JeongEon8/AlgorithmStudyinGumi
Aug 2025 – Feb 2026
7 Months active
Languages Used
JavaMarkdown
Technical Skills
AlgorithmAlgorithm ImplementationBacktrackingBreadth-First SearchGraph TheoryGraph Traversal
YSW
PROFILE
Ysw
JeongEon developed and maintained the JeongEon8/AlgorithmStudyinGumi repository, delivering over 59 algorithmic features in seven months focused on competitive programming and problem-solving. He implemented solutions for a wide range of algorithmic challenges, including graph traversal, dynamic programming, and greedy optimization, using Java and leveraging data structures such as stacks, hash maps, and arrays. Each solution was accompanied by clear documentation and README notes detailing algorithmic approach, complexity, and edge-case handling. His work emphasized maintainability, code quality, and reusable patterns, resulting in a robust library that supports interview preparation, educational use, and rapid prototyping of algorithmic solutions.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
66Total
Bugs
0
Commits
66
Features
59
Lines of code
6,368
Activity Months7
Your Network
1013 people
Work History
February 2026
4 Commits • 4 Features
Feb 1, 2026February 2026 monthly summary for JeongEon8/AlgorithmStudyinGumi: Delivered four core features expanding the problem-solving toolkit with efficient algorithms and practical utilities, enabling faster solution iteration and broader coverage of competitive programming patterns. No major bugs reported in scope; focus on robustness across new features. Overall impact includes improved code reuse, standardized approaches, and demonstration of deep algorithmic understanding. Tech stack highlights include bitwise XOR optimization, prime sieving, lexicographic feasibility checks, and sliding window on circular arrays; signatures and commit-level traceability maintained for repository history.
4 Commits • 4 Features
Feb 1, 2026February 2026 monthly summary for JeongEon8/AlgorithmStudyinGumi: Delivered four core features expanding the problem-solving toolkit with efficient algorithms and practical utilities, enabling faster solution iteration and broader coverage of competitive programming patterns. No major bugs reported in scope; focus on robustness across new features. Overall impact includes improved code reuse, standardized approaches, and demonstration of deep algorithmic understanding. Tech stack highlights include bitwise XOR optimization, prime sieving, lexicographic feasibility checks, and sliding window on circular arrays; signatures and commit-level traceability maintained for repository history.
February 2026
January 2026
15 Commits • 15 Features
Jan 1, 2026January 2026 — JeongEon8/AlgorithmStudyinGumi: Delivered a broad, business-value–driven algorithmic feature set and enhanced documentation, expanding problem-solving capabilities, improving maintainability, and providing interview-ready patterns for performance reviews. Highlights span BFS-based path calculations, binary-search optimizations, dynamic programming, greedy approaches, and hashing-based counting across 15 distinct problems. Notable deliverables include user achievements documentation and a suite of scalable solutions across problem domains (see commits): 8c8081ab0032011ea770646258b6c67dc1b2b793, ada9cd5c1a7f2b36844484c0c9fbb62ac3deb62d, b818318e6b2d530793d65cfdb1dc44ed823e4772, 390f92a3df1c01b74d70f057f364aac8cb743ed7, b81ee9f71300f8906cb42701006ff13a2016ffdc, c4ad3b096483e18b9676a2b2ea2bb816385114b0, 948f4d13c2cc389dc6db1b7f40a0c287941b7ebc, 60466b6db0586d8e736928d2e5099ae91c718c10, f3fd7b320b79aeaf28c6678494ae2ab45de474df, 02755181fccabb681e69dba5b2024a97f4292dcf, ba0d067358050b92622e1bc727b515851ec39b3f, 4e2b2e81cebda7e4e1ff98bcb105fa20375a12fe, c448c2e2a263b70b816300c58721eae485d8c5dd, c69eb2a6043039cdb1b198b0e022872767b1f26e, 30a8c9ee4fd8ac156aee005cb641de7e1bbf2df9.
January 2026
15 Commits • 15 Features
Jan 1, 2026January 2026 — JeongEon8/AlgorithmStudyinGumi: Delivered a broad, business-value–driven algorithmic feature set and enhanced documentation, expanding problem-solving capabilities, improving maintainability, and providing interview-ready patterns for performance reviews. Highlights span BFS-based path calculations, binary-search optimizations, dynamic programming, greedy approaches, and hashing-based counting across 15 distinct problems. Notable deliverables include user achievements documentation and a suite of scalable solutions across problem domains (see commits): 8c8081ab0032011ea770646258b6c67dc1b2b793, ada9cd5c1a7f2b36844484c0c9fbb62ac3deb62d, b818318e6b2d530793d65cfdb1dc44ed823e4772, 390f92a3df1c01b74d70f057f364aac8cb743ed7, b81ee9f71300f8906cb42701006ff13a2016ffdc, c4ad3b096483e18b9676a2b2ea2bb816385114b0, 948f4d13c2cc389dc6db1b7f40a0c287941b7ebc, 60466b6db0586d8e736928d2e5099ae91c718c10, f3fd7b320b79aeaf28c6678494ae2ab45de474df, 02755181fccabb681e69dba5b2024a97f4292dcf, ba0d067358050b92622e1bc727b515851ec39b3f, 4e2b2e81cebda7e4e1ff98bcb105fa20375a12fe, c448c2e2a263b70b816300c58721eae485d8c5dd, c69eb2a6043039cdb1b198b0e022872767b1f26e, 30a8c9ee4fd8ac156aee005cb641de7e1bbf2df9.
December 2025
9 Commits • 9 Features
Dec 1, 2025December 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi highlights a focused period of feature delivery across algorithmic problems, with emphasis on correctness, efficiency, and maintainability. Key features delivered extended the repository’s problem-solving repertoire and provided concrete, reusable patterns for future work. No explicit major bug fixes were recorded in the provided work items for this month; the emphasis was on delivering well-implemented solutions and improving code quality.
9 Commits • 9 Features
Dec 1, 2025December 2025 monthly summary for JeongEon8/AlgorithmStudyinGumi highlights a focused period of feature delivery across algorithmic problems, with emphasis on correctness, efficiency, and maintainability. Key features delivered extended the repository’s problem-solving repertoire and provided concrete, reusable patterns for future work. No explicit major bug fixes were recorded in the provided work items for this month; the emphasis was on delivering well-implemented solutions and improving code quality.
December 2025
November 2025
15 Commits • 12 Features
Nov 1, 2025Month: 2025-11 — JeongEon8/AlgorithmStudyinGumi. This month delivered a cohesive set of algorithm-focused features that expand problem-solving capabilities, improve correctness and performance, and demonstrate strong software craftsmanship. Key outcomes include: - BFS-based pathfinding and rumor-spread simulations enabling timing-aware modeling on mazes and social graphs. - Grid navigation solver that outputs directions based on relative target coordinates. - Exponentiation by divide-and-conquer for powers of two to improve performance on large exponents. - Water Jug puzzle solved via Euclidean algorithm to determine feasibility and steps. - Clock angle calculations with median extraction to provide robust time-angle analytics. - Expressible numbers as sum of two distinct numbers using a two-pointer approach to count valid representations. - Stack-based sum with undo support for zero-triggered backtracking. - Greedy approach to maximize the count of consecutive numbers summing to a target S. - Hamming-distance-based meeting place selection to choose a valid meeting point among candidates. - Digit-removal greedy process to zero by removing digits or decrementing. - Voting algorithm for minimum majority actions to determine minimal moves for majority support. - Longest Increasing Subsequence (LIS) of box sizes via dynamic programming. These contributions were implemented with clear commit history for traceability across a single repository. Overall impact: The month broadened the repository’s problem-solving library, enabling faster prototyping, robust correctness, and educational value for training and interviews. The solutions emphasize reliable edge-case handling, performance-oriented approaches, and modular design suitable for reuse in teaching materials or internal tooling. Technologies/skills demonstrated: BFS and graph reasoning; grid-based path planning; divide-and-conquer and fast exponentiation; number theory (GCD/EUCLID) and two-pointer techniques; dynamic programming; greedy strategies; Hamming-distance reasoning; stack data structures; time-based analytics; and testable commit-based code organization.
November 2025
15 Commits • 12 Features
Nov 1, 2025Month: 2025-11 — JeongEon8/AlgorithmStudyinGumi. This month delivered a cohesive set of algorithm-focused features that expand problem-solving capabilities, improve correctness and performance, and demonstrate strong software craftsmanship. Key outcomes include: - BFS-based pathfinding and rumor-spread simulations enabling timing-aware modeling on mazes and social graphs. - Grid navigation solver that outputs directions based on relative target coordinates. - Exponentiation by divide-and-conquer for powers of two to improve performance on large exponents. - Water Jug puzzle solved via Euclidean algorithm to determine feasibility and steps. - Clock angle calculations with median extraction to provide robust time-angle analytics. - Expressible numbers as sum of two distinct numbers using a two-pointer approach to count valid representations. - Stack-based sum with undo support for zero-triggered backtracking. - Greedy approach to maximize the count of consecutive numbers summing to a target S. - Hamming-distance-based meeting place selection to choose a valid meeting point among candidates. - Digit-removal greedy process to zero by removing digits or decrementing. - Voting algorithm for minimum majority actions to determine minimal moves for majority support. - Longest Increasing Subsequence (LIS) of box sizes via dynamic programming. These contributions were implemented with clear commit history for traceability across a single repository. Overall impact: The month broadened the repository’s problem-solving library, enabling faster prototyping, robust correctness, and educational value for training and interviews. The solutions emphasize reliable edge-case handling, performance-oriented approaches, and modular design suitable for reuse in teaching materials or internal tooling. Technologies/skills demonstrated: BFS and graph reasoning; grid-based path planning; divide-and-conquer and fast exponentiation; number theory (GCD/EUCLID) and two-pointer techniques; dynamic programming; greedy strategies; Hamming-distance reasoning; stack data structures; time-based analytics; and testable commit-based code organization.
October 2025
6 Commits • 6 Features
Oct 1, 2025Month 2025-10 — Delivered six algorithm-focused features in JeongEon8/AlgorithmStudyinGumi with clear business value and measurable performance gains. Key features delivered include Twitch Plays VIIIbit Explorer (optimized maximum string formation and path generation using StringBuilder); Gift Check (greedy discounts with cumulative sums to maximize the number of gifts within budget); Energy Drink (sort-based optimization to maximize total energy through iterative combination); String Slicing (binary search paired with a hash set to determine the maximum removable rows while avoiding duplicates); String Exchange (sliding window approach to minimize the number of swaps needed to form a contiguous block of 'a's); Drug Taking (feasibility simulation of sequential drug administrations within given time constraints). No standalone bug fixes were recorded this month; the focus was on feature delivery and algorithmic performance improvements. Technologies/skills demonstrated include Java-like data structures (StringBuilder, hash sets), sorting, greedy strategies, binary search, sliding window, and simulation, reflecting strong problem-solving, code quality, and efficiency improvements. Impact includes faster problem-solving routines, reusable algorithmic patterns, and higher-quality contributions suitable for interview prep and production-ready code.
6 Commits • 6 Features
Oct 1, 2025Month 2025-10 — Delivered six algorithm-focused features in JeongEon8/AlgorithmStudyinGumi with clear business value and measurable performance gains. Key features delivered include Twitch Plays VIIIbit Explorer (optimized maximum string formation and path generation using StringBuilder); Gift Check (greedy discounts with cumulative sums to maximize the number of gifts within budget); Energy Drink (sort-based optimization to maximize total energy through iterative combination); String Slicing (binary search paired with a hash set to determine the maximum removable rows while avoiding duplicates); String Exchange (sliding window approach to minimize the number of swaps needed to form a contiguous block of 'a's); Drug Taking (feasibility simulation of sequential drug administrations within given time constraints). No standalone bug fixes were recorded this month; the focus was on feature delivery and algorithmic performance improvements. Technologies/skills demonstrated include Java-like data structures (StringBuilder, hash sets), sorting, greedy strategies, binary search, sliding window, and simulation, reflecting strong problem-solving, code quality, and efficiency improvements. Impact includes faster problem-solving routines, reusable algorithmic patterns, and higher-quality contributions suitable for interview prep and production-ready code.
October 2025
September 2025
12 Commits • 12 Features
Sep 1, 2025September 2025 performance summary for JeongEon8/AlgorithmStudyinGumi: A month focused on expanding the problem-solving library with robust, well-documented algorithmic solutions across a broad set of BOJ problems. Emphasis on correctness, readability, and maintainability, with strong emphasis on algorithm design patterns and engineering discipline.
September 2025
12 Commits • 12 Features
Sep 1, 2025September 2025 performance summary for JeongEon8/AlgorithmStudyinGumi: A month focused on expanding the problem-solving library with robust, well-documented algorithmic solutions across a broad set of BOJ problems. Emphasis on correctness, readability, and maintainability, with strong emphasis on algorithm design patterns and engineering discipline.
August 2025
5 Commits • 1 Features
Aug 1, 2025August 2025 summary for JeongEon8/AlgorithmStudyinGumi: Delivered a complete Baekjoon Problem Solvers bundle with robust documentation and clean, reusable implementations. This work enhances the repository as a learning/tooling asset, enabling faster problem tackling and showcasing applied algorithmic competency, which supports upskilling and potential reuse in future projects.
5 Commits • 1 Features
Aug 1, 2025August 2025 summary for JeongEon8/AlgorithmStudyinGumi: Delivered a complete Baekjoon Problem Solvers bundle with robust documentation and clean, reusable implementations. This work enhances the repository as a learning/tooling asset, enabling faster problem tackling and showcasing applied algorithmic competency, which supports upskilling and potential reuse in future projects.
August 2025
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Quality Metrics
Correctness97.8%
Maintainability88.4%
Architecture88.6%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaMarkdown
Technical Skills
3D GeometryAlgorithmAlgorithm ImplementationArray ManipulationBFSBacktrackingBinary SearchBitmaskingBreadth-First SearchBrute ForceCumulative SumData StructuresDynamic ProgrammingGraph TheoryGraph Traversal
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