feat: Add Longest Palindromic Subsequence algorithm in R #164
Conversation
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
Contributor
sgindeed
commented
Oct 8, 2025
sgindeed
commented
- Implemented the Longest Palindromic Subsequence algorithm in R.
- Uses dynamic programming to compute both length and subsequence.
- Handles case-insensitive input for better consistency.
- Prints the longest palindromic subsequence and its length.
- Written in clean, modular, and readable R code.
- Time Complexity: O(n^2)
- Space Complexity: O(n^2)
There was a problem hiding this comment.
Pull Request Overview
This PR adds an implementation of the Longest Palindromic Subsequence algorithm in R using dynamic programming. The algorithm finds the longest subsequence of characters that reads the same forwards and backwards.
- Implements dynamic programming solution with O(n²) time and space complexity
- Includes subsequence reconstruction to return the actual palindromic string
- Converts input to lowercase for case-insensitive matching
Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.
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Outdated suggestions cannot be applied.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.