Improve docs, remove `main`, add tests for `MatrixChainRecursiveTopDo…

[Hardvan]

…wnMemoisation`

• [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

[codecov-commenter]

Codecov Report

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

Project coverage is 58.91%. Comparing base (b54cc21) to head (f725171). Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5659      +/-   ##
============================================
+ Coverage     58.59%   58.91%   +0.31%     
- Complexity     3749     3766      +17     
============================================
  Files           554      554              
  Lines         15922    15905      -17     
  Branches       3030     3028       -2     
============================================
+ Hits           9330     9370      +40     
+ Misses         6195     6135      -60     
- Partials        397      400       +3     

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