LU-decomposition algorithm implementation

[kaydotdev]

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[codecov]

Codecov Report

Merging #138 into master will increase coverage by 0.50%.
The diff coverage is 95.34%.

@@            Coverage Diff             @@
##           master     #138      +/-   ##
==========================================
+ Coverage   86.70%   87.21%   +0.50%     
==========================================
  Files          55       57       +2     
  Lines        2166     2252      +86     
==========================================
+ Hits         1878     1964      +86     
  Misses        288      288              

Impacted Files	Coverage Δ
Utilities/Extensions/MatrixExtensions.cs	81.81% <81.81%> (ø)
Algorithms/Numeric/Decomposition/LU.cs	100.00% <100.00%> (ø)
Algorithms/Search/FastSearcher.cs	91.30% <0.00%> (+8.69%)	⬆️

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[siriak]

Very good! I have added some minor comments though. Could you also specify which algorithm you use for LU decomposition as I wanted to learn it, but couldn't find. And please add to unit tests a check that product of produced matrices is, in fact, source matrix.

[kaydotdev]

@siriak, minor issues are fixed now! If you want to get familiar with this algorithm you can read about it in the book "Algorithms and Datastructures" by A. Levitin.

[siriak]

Thank you!