DaleStudy/leetcode-study
Nov 2025 – Feb 2026
4 Months active
Languages Used
C++
Technical Skills
C++C++ programmingalgorithm designalgorithm developmentdata structuresproblem solving
ys-han00
PROFILE
Ys-han00
Over four months, this developer expanded the DaleStudy/leetcode-study repository by building a comprehensive suite of algorithmic problem solutions and utilities. Using C++ and focusing on algorithm design and data structures, they implemented core features such as optimized array and string algorithms, dynamic programming solutions, and reusable binary search tree query utilities. Their technical approach emphasized modularity, code readability, and maintainability, consolidating solutions into a centralized practice library to accelerate onboarding and testing. The work addressed a broad range of problem types, from sliding window and graph algorithms to trie and linked list implementations, providing depth and breadth for interview preparation.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
19Total
Bugs
0
Commits
19
Features
9
Lines of code
2,652
Activity Months4
Your Network
251 people
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Focused on delivering core BST query utilities for DaleStudy/leetcode-study, enabling efficient LeetCode-style problem solving. Implemented kth smallest element and lowest common ancestor (LCA) in BST, providing essential query capabilities for problem solving workflows. The work is encapsulated in commit 1daffdbd42c86a3e738bad23235848e785d78cbd with message 'Solutions #249 & #252'.
1 Commits • 1 Features
Feb 1, 2026February 2026: Focused on delivering core BST query utilities for DaleStudy/leetcode-study, enabling efficient LeetCode-style problem solving. Implemented kth smallest element and lowest common ancestor (LCA) in BST, providing essential query capabilities for problem solving workflows. The work is encapsulated in commit 1daffdbd42c86a3e738bad23235848e785d78cbd with message 'Solutions #249 & #252'.
February 2026
January 2026
5 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for DaleStudy/leetcode-study: Delivered a Comprehensive Algorithmic Problem Solutions Suite expanding the library with 23 new problem solutions across graph algorithms, dynamic programming, sliding window techniques, and data structure challenges. This release consolidates five commit groups, enabling broader practice coverage and scalable learning paths. No explicit bug fixes were reported this period; focus was on feature expansion and library enrichment. Impact: strengthens the repository's value for developers preparing for interviews, reduces time-to-practice, and improves maintainability through modular implementations and clear commit messages.
January 2026
5 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for DaleStudy/leetcode-study: Delivered a Comprehensive Algorithmic Problem Solutions Suite expanding the library with 23 new problem solutions across graph algorithms, dynamic programming, sliding window techniques, and data structure challenges. This release consolidates five commit groups, enabling broader practice coverage and scalable learning paths. No explicit bug fixes were reported this period; focus was on feature expansion and library enrichment. Impact: strengthens the repository's value for developers preparing for interviews, reduces time-to-practice, and improves maintainability through modular implementations and clear commit messages.
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for DaleStudy/leetcode-study: Delivered a Core Algorithm Practice Library, creating a centralized collection of algorithm solutions spanning arrays, strings, dynamic programming, graphs, and data structures to accelerate testing and learning. The work included four commits that package Solutions across multiple problem numbers (#221-#283) into a cohesive library, improving onboarding, testing speed, and practice throughput. No major bugs reported; minor maintenance performed to ensure API consistency and documentation.
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for DaleStudy/leetcode-study: Delivered a Core Algorithm Practice Library, creating a centralized collection of algorithm solutions spanning arrays, strings, dynamic programming, graphs, and data structures to accelerate testing and learning. The work included four commits that package Solutions across multiple problem numbers (#221-#283) into a cohesive library, improving onboarding, testing speed, and practice throughput. No major bugs reported; minor maintenance performed to ensure API consistency and documentation.
December 2025
November 2025
9 Commits • 6 Features
Nov 1, 20252025-11 Monthly Summary for DaleStudy/leetcode-study: Delivered a robust set of algorithmic problem solutions and formatting/refactor improvements across the LeetCode study repository. Focused on expanding problem coverage, improving readability, and enabling easier onboarding and future extension. Key outcomes include optimized Contains Duplicate, multiple major problem solutions, and a broad expansion of the problem set.
November 2025
9 Commits • 6 Features
Nov 1, 20252025-11 Monthly Summary for DaleStudy/leetcode-study: Delivered a robust set of algorithmic problem solutions and formatting/refactor improvements across the LeetCode study repository. Focused on expanding problem coverage, improving readability, and enabling easier onboarding and future extension. Key outcomes include optimized Contains Duplicate, multiple major problem solutions, and a broad expansion of the problem set.
Activity
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Quality Metrics
Correctness95.8%
Maintainability81.0%
Architecture81.0%
Performance81.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ programmingalgorithm designalgorithm developmentbinary treesdata structuresdynamic programminglinked listsproblem solvingtrie implementation
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