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Added Power of Four Check (Bit Manipulation) #6999

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Shewale41 wants to merge 8 commits into TheAlgorithms:master
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@Shewale41 Shewale41 commented Oct 30, 2025 •
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Description

This PR adds an implementation to check whether a number is a power of four
using bit manipulation.

The algorithm ensures that:

  • The number is positive.
  • It has exactly one set bit.
  • The set bit is at an even position.

Type of change

  • New Algorithm / Data Structure

Checklist

  • Code follows TheAlgorithms/Java style and package structure
  • SpotBugs, Checkstyle, and CodeQL pass successfully
  • Added comprehensive JUnit test cases
  • Added Javadoc documentation
  • Verified output with multiple test examples

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Codecov Report

❌ Patch coverage is 92.06349% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.39%. Comparing base (21eff8a) to head (f58388c).
⚠️ Report is 5 commits behind head on master.

Files with missing lines Patch % Lines
...ithms/datastructures/trees/ThreadedBinaryTree.java 90.19% 2 Missing and 3 partials ⚠️
Additional details and impacted files 
@@ Coverage Diff @@
## master #6999 +/- ##
============================================
+ Coverage 78.26% 78.39% +0.12% 
- Complexity 6573 6639 +66 
============================================
 Files 743 749 +6 
 Lines 21895 22078 +183 
 Branches 4288 4331 +43 
============================================
+ Hits 17137 17308 +171 
- Misses 4074 4080 +6 
- Partials 684 690 +6

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Contributor Author

Hey @DenizAltunkapan @yanglbme @alxkm 👋 can you please review this PR , I have cleared all the checks can you merge my PR.
Thanks.

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@DenizAltunkapan DenizAltunkapan Awaiting requested review from DenizAltunkapan DenizAltunkapan is a code owner

@yanglbme yanglbme Awaiting requested review from yanglbme yanglbme is a code owner

@alxkm alxkm Awaiting requested review from alxkm alxkm is a code owner

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