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dependabot[bot]
bd7f269aa9 chore(deps): bump gitpod/workspace-java-21 from 2025-10-06-13-14-25 to 2025-11-14-10-05-32 (#7148) 
chore(deps): bump gitpod/workspace-java-21

Bumps gitpod/workspace-java-21 from 2025-10-06-13-14-25 to 2025-11-14-10-05-32.

---
updated-dependencies:
- dependency-name: gitpod/workspace-java-21
  dependency-version: 2025-11-14-10-05-32
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-12-02 08:58:42 +00:00
dependabot[bot]
927fe1f87c chore(deps): bump com.puppycrawl.tools:checkstyle from 12.1.2 to 12.2.0 (#7147) 
Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 12.1.2 to 12.2.0.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](https://github.com/checkstyle/checkstyle/compare/checkstyle-12.1.2...checkstyle-12.2.0)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 12.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-12-02 09:54:59 +01:00
duvvuvenkataramana
8d2cdb27db feat: implement One-Time Pad cipher (#6941) (#7096) 
* feat: implement One-Time Pad cipher (#6941)

* style: format OneTimePadCipher with clang-format
 2025-12-01 20:17:32 +00:00
Shewale Gopal Sanjay
14c0b0844e Added threaded binary tree (#6995) 
* Add One-Time Pad Cipher implementation in Java

* Add One-Time Pad Cipher implementation (fixed)

* Add ThreadedBinaryTree with in-order traversal and tests

* feat: add threaded binary tree implementation and tests

* fix: remove redundant null check for SpotBugs compliance
 2025-12-01 20:13:14 +00:00
Taranjeet Singh Kalsi
ac6fef19dc Added program to check either number is Evil or Odious (#6958) 
added program for evil number
 2025-11-30 22:37:41 +00:00
Taranjeet Singh Kalsi
a9ba87c4b6 Added program to check Abundant number (#6961) 
added program for abundant number
 2025-11-28 08:51:28 +00:00
Sameer Prajapati
4c5525a2e0 feat: Added Gomory–Hu Tree (all-pairs min-cuts via n1 max-flows) (#6818) 
* Add Gomory–Hu Tree (all-pairs min-cuts via n1 max-flows)

* Stabilize Monte Carlo integration with antithetic variates to reduce variance

* Fix Checkstyle in GomoryHuTreeTest: remove inner assignments, add braces, split declarations

* SpotBugs: use RandomGenerator interface in test helper

---------

Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>
 2025-11-28 08:47:53 +00:00
dependabot[bot]
f352f8111b chore(deps): bump com.mebigfatguy.fb-contrib:fb-contrib from 7.7.0 to 7.7.1 (#7144) 
chore(deps): bump com.mebigfatguy.fb-contrib:fb-contrib

Bumps [com.mebigfatguy.fb-contrib:fb-contrib](https://github.com/mebigfatguy/fb-contrib) from 7.7.0 to 7.7.1.
- [Commits](https://github.com/mebigfatguy/fb-contrib/commits)

---
updated-dependencies:
- dependency-name: com.mebigfatguy.fb-contrib:fb-contrib
  dependency-version: 7.7.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-11-28 09:26:07 +01:00
Gokul45-45
d1ea306920 feat: add Valid Parentheses algorithm using Stack (#7117) 
* feat: add Valid Parentheses algorithm using Stack

* fix: add missing ValidParentheses.java implementation

* fix: remove trailing spaces and add newline at EOF

* fix: remove misplaced ValidParentheses.java from root
 2025-11-27 11:29:48 +00:00
Jayana Anjani Pavan Vardhan Naidu
e841d73837 Update Javadoc for perimeterIrregularPolygon method (#7141) 
Fixed incorrect @return description in perimeterIrregularPolygon method javadoc. Changed "trapezoid" to "irregular polygon" to accurately reflect what the method calculates.
 2025-11-27 12:25:52 +01:00
prasanth-30011
a14e1e3766 docs: improve javadoc for Combination class (#7126) 
Updated class documentation to reflect that the class finds combinations instead of permutations.
 2025-11-26 12:21:07 +01:00
dependabot[bot]
2c4bf3c7c8 chore(deps): bump com.github.spotbugs:spotbugs-maven-plugin from 4.9.8.1 to 4.9.8.2 (#7109) 
chore(deps): bump com.github.spotbugs:spotbugs-maven-plugin

Bumps [com.github.spotbugs:spotbugs-maven-plugin](https://github.com/spotbugs/spotbugs-maven-plugin) from 4.9.8.1 to 4.9.8.2.
- [Release notes](https://github.com/spotbugs/spotbugs-maven-plugin/releases)
- [Commits](https://github.com/spotbugs/spotbugs-maven-plugin/compare/spotbugs-maven-plugin-4.9.8.1...spotbugs-maven-plugin-4.9.8.2)

---
updated-dependencies:
- dependency-name: com.github.spotbugs:spotbugs-maven-plugin
  dependency-version: 4.9.8.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-11-25 16:36:37 +01:00
Eswar Venkata Ram Charan Seeram
1c6026ecc6 fix: correct error message in surfaceAreaCylinder method (#7106) 2025-11-24 21:16:16 +01:00
Deniz Altunkapan
f693c44b53 fix: prevent duplicate auth header in GitHub Actions workflow (#7091) 2025-11-22 19:26:16 +02:00
KANAKALA SAI KIRAN
fa8ea8e614 Feature/centroid decomposition (#7086) 
* feat: Add Centroid Decomposition for trees (#7054)

- Implement CentroidDecomposition with O(N log N) construction
- Add CentroidTree class with parent tracking and query methods
- Include buildFromEdges helper for easy tree construction
- Add comprehensive test suite with 20+ test cases
- Cover edge cases, validation, and various tree structures

Closes #7054

* feat: Add Centroid Decomposition for trees (#7054)

- Implement CentroidDecomposition with O(N log N) construction
- Add CentroidTree class with parent tracking and query methods
- Include buildFromEdges helper for easy tree construction
- Add comprehensive test suite with 20+ test cases
- Cover edge cases, validation, and various tree structures

Closes #7054

* fix: Remove trailing whitespace from CentroidDecompositionTest

* fix: Remove trailing whitespace and add newlines at end of files

* fix: Format code to comply with clang-format and checkstyle requirements

* style: Fix lambda formatting in test assertions

- Change single-line lambdas to multi-line format
- Align with repository code style guidelines

* style: Apply clang-format to match repository style guide

- Format code according to .clang-format configuration
- Use single-line lambdas as allowed by AllowShortLambdasOnASingleLine: All
- Apply 4-space indentation
- Ensure proper line endings
 2025-11-22 09:44:34 +00:00
dependabot[bot]
e6c576c50a chore(deps): bump actions/checkout from 5 to 6 in /.github/workflows (#7084) 
Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-11-20 19:44:44 +01:00
Piotr Idzik
fba6292ebc chore: pin infer to more recent hash (#7079) 
* chore: pin infer to more recent hash

* chore: suppress new infer warnings
 2025-11-19 19:31:32 +01:00
Deniz Altunkapan
e37a7ab6ce Update DIRECTORY.md (#7070) 
Co-authored-by: alxkm <alxkm@users.noreply.github.com>
 2025-11-19 18:25:09 +02:00
shreeya-g10
3519e396af backtracking: add unique permutation algorithm with test cases (#7078) 
* Add unique permutation algorithm and test cases

* Fix: add braces for checkstyle

* Apply clang-format
 2025-11-19 18:20:46 +02:00
dependabot[bot]
1c97ad8015 chore(deps): bump org.apache.commons:commons-lang3 from 3.19.0 to 3.20.0 (#7076) 
Bumps org.apache.commons:commons-lang3 from 3.19.0 to 3.20.0.

---
updated-dependencies:
- dependency-name: org.apache.commons:commons-lang3
  dependency-version: 3.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-11-17 22:16:07 +01:00
GOPISETTI NAVADEEP
9f2b675f3e feat: add Sudoku Solver using Backtracking (#7073) 
* feat: add Sudoku Solver using Backtracking (issue #6929)

* refactor: remove old Sudoku class from puzzlesandgames package

* Remove old Sudoku implementation and its test class
 2025-11-17 09:54:20 +01:00
SeungHyeok Yun
cff5d3662e feat: add IndexedPriorityQueue implementation and tests (#7062) 
* feat: add IndexedPriorityQueue implementation and tests

* mod : clang-format

* Fix Checkstyle naming for IndexedPriorityQueue tests

* Align IndexedPriorityQueue tests with Checkstyle and clang-format
 2025-11-16 19:49:30 +01:00
GOPISETTI NAVADEEP
c6880c195d feat: add Sieve of Eratosthenes algorithm (#7071) 
* feat: add Sieve of Eratosthenes algorithm

- Implement Sieve of Eratosthenes for finding prime numbers up to n
- Add comprehensive unit tests with edge cases
- Include JavaDoc documentation
- Time complexity: O(n log log n)
- Space complexity: O(n)

Resolves #6939

* fix: remove trailing spaces

* fix: apply clang-format
 2025-11-16 12:00:21 +00:00
GOPISETTI NAVADEEP
93811614b8 feat: add Count Set Bits algorithm (#7072) 
* feat: add Count Set Bits algorithm (issue #6931)

* fix: correct CountSetBits algorithm logic

* style: apply clang-format to CountSetBits files

* fix: correct test expectations for CountSetBits

* fix: correct test expectations for CountSetBits
 2025-11-16 12:54:43 +01:00
Krishna
3979e824b7 Add Power of Four Check using bit manipulation (#7065) 
* Add Power of Four Check using bit manipulation

- Implements isPowerOfFour method using bit manipulation
- Checks if number is power of two and has bit at even position
- Includes comprehensive unit tests
- Fixes #6940

* Fix code formatting in PowerOfFourTest

* Move PowerOfFour classes to maths package

* Fix package declaration in PowerOfFourTest

* Fix code formatting in PowerOfFourTest

* Remove redundant import from PowerOfFourTest

* Remove unrelated file
 2025-11-15 18:36:01 +01:00
Taranjeet Singh Kalsi
98eecb9f16 Added program to check Smith number (#6955) 
added smith number program
 2025-11-15 09:32:06 +00:00
Krishna
8a339ef2e2 Add Temperature Conversion Utility (#7066) 
- Implements conversions between Celsius, Fahrenheit, and Kelvin
- Includes all 6 conversion methods
- Adds comprehensive unit tests with edge cases
- Fixes #6936
 2025-11-15 10:22:36 +01:00
Deniz Altunkapan
a008cc2b08 Update DIRECTORY.md (#6809) 
Co-authored-by: DenizAltunkapan <DenizAltunkapan@users.noreply.github.com>
 2025-11-12 15:22:21 +02:00
dependabot[bot]
b709941eb6 chore(deps): bump com.puppycrawl.tools:checkstyle from 12.1.1 to 12.1.2 (#7063) 
Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 12.1.1 to 12.1.2.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](https://github.com/checkstyle/checkstyle/compare/checkstyle-12.1.1...checkstyle-12.1.2)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 12.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2025-11-11 22:30:27 +01:00
dependabot[bot]
0a55165692 chore(deps): bump com.mebigfatguy.fb-contrib:fb-contrib from 7.6.15 to 7.7.0 (#7060) 
* chore(deps): bump com.mebigfatguy.fb-contrib:fb-contrib

Bumps [com.mebigfatguy.fb-contrib:fb-contrib](https://github.com/mebigfatguy/fb-contrib) from 7.6.15 to 7.7.0.
- [Commits](https://github.com/mebigfatguy/fb-contrib/commits/v7.7.0)

---
updated-dependencies:
- dependency-name: com.mebigfatguy.fb-contrib:fb-contrib
  dependency-version: 7.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix: suppress new warnings

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: vil02 <65706193+vil02@users.noreply.github.com>
 2025-11-11 13:03:51 +01:00
PRINCE PATEL
2588af0205 fix: Correct typo in ExponentialSearch filename (#7056) 2025-11-07 11:32:18 +01:00
Priyanshu Kumar Singh
4951fb9ce2 [FEAT] Add Kinematics (SUVAT) equations (#7053) 
[FEAT] Add SUVAT equation for motion

Co-authored-by: Priyanshu1303d <priyanshu130d@gmail.com>
 2025-11-06 18:41:39 +01:00
Lê Nam Khánh
5a68ba9399 chore: fix typos in some files (#7052) 
Fix typos in some files
 2025-11-06 12:40:34 +02:00
Arzoo1701
d126fd59f7 Add Trapping Rainwater problem implementation (Two Pointer Approach) (#6990) 
* Add Trapping Rainwater problem implementation (Two Pointer Approach)

* Add Wikipedia reference link for Trapping Rainwater problem

* fix: format TrappingRainwater.java for CI check

* fix: add package and resolve checkstyle errors for TrappingRainwater.java

* fix: declare TrappingRainwater as final to pass Checkstyle

* Add test cases for TrappingRainwater algorithm

* Add test cases for TrappingRainwater algorithm

* Move TrappingRainwater algorithm to stacks package

* Fix: Move TrappingRainwater to stacks and normalize newline in JugglerSequence

* Fix: Normalize newline in JugglerSequence to ensure test consistency

* Fix: Normalize newline in JugglerSequence and remove return statement

* Add JaCoCo plugin for code coverage reporting

* Revert pom.xml to original version from master

* Fix: Revert the pom.xml file

---------

Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>
 2025-11-05 18:41:08 +01:00
Lê Nam Khánh
d28fee9665 chore: fix typos in src/main/java/com/thealgorithms/dynamicprogramming/BoundaryFill.java (#7049) 
Fix typos in src/main/java/com/thealgorithms/dynamicprogramming/BoundaryFill.java
 2025-11-05 15:53:18 +00:00
Lê Nam Khánh
c7cb54ed84 chore: fix typos in src/main/java/com/thealgorithms/datastructures/trees/CeilInBinarySearchTree.java (#7048) 
Fix typos in src/main/java/com/thealgorithms/datastructures/trees/CeilInBinarySearchTree.java
 2025-11-05 15:49:00 +00:00
Lê Nam Khánh
147da38888 chore: fix typos in src/main/java/com/thealgorithms/ciphers/AES.java (#7047) 
Fix typos in src/main/java/com/thealgorithms/ciphers/AES.java

Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>
 2025-11-05 15:45:27 +00:00
Lê Nam Khánh
702664116d chore: fix typos in src/main/java/com/thealgorithms/backtracking/FloodFill.java (#7046) 
Fix typos in src/main/java/com/thealgorithms/backtracking/FloodFill.java
 2025-11-05 16:41:33 +01:00
Avaneeshakrishna
53230842f2 add CombinationSum and test (#6725) 
* add CombinationSum and test

* Format array and list literals in CombinationSumTest

* Fix sorting comparator in CombinationSumTest

* Refactor CombinationSum for better handling and clarity

Updated combinationSum method to handle null or empty candidates and improved variable naming for clarity.

* Fix sorting comparator in CombinationSumTest

* Update CombinationSumTest.java

* Fix sorting comparator for list of integers

* Fix formatting issues in CombinationSum class

* Change CombinationSum class to final

* Refactor norm method to accept Iterable instead of List

* Remove unnecessary whitespace in CombinationSumTest
 2025-11-05 11:22:39 +00:00
Lê Nam Khánh
8c8527c2c8 chore: fix typos in src/main/java/com/thealgorithms/datastructures/trees/AVLSimple.java (#7029) 
Fix typos in src/main/java/com/thealgorithms/datastructures/trees/AVLSimple.java
 2025-11-05 11:12:14 +00:00
Lê Nam Khánh
0c277a1d9e chore: fix typos in src/main/java/com/thealgorithms/datastructures/heaps/FibonacciHeap.java (#7027) 
Fix typos in src/main/java/com/thealgorithms/datastructures/heaps/FibonacciHeap.java
 2025-11-05 11:08:49 +00:00
Lê Nam Khánh
d75a668870 chore: fix typos in src/main/java/com/thealgorithms/datastructures/trees/BSTRecursiveGeneric.java (#7030) 
Fix typos in src/main/java/com/thealgorithms/datastructures/trees/BSTRecursiveGeneric.java
 2025-11-05 11:05:13 +00:00
Lê Nam Khánh
65eeb5579e chore: fix typos in src/main/java/com/thealgorithms/devutils/nodes/SimpleNode.java (#7031) 
Fix typos in src/main/java/com/thealgorithms/devutils/nodes/SimpleNode.java

Co-authored-by: a <19151554+alxkm@users.noreply.github.com>
 2025-11-05 11:01:44 +00:00
Lê Nam Khánh
96304bda30 chore: fix typos in src/main/java/com/thealgorithms/devutils/nodes/SimpleTreeNode.java (#7032) 
Fix typos in src/main/java/com/thealgorithms/devutils/nodes/SimpleTreeNode.java
 2025-11-05 10:56:44 +00:00
Lê Nam Khánh
8ae57476b1 chore: fix typos in src/main/java/com/thealgorithms/devutils/nodes/TreeNode.java (#7033) 
Fix typos in src/main/java/com/thealgorithms/devutils/nodes/TreeNode.java
 2025-11-05 10:53:11 +00:00
Lê Nam Khánh
fab09e7da1 chore: fix typos in src/main/java/com/thealgorithms/datastructures/graphs/MatrixGraphs.java (#7026) 
Fix typos in src/main/java/com/thealgorithms/datastructures/graphs/MatrixGraphs.java

Co-authored-by: a <19151554+alxkm@users.noreply.github.com>
 2025-11-05 10:48:33 +00:00
Lê Nam Khánh
dd01b35d97 chore: fix typos in src/main/java/com/thealgorithms/datastructures/graphs/BellmanFord.java (#7025) 
Fix typos in src/main/java/com/thealgorithms/datastructures/graphs/BellmanFord.java

Co-authored-by: a <19151554+alxkm@users.noreply.github.com>
 2025-11-05 10:44:45 +00:00
Lê Nam Khánh
19f0f0bd83 chore: fix typos in src/main/java/com/thealgorithms/conversions/TurkishToLatinConversion.java (#7024) 
Fix typos in src/main/java/com/thealgorithms/conversions/TurkishToLatinConversion.java
 2025-11-05 10:40:08 +00:00
Lê Nam Khánh
b87b1102d0 chore: fix typos in src/main/java/com/thealgorithms/datastructures/queues/PriorityQueues.java (#7028) 
Fix typos in src/main/java/com/thealgorithms/datastructures/queues/PriorityQueues.java

Co-authored-by: a <19151554+alxkm@users.noreply.github.com>
 2025-11-05 10:35:18 +00:00
Lê Nam Khánh
88c8e3935c chore: fix typos in src/main/java/com/thealgorithms/divideandconquer/ClosestPair.java (#7034) 
Fix typos in src/main/java/com/thealgorithms/divideandconquer/ClosestPair.java

Co-authored-by: a <19151554+alxkm@users.noreply.github.com>
 2025-11-05 10:31:34 +00:00