Add `NumberAppearingOddTimes.java` new Algorithm

[DarkMatter-999]

trafficstars

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized it.
• [x] All filenames are in PascalCase.
• [x] All functions and variable names follow Java naming conventions.
• [x] All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• [x] All new code is formatted with clang-format -i --style=file path/to/your/file.java

Adds the Algorithm 1 as in #5628

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 58.61%. Comparing base (f3b2a94) to head (0a786d1). Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5633      +/-   ##
============================================
+ Coverage     58.58%   58.61%   +0.02%     
- Complexity     3746     3749       +3     
============================================
  Files           553      554       +1     
  Lines         15918    15922       +4     
  Branches       3029     3030       +1     
============================================
+ Hits           9325     9332       +7     
+ Misses         6195     6194       -1     
+ Partials        398      396       -2     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.