ssafy16codingteststudy/1st_algorithm
Feb 2025 – Apr 2025
3 Months active
Languages Used
Java
Technical Skills
AlgorithmAlgorithmsBreadth-First Search (BFS)Data StructuresDynamic ProgrammingGraph Traversal
안성수
PROFILE
안성수
Over a three-month period, contributed a suite of algorithmic solutions to the ssafy16codingteststudy/1st_algorithm repository, focusing on scalable problem-solving and reusable code. Developed features such as BFS-based tree parent identification, dynamic programming for combinatorial sums, and binary search utilities for efficient lookups and large number handling in Java. Implemented advanced data structures including segment trees with lazy propagation and disjoint set union with path compression, supporting range queries, updates, and cycle detection. Addressed graph-based challenges using Dijkstra’s algorithm and topological sort, while optimizing for performance and maintainability. Emphasized clean, modular Java implementations without recorded bug regressions.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
22Total
Bugs
0
Commits
22
Features
16
Lines of code
1,555
Activity Months3
Your Network
1146 peopleWork History
April 2025
16 Commits • 10 Features
Apr 1, 2025April 2025 performance summary for repository ssafy16codingteststudy/1st_algorithm: Delivered a cohesive set of reusable algorithmic primitives and problem-specific solvers enabling scalable solutions for BOJ challenges and faster delivery of features. Key focus areas included DSU-based problem solver suites, segment-tree utilities for range queries/updates, and topological/graph-based constraint solving, complemented by lazy propagation for range updates and optimized distance computations. These efforts improved runtime efficiency, reduced duplicate logic across problems, and strengthened the technical baseline for future work.
16 Commits • 10 Features
Apr 1, 2025April 2025 performance summary for repository ssafy16codingteststudy/1st_algorithm: Delivered a cohesive set of reusable algorithmic primitives and problem-specific solvers enabling scalable solutions for BOJ challenges and faster delivery of features. Key focus areas included DSU-based problem solver suites, segment-tree utilities for range queries/updates, and topological/graph-based constraint solving, complemented by lazy propagation for range updates and optimized distance computations. These efforts improved runtime efficiency, reduced duplicate logic across problems, and strengthened the technical baseline for future work.
April 2025
March 2025
3 Commits • 3 Features
Mar 1, 2025March 2025 (2025-03): Focused on delivering robust algorithmic features in the 1st_algorithm repository with an emphasis on performance, accuracy, and maintainability. Key outcomes include three binary-search-based features that enhance lookup and scoring workflows, robust handling of large numbers, and stable title mapping under duplicate thresholds. No major bugs explicitly recorded in this period; changes are well-tracked via concise commits aligned with feature goals. Impact includes faster and reliable core utilities, improved code quality, and readiness for broader system integration.
March 2025
3 Commits • 3 Features
Mar 1, 2025March 2025 (2025-03): Focused on delivering robust algorithmic features in the 1st_algorithm repository with an emphasis on performance, accuracy, and maintainability. Key outcomes include three binary-search-based features that enhance lookup and scoring workflows, robust handling of large numbers, and stable title mapping under duplicate thresholds. No major bugs explicitly recorded in this period; changes are well-tracked via concise commits aligned with feature goals. Impact includes faster and reliable core utilities, improved code quality, and readiness for broader system integration.
February 2025
3 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for ssafy16codingteststudy/1st_algorithm: Focused on delivering three algorithmic features with robust, maintainable code. Key features delivered: BFS-based BOJ 11725 to determine tree parent relations; Java-based BOJ 1991 tree traversals (preorder, inorder, postorder); DP solution for BOJ 15988 counting sums with 1, 2, 3 modulo 1,000,000,009.
3 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for ssafy16codingteststudy/1st_algorithm: Focused on delivering three algorithmic features with robust, maintainable code. Key features delivered: BFS-based BOJ 11725 to determine tree parent relations; Java-based BOJ 1991 tree traversals (preorder, inorder, postorder); DP solution for BOJ 15988 counting sums with 1, 2, 3 modulo 1,000,000,009.
February 2025
Activity
Loading activity data...
Quality Metrics
Correctness95.4%
Maintainability78.2%
Architecture80.0%
Performance91.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
AlgorithmAlgorithm ImplementationAlgorithmsBacktrackingBigIntegerBinary SearchBreadth-First Search (BFS)CombinatoricsCompetitive ProgrammingData StructuresDijkstra's AlgorithmDisjoint Set UnionDynamic ProgrammingGraph TheoryGraph Traversal
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline