Added Unicode test to strings/rabin_karp.py (TheAlgorithms#1096)

* Added print function into matrix_multiplication_addition.py and removed blank space in data_structures/binary tree directory

* Removed .vs/ folder per TheAlgorithms#893

* Rename matrix_multiplication_addition.py to matrix_operation.py

* Unicode test on strings/rabin_karp.py per TheAlgorithms#1067

Author: qckzr

Diff for: strings/rabin_karp.py

@@ -73,6 +73,13 @@ def test_rabin_karp():
     pattern = "abcdabcy"
     text = "abcxabcdabxabcdabcdabcy"
     assert rabin_karp(pattern, text)
+
+    # Test 5)
+    pattern = "Lü"
+    text = "Lüsai"
+    assert rabin_karp(pattern, text)
+    pattern = "Lue"
+    assert not rabin_karp(pattern, text)
     print("Success.")