Refactor cycles

[divyanshsaxena002]

• 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 algorithms include a corresponding test class that validates their functionality.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

❌ Patch coverage is 95.84570% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.30%. Comparing base (dc3d64f) to head (f998f62).

Files with missing lines	Patch %	Lines
...n/java/com/thealgorithms/ciphers/AtbashCipher.java	61.11%	5 Missing and 2 partials ⚠️
...a/com/thealgorithms/ciphers/PermutationCipher.java	94.54%	1 Missing and 2 partials ⚠️
...om/thealgorithms/datastructures/graphs/Cycles.java	90.47%	0 Missing and 2 partials ⚠️
...ms/dynamicprogramming/UniqueSubsequencesCount.java	88.88%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7247      +/-   ##
============================================
+ Coverage     79.12%   79.30%   +0.18%     
- Complexity     6985     6986       +1     
============================================
  Files           784      784              
  Lines         22971    22966       -5     
  Branches       4515     4515              
============================================
+ Hits          18175    18213      +38     
+ Misses         4076     4030      -46     
- Partials        720      723       +3     

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