Update Pangram.java

[preritasaini1]

Updated the Pangram.java file by adding a bitwise approach and improving code readability

• 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

Attention: Patch coverage is 45.00000% with 11 lines in your changes missing coverage. Please review.

Project coverage is 72.37%. Comparing base (e94be71) to head (6d0d701).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...c/main/java/com/thealgorithms/strings/Pangram.java	45.00%	9 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6048      +/-   ##
============================================
- Coverage     72.42%   72.37%   -0.06%     
+ Complexity     4991     4990       -1     
============================================
  Files           655      655              
  Lines         17593    17602       +9     
  Branches       3388     3392       +4     
============================================
- Hits          12742    12739       -3     
- Misses         4371     4381      +10     
- Partials        480      482       +2     

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[preritasaini1]

Hello everyone, I am ne in this contributing world, just checking in on my pull request. I'm excited to learn from your feedback and improve my contributions. Thanks!

[siriak]

Please replace main with JUnit tests

[preritasaini1]

I replaced main with JUnit tests. Please check and review . Thanks!

[siriak]

Now PR checks fail