Valid Parenthesis using Java

[Navyadubbaka]

please assign to me @alxkm

Issue details

By using stacks we can find the valid parenthesis

[Ruturaj-007]

Hi, @alxkm I’d like to work on this issue.
I’ve already implemented an efficient and clean Java solution for the Valid Parenthesis problem using a stack-based approach with O(n) time and O(n) space complexity.
The code handles all edge cases (like unmatched or misplaced brackets) and follows the repository’s structure and style.
Could you please assign this issue to me? I’ll open a PR with proper Javadoc comments and test cases once assigned.
Thank you!

[RiyaJoshi0103]

Hi @alxkm,
I would like to work on this issue as part of Hacktoberfest 2025.
I’ll make sure to follow the contribution guidelines and write clean, well-documented Java code.
Thank you!

[shubhojeet2107]

Hi @Navyadubbaka, are you currently working on this issue? Just checking in as it's been a couple of days.

If the issue is available, I would love to take it on. I can provide a clean and efficient solution for the "Valid Parentheses" problem using a stack, complete with unit tests to ensure it's correct.

Additionally, I'm passionate about data structures and have noticed the repository could benefit from more foundational stack content. After completing this issue, I would be happy to open new issues and contribute implementations for:

1. A standard Stack from scratch.
2. A Dynamic Stack (that resizes automatically).
3. Other common stack-based interview questions.

@alxkm , please let me know if I can be assigned to this. Thank you!

[Navyadubbaka]

hi @shubhojeet2107 The issue was not yet assigned.

[Vadank-Ji]

Please assign me this issue I have implemented the same problem in other languages and will be able to do it qujckly