Add ShellSort implementation in Java#398
Merged
Merged
Conversation
- Implements advanced insertion sort with gap sequences for improved performance - Time Complexity: O(n^3/2) worst case, O(n log n) average case - Space Complexity: O(1) - in-place sorting algorithm - Features two gap sequence implementations: Knuth's and Shell's original - Knuth's sequence: h = 3h + 1 (1, 4, 13, 40, 121, ...) - Shell's sequence: n/2, n/4, n/8, ..., 1 - Comprehensive test cases including performance comparison - Handles edge cases: null arrays, negatives, duplicates, large numbers - Excellent performance on nearly sorted data (adaptive algorithm) - Follows repository coding standards and Java conventions
github-actions
Bot
added
first-time-contributor
good first issue
|
🎉 Welcome to Hacktoberfest 2025, @Pasan11504! 🎃 Thank you for your first contribution to our DSA repository! Here's what happens next: 🔍 Automatic Checks
📋 Next Steps🎯 Great job! Your code compiled successfully. Maintainers @Karanjot786 and @Pradeepsingh61 will review your PR soon. 🎁 What You Get
💡 Tips for Success
Welcome to the community! 🚀 |
🤖 Automated PR Status🔍 Code Validation✅ Passed - File naming and structure look good! 🧪 Compilation Tests✅ Passed - All code compiles successfully! 📋 Overall Status🎉 Ready for Review - Your PR has passed all automated checks! This comment was generated automatically. Checks will re-run when you push new commits. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
📋 Pull Request Description
What does this PR add?
Algorithm Details
Unique Features
Gap Sequences Implemented
Performance & Testing
Code Quality
Files Added
Java/algorithms/sorting/ShellSort.java- Complete ShellSort with dual gap sequencesAlgorithm Advantages
Contributes to Hacktoberfest 2025 🎃
Additional Notes
This implementation showcases Shell sort's evolution from simple insertion sort to an efficient algorithm through gap sequences. The dual implementation allows developers to understand and compare different gap sequence strategies, making it both practical and educational.