1, 20252025-07 Monthly Summary — JeongEon8/AlgorithmStudyinGumi Key deliverable: a consolidated Baekjoon Problem Solutions Library in Java, covering algorithmic solutions across topics such as sorting optimizations, prime factorization, BFS/DP path finding, sliding windows, constructive heuristics, and number theory. This library aggregates multiple problem solutions into a single, maintainable repository, enabling faster delivery of algorithmic work and easier onboarding for new contributors. The month focused on delivering breadth, quality, and structural consistency to support scalable future expansion and reuse in production-grade projects.
July 2025
17 Commits • 1 Features
Jul 1, 20252025-07 Monthly Summary — JeongEon8/AlgorithmStudyinGumi Key deliverable: a consolidated Baekjoon Problem Solutions Library in Java, covering algorithmic solutions across topics such as sorting optimizations, prime factorization, BFS/DP path finding, sliding windows, constructive heuristics, and number theory. This library aggregates multiple problem solutions into a single, maintainable repository, enabling faster delivery of algorithmic work and easier onboarding for new contributors. The month focused on delivering breadth, quality, and structural consistency to support scalable future expansion and reuse in production-grade projects.
June 2025
10 Commits • 10 Features
Jun 1, 2025June 2025 performance summary for JeongEon8/AlgorithmStudyinGumi: Delivered 10 algorithmic solutions spanning greedy, dynamic programming, LIS optimization, and mathematical formulas. Key features include Box Blowing (minimum boxes and distribution handling), Midterm Grading (score-based sorting for efficient grading), efficient sum 1..n, and additional problems covering tournament rounds, soldier placement, greedy cake optimization, k-largest selections, permutation-based difference maximization, DP-based flips minimization, and odd-number sequence generation. Implementations are in Java with careful edge-case handling and clear documentation. This work expands the repository into a reusable, interview-prep-friendly library, enabling faster problem solving and robust code quality benchmarks across diverse algorithmic domains.
10 Commits • 10 Features
Jun 1, 2025June 2025 performance summary for JeongEon8/AlgorithmStudyinGumi: Delivered 10 algorithmic solutions spanning greedy, dynamic programming, LIS optimization, and mathematical formulas. Key features include Box Blowing (minimum boxes and distribution handling), Midterm Grading (score-based sorting for efficient grading), efficient sum 1..n, and additional problems covering tournament rounds, soldier placement, greedy cake optimization, k-largest selections, permutation-based difference maximization, DP-based flips minimization, and odd-number sequence generation. Implementations are in Java with careful edge-case handling and clear documentation. This work expands the repository into a reusable, interview-prep-friendly library, enabling faster problem solving and robust code quality benchmarks across diverse algorithmic domains.
June 2025
April 2025
5 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi. Focused on repository maintainability, knowledge consolidation, and expanding problem-solving coverage for algorithm study. Key features delivered: - Codebase study files restructuring (March 2025): Reorganized study files/directories to reflect March study completion; no functional changes. Improves maintainability, onboarding, and future contributions. - Competitive programming problem solutions: Added and updated solutions for Baekjoon problems 26517 "Is it Continuous??", 1402 "A Problem Looks Easy", 25179 "Baskin Robbins~N~Cute~and~Charming~", and a gcd-based problem using Euclidean algorithm; includes README updates for quick reference. Major bugs fixed: - No major bugs fixed this month. Focused on structural improvements and documentation to reduce future defect risk. Overall impact and accomplishments: - Strengthened codebase organization, enabling faster onboarding and easier navigation for contributors. - Expanded problem-solving coverage, reinforcing the repository as a centralized reference for algorithm study. - Clear documentation updates (README) to improve discoverability and reuse of solutions. - Commits demonstrate transparent, incremental progress with explicit change descriptions, facilitating traceability. Technologies/skills demonstrated: - Software project organization and refactoring. - Documentation practices and README maintenance. - Implementation of competitive programming solutions and gcd-based algorithms. - Clear, structured commit messaging for maintainability and review.
April 2025
5 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi. Focused on repository maintainability, knowledge consolidation, and expanding problem-solving coverage for algorithm study. Key features delivered: - Codebase study files restructuring (March 2025): Reorganized study files/directories to reflect March study completion; no functional changes. Improves maintainability, onboarding, and future contributions. - Competitive programming problem solutions: Added and updated solutions for Baekjoon problems 26517 "Is it Continuous??", 1402 "A Problem Looks Easy", 25179 "Baskin Robbins~N~Cute~and~Charming~", and a gcd-based problem using Euclidean algorithm; includes README updates for quick reference. Major bugs fixed: - No major bugs fixed this month. Focused on structural improvements and documentation to reduce future defect risk. Overall impact and accomplishments: - Strengthened codebase organization, enabling faster onboarding and easier navigation for contributors. - Expanded problem-solving coverage, reinforcing the repository as a centralized reference for algorithm study. - Clear documentation updates (README) to improve discoverability and reuse of solutions. - Commits demonstrate transparent, incremental progress with explicit change descriptions, facilitating traceability. Technologies/skills demonstrated: - Software project organization and refactoring. - Documentation practices and README maintenance. - Implementation of competitive programming solutions and gcd-based algorithms. - Clear, structured commit messaging for maintainability and review.
March 2025
15 Commits • 13 Features
Mar 1, 2025Month 2025-03 focused on delivering a cohesive set of algorithmic features across JeongEon8/AlgorithmStudyinGumi, with strong emphasis on reliable problem mappings, performance-aware implementations, and maintainability. Key contributions include implementing 13 feature solutions across Baekjoon-style problems with clear commit traceability, plus repository maintenance to restructure the project for easier onboarding and sustainable development. Highlights include deque-based Card 1, sorting numbers, string transformation and 3D block surface area calculation, BFS path existence checks, binary representation precomputation, and several greedy/DP solutions. A dedicated refactor of directory structure (two commits) improved module boundaries and code organization.
15 Commits • 13 Features
Mar 1, 2025Month 2025-03 focused on delivering a cohesive set of algorithmic features across JeongEon8/AlgorithmStudyinGumi, with strong emphasis on reliable problem mappings, performance-aware implementations, and maintainability. Key contributions include implementing 13 feature solutions across Baekjoon-style problems with clear commit traceability, plus repository maintenance to restructure the project for easier onboarding and sustainable development. Highlights include deque-based Card 1, sorting numbers, string transformation and 3D block surface area calculation, BFS path existence checks, binary representation precomputation, and several greedy/DP solutions. A dedicated refactor of directory structure (two commits) improved module boundaries and code organization.
March 2025
February 2025
13 Commits • 12 Features
Feb 1, 2025February 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi focusing on delivering a broad set of algorithmic features across DP, graph traversal, scheduling, and optimization. Implemented 12 problem solutions with clear commit traces, improving the reusable algorithm library and readiness for production-style commitments.
February 2025
13 Commits • 12 Features
Feb 1, 2025February 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi focusing on delivering a broad set of algorithmic features across DP, graph traversal, scheduling, and optimization. Implemented 12 problem solutions with clear commit traces, improving the reusable algorithm library and readiness for production-style commitments.
January 2025
12 Commits • 12 Features
Jan 1, 2025January 2025 delivered a diverse set of algorithm-focused features across JeongEon8/AlgorithmStudyinGumi, advancing problem-solving capabilities, code quality, and documentation. Highlights include BFS-based pathfinding with tie-breaking, dynamic programming with memoization, and optimized scheduling and pairing strategies. The month emphasizes practical business value through robust solutions and reusable patterns for future problems.
12 Commits • 12 Features
Jan 1, 2025January 2025 delivered a diverse set of algorithm-focused features across JeongEon8/AlgorithmStudyinGumi, advancing problem-solving capabilities, code quality, and documentation. Highlights include BFS-based pathfinding with tie-breaking, dynamic programming with memoization, and optimized scheduling and pairing strategies. The month emphasizes practical business value through robust solutions and reusable patterns for future problems.
January 2025
December 2024
20 Commits • 20 Features
Dec 1, 2024December 2024 performance summary for JeongEon8/AlgorithmStudyinGumi. Delivered 20 feature implementations across diverse algorithmic domains, with emphasis on correctness, performance, and maintainability. Focused on building reusable problem-solving patterns and robust data structures to strengthen overall code quality and problem-solving throughput. Notable contributions span dynamic programming, greedy methods, and advanced data structures, accompanied by documentation to facilitate onboarding and knowledge transfer.
December 2024
20 Commits • 20 Features
Dec 1, 2024December 2024 performance summary for JeongEon8/AlgorithmStudyinGumi. Delivered 20 feature implementations across diverse algorithmic domains, with emphasis on correctness, performance, and maintainability. Focused on building reusable problem-solving patterns and robust data structures to strengthen overall code quality and problem-solving throughput. Notable contributions span dynamic programming, greedy methods, and advanced data structures, accompanied by documentation to facilitate onboarding and knowledge transfer.
November 2024
21 Commits • 8 Features
Nov 1, 2024November 2024 (JeongEon8/AlgorithmStudyinGumi): Implemented batch-based feature grouping for Baekjoon problems, significantly improving organization, traceability, and scalability of practice materials. Delivered 8 batch features covering S4, G4, G3, S5, S1, G5, Silver 2024-11, and Gold 2024-11. Each batch consolidates related problems into cohesive features with explicit commit groupings, enabling faster onboarding, easier review, and reusable solving templates across topics. This work establishes a scalable foundation for ongoing problem-set expansion and automated validation, aligning with the goal of delivering business-ready, maintainable algorithm practice content.
21 Commits • 8 Features
Nov 1, 2024November 2024 (JeongEon8/AlgorithmStudyinGumi): Implemented batch-based feature grouping for Baekjoon problems, significantly improving organization, traceability, and scalability of practice materials. Delivered 8 batch features covering S4, G4, G3, S5, S1, G5, Silver 2024-11, and Gold 2024-11. Each batch consolidates related problems into cohesive features with explicit commit groupings, enabling faster onboarding, easier review, and reusable solving templates across topics. This work establishes a scalable foundation for ongoing problem-set expansion and automated validation, aligning with the goal of delivering business-ready, maintainable algorithm practice content.
November 2024
October 2024
11 Commits • 11 Features
Oct 1, 2024October 2024: Delivered a focused set of algorithmic features across JeongEon8/AlgorithmStudyinGumi with emphasis on correctness, performance, and edge-case robustness. The month showcased scalable techniques (binary search, two-pointer, and DP with memoization) and improvements in code quality and maintainability, enabling faster iteration and higher confidence in solution quality across problem domains.
October 2024
11 Commits • 11 Features
Oct 1, 2024October 2024: Delivered a focused set of algorithmic features across JeongEon8/AlgorithmStudyinGumi with emphasis on correctness, performance, and edge-case robustness. The month showcased scalable techniques (binary search, two-pointer, and DP with memoization) and improvements in code quality and maintainability, enabling faster iteration and higher confidence in solution quality across problem domains.
Activity
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Quality Metrics
Correctness96.8%
Maintainability84.8%
Architecture83.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++JavaMarkdownPython
Technical Skills
0-1 BFS3D Grid TraversalAd hocAlgorithmAlgorithm DesignAlgorithm ImplementationAlgorithm implementationAlgorithmsArithmetic OperationsArray ManipulationBFSBacktrackingBigIntegerBinary SearchBit Manipulation
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