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김동휘

PROFILE

김동휘

Over a two-month period, contributed to the ssafy16codingteststudy/1st_algorithm repository by developing a comprehensive suite of algorithmic solutions and data processing features. Focused on building reusable Java and SQL modules for competitive programming and analytics, the work included dynamic programming, graph algorithms such as Floyd-Warshall, and advanced data structure implementations like segment trees. Delivered features addressing range queries, pattern matching, file merging, and game logic, while also implementing SQL-based data aggregation for sales analytics. Emphasized performance optimization, code reuse, and robust problem-solving strategies, resulting in fourteen new features that enhanced the repository’s readiness for technical interviews and coding challenges.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

24Total
Bugs
0
Commits
24
Features
14
Lines of code
1,859
Activity Months2

Work History

May 2025

5 Commits • 5 Features

May 1, 2025

May 2025 performance summary for ssafy16codingteststudy/1st_algorithm: Delivered five algorithm-focused features, strengthening problem-solving capabilities, analytics readiness, and optimization. No critical bugs reported in this period. Technologies demonstrated include Java, SQL, dynamic programming, graph algorithms (Floyd-Warshall), and modulo arithmetic.

April 2025

19 Commits • 9 Features

Apr 1, 2025

April 2025 performance summary for ssafy16codingteststudy/1st_algorithm. Delivered a broad, performance-focused algorithmic problem-solving library across data-structure and algorithm categories, prioritizing reusable solutions and scalable patterns for interview prep and competitive programming. Emphasis areas included segment-tree based range queries, tree algorithms, pattern matching, file merging, two-pointers, DP constraints, and batch problem solutions. Key outcomes include robust min/max range query implementations, expanded topic coverage to Tree Coloring, String Matching, File Merging, and DP/Attendance/Naming problems, plus the addition of six BOJ problems for rapid reuse. These contributions improve runtime efficiency, code reuse, and overall team readiness for fast-paced coding tasks.

Activity

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Quality Metrics

Correctness94.2%
Maintainability80.8%
Architecture81.8%
Performance90.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

JavaSQL

Technical Skills

AlgorithmAlgorithm ImplementationBacktrackingBit ManipulationBreadth-First Search (BFS)Chessboard ProblemsData AggregationData StructuresDatabaseDijkstra's AlgorithmDynamic ProgrammingFloyd-Warshall AlgorithmGame LogicGraph TheoryGraph Traversal

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

ssafy16codingteststudy/1st_algorithm

Apr 2025 May 2025
2 Months active

Languages Used

JavaSQL

Technical Skills

AlgorithmAlgorithm ImplementationBacktrackingBit ManipulationBreadth-First Search (BFS)Chessboard Problems