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Optimized LongestPalindromicSubstring.java (Reduced Time Complexity ) #5379

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@Narasimha-png Narasimha-png commented Aug 24, 2024

Optimized Longest Polindromic Substring from avg run time of 532ms to 13ms

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized it.
  • All filenames are in PascalCase.
  • All functions and variable names follow Java naming conventions.
  • All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
  • All new code is formatted with clang-format -i --style=file path/to/your/file.java

Optimized Longest Polindromic Substring from avg run time of 532ms to 13ms
@Narasimha-png
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Reduced Time Complexity from avg run time 434ms to 13 ms

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codecov-commenter commented Aug 24, 2024

Codecov Report

Attention: Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.

Project coverage is 46.92%. Comparing base (b231a72) to head (34e7667).

Files Patch % Lines
...lgorithms/strings/LongestPalindromicSubstring.java 0.00% 16 Missing ⚠️
Additional details and impacted files
@@             Coverage Diff              @@
##             master    #5379      +/-   ##
============================================
+ Coverage     46.90%   46.92%   +0.02%     
- Complexity     2903     2904       +1     
============================================
  Files           525      525              
  Lines         15363    15362       -1     
  Branches       2908     2905       -3     
============================================
+ Hits           7206     7209       +3     
+ Misses         7855     7853       -2     
+ Partials        302      300       -2     

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@BamaCharanChhandogi BamaCharanChhandogi left a comment

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The changes in this pull request significantly improve the efficiency and readability of the code. Great work!
One suggestion for further improvement: consider renaming the method f to something more descriptive, like expandAroundCenter

for (int i = 0; i < n / 2; ++i) {
if (s.charAt(lo + i) != s.charAt(hi - i)) {
return false;
public void f(String s, int l, int r) {

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Suggested change
public void f(String s, int l, int r) {
private void expandAroundCenter(String s, int l, int r) {

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This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contribution!

@github-actions github-actions bot added the stale label Sep 25, 2024
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github-actions bot commented Oct 3, 2024

Please reopen this pull request once you have made the required changes. If you need help, feel free to ask in our Discord server or ping one of the maintainers here. Thank you for your contribution!

@github-actions github-actions bot closed this Oct 3, 2024
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3 participants