DaleStudy/leetcode-study
Dec 2024 – Mar 2025
4 Months active
Languages Used
JavaScript
Technical Skills
AlgorithmAlgorithm ImplementationCode FormattingData StructuresDynamic ProgrammingProblem Solving
jdy8739
PROFILE
Jdy8739
Over four months, JD Yoon developed a comprehensive suite of algorithmic solutions and utilities for the DaleStudy/leetcode-study repository, focusing on core data structures such as arrays, strings, linked lists, and binary trees. Leveraging JavaScript, JD applied techniques like dynamic programming, recursion, and bit manipulation to solve problems ranging from coin change and anagram detection to binary search tree traversal and matrix rotation. The work emphasized clean code practices, including refactoring, formatting, and documentation improvements, which enhanced maintainability and onboarding. JD’s contributions provided a robust, well-tested reference for interview preparation and accelerated future development within the codebase.
Overall Statistics
Feature vs Bugs
93%Features
Repository Contributions
60Total
Bugs
3
Commits
60
Features
37
Lines of code
1,775
Activity Months4
Your Network
1252 people
Work History
March 2025
14 Commits • 6 Features
Mar 1, 20252025-03 Monthly Summary for DaleStudy/leetcode-study: Focused delivery of core algorithms and tree-based utilities with quality improvements, enabling stronger interview preparation and more consistent code quality across modules.
14 Commits • 6 Features
Mar 1, 20252025-03 Monthly Summary for DaleStudy/leetcode-study: Focused delivery of core algorithms and tree-based utilities with quality improvements, enabling stronger interview preparation and more consistent code quality across modules.
March 2025
February 2025
21 Commits • 16 Features
Feb 1, 2025February 2025 monthly summary for DaleStudy/leetcode-study: Delivered a broad set of algorithmic solutions across arrays, strings, linked lists, and trees, expanding interview-prep coverage and reinforcing code quality. Implemented and validated 15 LeetCode-style problems, including minimum window substring, linked list cycle detection, rotated array minima and searches, merge k sorted lists, binary tree maximum path sum, maximum depth of binary tree, and more. Contributed a refactor for Merge Intervals to improve readability and maintainability, and addressed important quality gates with lint fixes and annotated complexity.
February 2025
21 Commits • 16 Features
Feb 1, 2025February 2025 monthly summary for DaleStudy/leetcode-study: Delivered a broad set of algorithmic solutions across arrays, strings, linked lists, and trees, expanding interview-prep coverage and reinforcing code quality. Implemented and validated 15 LeetCode-style problems, including minimum window substring, linked list cycle detection, rotated array minima and searches, merge k sorted lists, binary tree maximum path sum, maximum depth of binary tree, and more. Contributed a refactor for Merge Intervals to improve readability and maintainability, and addressed important quality gates with lint fixes and annotated complexity.
January 2025
21 Commits • 13 Features
Jan 1, 2025January 2025 monthly summary for DaleStudy/leetcode-study: Delivered a comprehensive set of algorithmic solutions across arrays, strings, matrices, and graph data structures, alongside formatting and documentation improvements that enhance readability and maintainability. The work adds a robust reference of solved LeetCode problems, accelerates onboarding for new contributors, and reinforces best practices in code quality and consistency.
21 Commits • 13 Features
Jan 1, 2025January 2025 monthly summary for DaleStudy/leetcode-study: Delivered a comprehensive set of algorithmic solutions across arrays, strings, matrices, and graph data structures, alongside formatting and documentation improvements that enhance readability and maintainability. The work adds a robust reference of solved LeetCode problems, accelerates onboarding for new contributors, and reinforces best practices in code quality and consistency.
January 2025
December 2024
4 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for DaleStudy/leetcode-study: Delivered two core algorithm features and strengthened code quality, contributing to faster iteration and more reliable study tools for learners. Implemented a dynamic programming Coin Change Solver with -1 for impossible amounts and cleaned up legacy coin-change logic. Implemented an efficient Anagram Checker using character frequency counts with O(n) time and space, including supporting utilities. Performed maintenance by removing outdated solutions and applying formatting improvements (newline fix). The work reduces time to solution for common problems and improves codebase maintainability, positioning the repo for scalable extensions.
December 2024
4 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for DaleStudy/leetcode-study: Delivered two core algorithm features and strengthened code quality, contributing to faster iteration and more reliable study tools for learners. Implemented a dynamic programming Coin Change Solver with -1 for impossible amounts and cleaned up legacy coin-change logic. Implemented an efficient Anagram Checker using character frequency counts with O(n) time and space, including supporting utilities. Performed maintenance by removing outdated solutions and applying formatting improvements (newline fix). The work reduces time to solution for common problems and improves codebase maintainability, positioning the repo for scalable extensions.
Activity
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Quality Metrics
Correctness95.2%
Maintainability89.4%
Architecture86.4%
Performance87.4%
AI Usage20.4%
Skills & Technologies
Programming Languages
JavaScript
Technical Skills
AlgorithmAlgorithm AnalysisAlgorithm DesignAlgorithm ImplementationAlgorithmsArray ManipulationBinary SearchBinary Search TreeBinary Search TreesBit ManipulationBreadth First SearchCode FormattingCode RefactoringComment CorrectionData Structures
Repositories Contributed To
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