Added test cases for sorting algorithms

[pushkar0406]

• 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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.57%. Comparing base (9b4dec0) to head (2a9554a).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #6345   +/-   ##
=========================================
  Coverage     74.57%   74.57%           
- Complexity     5450     5451    +1     
=========================================
  Files           682      682           
  Lines         19034    19034           
  Branches       3689     3689           
=========================================
+ Hits          14194    14195    +1     
  Misses         4277     4277           
+ Partials        563      562    -1     

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[siriak]

Please check why build is failing

[DenizAltunkapan]

@pushkar0406 are you still working on it?

[pushkar0406]

@DenizAltunkapan yes. needs more improvement in tests.