Add 7 Matrix Unit Tests and Implement Matrix Multiplication

[youdymoo]

(Put an X inside the [ ] to denote check mark [X].)

• If creating a new file:

  • added links to it in the README files?
  • included tests with it? (in tests/test_matrix.py)
  • added description (overview of algorithm, time and space complexity, and possible edge case) in docstrings?

• if done some changes:

  • wrote a short description in the PR explaining what the changes do?
  • fixes Matrix multiplication #468 if related to any issue

• other

  • add valid unit tests of 7 methods of matrix (former coverage only 5.25%, now 49.86%)
  • follows the PEP8 code style

[coveralls]

Pull Request Test Coverage Report for Build 894

• 47 of 48 (97.92%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+2.6%) to 74.763%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
algorithms/matrix/multiply.py	10	11	90.91%

Totals
Change from base Build 885:	2.6%
Covered Lines:	5590
Relevant Lines:	7477

---

💛 - Coveralls

[keon]

let's align the columns in the same level

[youdymoo]

Sure. It's auto-formatted by the autopep8 LOL

[keon]

forgot to remove these?

[keon]

thanks for the contribution! this will be a nice addition to the matrix related algo.
i left some minor comments :)

[youdymoo]

Just updated! Thanks for the review.