ssafy16codingteststudy/1st_algorithm
Apr 2025 – May 2025
2 Months active
Languages Used
JavaSQL
Technical Skills
AlgorithmAlgorithmsCompetitive ProgrammingData StructuresDepth First Search (DFS)Dijkstra's Algorithm
오일우
PROFILE
오일우
Over two months, this developer contributed to the ssafy16codingteststudy/1st_algorithm repository by building a reusable algorithmic library focused on graph algorithms, segment trees, and grid traversal utilities. Using Java and SQL, they implemented solutions such as Prim’s minimum spanning tree, disjoint set union for cycle detection and friend networks, and Dijkstra’s algorithm for time-constrained shortest paths. Their work included dynamic programming for bulb brightness optimization, Huffman-like file merging, and stack-based browser history simulation. The developer consolidated core algorithms for interview preparation, emphasizing maintainability and onboarding, and maintained high code quality by delivering thirteen features without introducing or fixing any bugs.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
17Total
Bugs
0
Commits
17
Features
13
Lines of code
1,410
Activity Months2
Your Network
1016 people
Work History
May 2025
2 Commits • 2 Features
May 1, 2025May 2025 monthly summary for ssafy16codingteststudy/1st_algorithm: Delivered significant capabilities in the Algorithmic Problem Solver Library and the Grid Light Path Cycle Lengths Calculator, consolidating core interview-ready algorithms into a reusable codebase. These efforts improve problem-solving speed for interviews and competition preparation, enable rapid onboarding, and reduce future maintenance overhead.
2 Commits • 2 Features
May 1, 2025May 2025 monthly summary for ssafy16codingteststudy/1st_algorithm: Delivered significant capabilities in the Algorithmic Problem Solver Library and the Grid Light Path Cycle Lengths Calculator, consolidating core interview-ready algorithms into a reusable codebase. These efforts improve problem-solving speed for interviews and competition preparation, enable rapid onboarding, and reduce future maintenance overhead.
May 2025
April 2025
15 Commits • 11 Features
Apr 1, 2025April 2025 performance summary for ssafy16codingteststudy/1st_algorithm. Delivered a broad, reusable algorithmic library across graph, array queries, and path optimization problems, enabling faster problem solving and scalable solutions. Notable outcomes include: Graph Algorithms Library with Prim's MST and DSU utilities powering DSU-based cycle detection (BOJ20040) and friend networks (BOJ4195) (commits: d53495cc0c2a91217f32bca45294e9d8e602e0f1; de4b18ee0b5e80c49064ec3188506a8a8877d26d; 409195ea94590e0e06c9c3db4c22d73c30de847f; 671c19d3c1ef6438ab0067b9882648e391f1f8b6). - Segment Tree Utilities for range min/max queries and parity counting with updates (commits: a74895f6224212ee2bb030570a263b748072b5ab; 2149582ba7607712f7f6c242b2d6264e821b0313). - DFS-based Tree Coloring to minimize color changes in a tree (commit: 1158e848507f7d80c640d9cdd78bdc3bc5a88786). - Kadane-based bulb brightness flipping and Huffman-like file merging for efficient data processing (commits: 04caecaea100d241008f71708fc23d7f2ac0726f; ab81d01a328e5cbd8b8041899e0e8f0f3f667aab). - Time-Constrained Shortest Path with Dijkstra for time/cost optimization (commit: ad2e00b012dd796d2f0b95e6d911391999a72ef3). - Minor quality improvement: naming consistency fix (BOJ25289) (commit: fbc95f3b6eed4bebe9489ddf601eb4d591d2a741).
April 2025
15 Commits • 11 Features
Apr 1, 2025April 2025 performance summary for ssafy16codingteststudy/1st_algorithm. Delivered a broad, reusable algorithmic library across graph, array queries, and path optimization problems, enabling faster problem solving and scalable solutions. Notable outcomes include: Graph Algorithms Library with Prim's MST and DSU utilities powering DSU-based cycle detection (BOJ20040) and friend networks (BOJ4195) (commits: d53495cc0c2a91217f32bca45294e9d8e602e0f1; de4b18ee0b5e80c49064ec3188506a8a8877d26d; 409195ea94590e0e06c9c3db4c22d73c30de847f; 671c19d3c1ef6438ab0067b9882648e391f1f8b6). - Segment Tree Utilities for range min/max queries and parity counting with updates (commits: a74895f6224212ee2bb030570a263b748072b5ab; 2149582ba7607712f7f6c242b2d6264e821b0313). - DFS-based Tree Coloring to minimize color changes in a tree (commit: 1158e848507f7d80c640d9cdd78bdc3bc5a88786). - Kadane-based bulb brightness flipping and Huffman-like file merging for efficient data processing (commits: 04caecaea100d241008f71708fc23d7f2ac0726f; ab81d01a328e5cbd8b8041899e0e8f0f3f667aab). - Time-Constrained Shortest Path with Dijkstra for time/cost optimization (commit: ad2e00b012dd796d2f0b95e6d911391999a72ef3). - Minor quality improvement: naming consistency fix (BOJ25289) (commit: fbc95f3b6eed4bebe9489ddf601eb4d591d2a741).
Activity
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Quality Metrics
Correctness96.6%
Maintainability83.4%
Architecture84.8%
Performance94.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaSQL
Technical Skills
AlgorithmAlgorithmsBacktrackingCompetitive ProgrammingData StructuresDepth First Search (DFS)Dijkstra's AlgorithmDisjoint Set UnionDynamic ProgrammingGraph AlgorithmsGraph TheoryGrid TraversalHuffman CodingJavaKadane's Algorithm
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