DaleStudy/leetcode-study
Dec 2024 – Mar 2025
4 Months active
Languages Used
JavaScript
Technical Skills
AlgorithmAlgorithm ImplementationArray ManipulationBit ManipulationCode FormattingCombinatorics
jeehay
PROFILE
Jeehay
Sophie Park developed a comprehensive suite of algorithmic solutions and utilities for the DaleStudy/leetcode-study repository, focusing on data structures, dynamic programming, and graph traversal. She implemented features such as binary tree serialization, Trie-based word search, and optimized dynamic programming routines, using JavaScript to ensure efficient time and space complexity. Her work included robust handling of arrays, linked lists, and binary search trees, with careful attention to code maintainability and correctness. By delivering reusable patterns and maintaining rigorous quality control, Sophie enabled faster prototyping and improved learning outcomes, demonstrating depth in algorithm design and practical problem-solving across diverse technical challenges.
Overall Statistics
Feature vs Bugs
93%Features
Repository Contributions
68Total
Bugs
3
Commits
68
Features
37
Lines of code
3,890
Activity Months4
Your Network
251 people
Work History
March 2025
10 Commits • 4 Features
Mar 1, 2025March 2025 performance summary for DaleStudy/leetcode-study: Delivered a cohesive set of feature work and reliability fixes across tree structures, BSTs, word search, and DP practice, driving tangible business value through storage/transmission readiness, faster query paths, and reusable problem-solving patterns. The work spanned serialization utilities for binary trees, BST optimizations (iterative LCA, kth smallest, validity checks), Trie-based Word Search II, and DP practice suites (counting bits, House Robber II, longest palindromic substring). Each area is supported by dedicated commits to enable traceability and easier maintenance. Overall impact includes improved robustness, performance, and developer productivity, with demonstrated proficiency in core data structures and algorithms.
10 Commits • 4 Features
Mar 1, 2025March 2025 performance summary for DaleStudy/leetcode-study: Delivered a cohesive set of feature work and reliability fixes across tree structures, BSTs, word search, and DP practice, driving tangible business value through storage/transmission readiness, faster query paths, and reusable problem-solving patterns. The work spanned serialization utilities for binary trees, BST optimizations (iterative LCA, kth smallest, validity checks), Trie-based Word Search II, and DP practice suites (counting bits, House Robber II, longest palindromic substring). Each area is supported by dedicated commits to enable traceability and easier maintenance. Overall impact includes improved robustness, performance, and developer productivity, with demonstrated proficiency in core data structures and algorithms.
March 2025
February 2025
19 Commits • 16 Features
Feb 1, 2025February 2025: Delivered a robust set of algorithmic solutions across lists, arrays, trees, and graphs in DaleStudy/leetcode-study. Emphasized reliability, performance, and maintainability with clean commit traces and consistent patterns across problems.
February 2025
19 Commits • 16 Features
Feb 1, 2025February 2025: Delivered a robust set of algorithmic solutions across lists, arrays, trees, and graphs in DaleStudy/leetcode-study. Emphasized reliability, performance, and maintainability with clean commit traces and consistent patterns across problems.
January 2025
23 Commits • 7 Features
Jan 1, 2025January 2025 was a focused delivery month for DaleStudy/leetcode-study, expanding the solution library across strings, DP and scheduling, graphs/matrices, data structures, arrays, and advanced batch 2 topics. Delivered a broad suite of algorithms with 23 commits, improving student readiness and enabling reusable patterns in the codebase. A bug fix reestablished the baseline approach to prevent drift and facilitate further iteration.
23 Commits • 7 Features
Jan 1, 2025January 2025 was a focused delivery month for DaleStudy/leetcode-study, expanding the solution library across strings, DP and scheduling, graphs/matrices, data structures, arrays, and advanced batch 2 topics. Delivered a broad suite of algorithms with 23 commits, improving student readiness and enabling reusable patterns in the codebase. A bug fix reestablished the baseline approach to prevent drift and facilitate further iteration.
January 2025
December 2024
16 Commits • 10 Features
Dec 1, 2024December 2024 — DaleStudy/leetcode-study: Delivered a broad set of efficient algorithm implementations across strings, DP, arrays, and linked lists, with careful attention to time and space complexity (e.g., House Robber DP O(n) time / O(1) space, Kadane’s O(n), Two Sum O(n), 3Sum with sorting and two-pointers). Addressed quality and correctness by reverting an attempted valid-anagram addition to ensure no incorrect behavior, and maintained code hygiene with formatting fixes. Overall impact: a more capable, reliable practice resource enabling faster prototyping and improved learning outcomes; demonstrated strong problem-solving skills and code quality.
December 2024
16 Commits • 10 Features
Dec 1, 2024December 2024 — DaleStudy/leetcode-study: Delivered a broad set of efficient algorithm implementations across strings, DP, arrays, and linked lists, with careful attention to time and space complexity (e.g., House Robber DP O(n) time / O(1) space, Kadane’s O(n), Two Sum O(n), 3Sum with sorting and two-pointers). Addressed quality and correctness by reverting an attempted valid-anagram addition to ensure no incorrect behavior, and maintained code hygiene with formatting fixes. Overall impact: a more capable, reliable practice resource enabling faster prototyping and improved learning outcomes; demonstrated strong problem-solving skills and code quality.
Activity
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Quality Metrics
Correctness98.0%
Maintainability92.4%
Architecture92.4%
Performance92.2%
AI Usage23.8%
Skills & Technologies
Programming Languages
JavaScript
Technical Skills
AlgorithmAlgorithm ImplementationAlgorithmsArray ManipulationBacktrackingBinary SearchBinary Search TreeBinary Search TreesBit ManipulationCode FormattingCode StyleCombinatoricsData StructuresDepth First SearchDepth First Search (DFS)
Repositories Contributed To
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