* Add StochasticMatrix utility class
This class provides methods to check if a matrix is row-stochastic or column-stochastic, ensuring all elements are non-negative and the sums of rows or columns equal 1.
* Change package from maths to matrix
Updated package declaration for StochasticMatrix class.
* Change package declaration in StochasticMatrixTest
* Delete src/test/java/com/thealgorithms/StochasticMatrixTest.java
* Refactor matrix initialization for test cases
* Fix formatting of matrix initialization in tests
* Remove unnecessary newline in StochasticMatrix
* Add import statement for JUnit in StochasticMatrixTest
* Add additional assertions to StochasticMatrixTest
* Clean up import statements in StochasticMatrixTest
Removed unused import statements for cleaner code.
* Reorder import statements in StochasticMatrixTest
* Remove unused import assertThrows from StochasticMatrixTest
Removed unused import for assertThrows.
* Added LU decomposition algorthm
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* Added LU decomposition algorthim
* MatrixMultiplication.java created and updated.
* Add necessary comment to MatrixMultiplication.java
* Create MatrixMultiplicationTest.java
* method for 2 by 2 matrix multiplication is created
* Use assertMatrixEquals(), otherwise there can be error due to floating point arithmetic errors
* assertMatrixEquals method created and updated
* method created for 3by2 matrix multiply with 2by1 matrix
* method created for null matrix multiplication
* method for test matrix dimension error
* method for test empty matrix input
* testMultiply3by2and2by1 test case updated
* Check for empty matrices part updated
* Updated Unit test coverage
* files updated
* clean the code
* clean the code
* Updated files with google-java-format
* Updated files
* Updated files
* Updated files
* Updated files
* Add reference links and complexities
* Add test cases for 1by1 matrix and non-rectangular matrix
* Add reference links and complexities
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Co-authored-by: Deniz Altunkapan <93663085+DenizAltunkapan@users.noreply.github.com>
