DaleStudy/leetcode-study
Mar 2025 – May 2025
3 Months active
Languages Used
Java
Technical Skills
AlgorithmData StructuresHashMapArray ManipulationBacktrackingBit Manipulation
Sangmin
PROFILE
Sangmin
Over a three-month period, Seungmin Min contributed a suite of algorithmic solutions to the DaleStudy/leetcode-study repository, focusing on core data structure and dynamic programming challenges. He implemented efficient Java algorithms for problems such as Two Sum, Top K Frequent Elements, and Best Time to Buy and Sell Stock, leveraging HashMap, HashSet, and Java Streams to optimize performance and code clarity. His work included enhancements to array manipulation modules, recursive depth-first search for word search problems, and dynamic programming for tasks like House Robber and Climbing Stairs. Seungmin maintained high code quality through clear documentation and consistent formatting practices.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
19Total
Bugs
2
Commits
19
Features
14
Lines of code
296
Activity Months3
Your Network
263 people
Work History
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 Monthly Summary for DaleStudy/leetcode-study focused on delivering a core algorithm solution and maintaining code quality.
1 Commits • 1 Features
May 1, 2025May 2025 Monthly Summary for DaleStudy/leetcode-study focused on delivering a core algorithm solution and maintaining code quality.
May 2025
April 2025
16 Commits • 12 Features
Apr 1, 2025April 2025 performance for DaleStudy/leetcode-study: Delivered a robust suite of algorithmic solutions across classic LeetCode problems and implemented critical quality improvements. Key features added include Top K Frequent Elements (HashMap + Java Streams), Longest Consecutive Sequence (HashSet for O(n)), House Robber DP with edge-case handling, Product of Array Except Self (prefix/suffix two-pass), Valid Palindrome, Valid Anagram, Climbing Stairs (memoized), Word Search (DFS), Merge Two Sorted Lists, Maximum Depth of Binary Tree, Find Minimum in Rotated Sorted Array, and Count Set Bits. Bug fixes include Contains Duplicate efficiency improvement and code formatting consistency across Java files. Impact: broadened problem-solving coverage, improved runtime performance, and raised code quality, enabling faster iteration and stronger learning resources. Skills demonstrated: Java, data structures (HashMap, HashSet), DP, DFS, multi-pass algorithms, and code quality practices.
April 2025
16 Commits • 12 Features
Apr 1, 2025April 2025 performance for DaleStudy/leetcode-study: Delivered a robust suite of algorithmic solutions across classic LeetCode problems and implemented critical quality improvements. Key features added include Top K Frequent Elements (HashMap + Java Streams), Longest Consecutive Sequence (HashSet for O(n)), House Robber DP with edge-case handling, Product of Array Except Self (prefix/suffix two-pass), Valid Palindrome, Valid Anagram, Climbing Stairs (memoized), Word Search (DFS), Merge Two Sorted Lists, Maximum Depth of Binary Tree, Find Minimum in Rotated Sorted Array, and Count Set Bits. Bug fixes include Contains Duplicate efficiency improvement and code formatting consistency across Java files. Impact: broadened problem-solving coverage, improved runtime performance, and raised code quality, enabling faster iteration and stronger learning resources. Skills demonstrated: Java, data structures (HashMap, HashSet), DP, DFS, multi-pass algorithms, and code quality practices.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary: Delivered core Java solutions for two fundamental array problems in DaleStudy/leetcode-study, expanding learners' practice coverage and reinforcing data-structure concepts. No major bugs were reported this month. Focused on delivering concise, maintainable code and improving the learning resource quality.
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary: Delivered core Java solutions for two fundamental array problems in DaleStudy/leetcode-study, expanding learners' practice coverage and reinforcing data-structure concepts. No major bugs were reported this month. Focused on delivering concise, maintainable code and improving the learning resource quality.
March 2025
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Quality Metrics
Correctness99.0%
Maintainability98.0%
Architecture94.8%
Performance89.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
AlgorithmArray ManipulationBacktrackingBit ManipulationCode FormattingData StructuresDepth First SearchDynamic ProgrammingHashMapJava StreamsLinked ListsRecursionStreamsString Manipulation
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