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Fix type error in strassen_matrix_multiplication.py (#8784)

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* Fix type error in strassen_matrix_multiplication.py

* updating DIRECTORY.md

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Tianyi Zheng 2023-05-29 17:37:54 -07:00 committed by GitHub
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DIRECTORY.md
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@ -294,6 +294,7 @@
* [Mergesort](divide_and_conquer/mergesort.py)
* [Peak](divide_and_conquer/peak.py)
* [Power](divide_and_conquer/power.py)
* [Strassen Matrix Multiplication](divide_and_conquer/strassen_matrix_multiplication.py)
## Dynamic Programming
* [Abbreviation](dynamic_programming/abbreviation.py)

10
divide_and_conquer/strassen_matrix_multiplication.py.BROKEN → divide_and_conquer/strassen_matrix_multiplication.py
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@ -112,17 +112,19 @@ def strassen(matrix1: list, matrix2: list) -> list:
[[139, 163], [121, 134], [100, 121]]
"""
if matrix_dimensions(matrix1)[1] != matrix_dimensions(matrix2)[0]:
raise Exception(
"Unable to multiply these matrices, please check the dimensions. \n"
f"Matrix A:{matrix1} \nMatrix B:{matrix2}"
msg = (
"Unable to multiply these matrices, please check the dimensions.\n"
f"Matrix A: {matrix1}\n"
f"Matrix B: {matrix2}"
)
raise Exception(msg)
dimension1 = matrix_dimensions(matrix1)
dimension2 = matrix_dimensions(matrix2)
if dimension1[0] == dimension1[1] and dimension2[0] == dimension2[1]:
return [matrix1, matrix2]
maximum = max(dimension1, dimension2)
maximum = max(*dimension1, *dimension2)
maxim = int(math.pow(2, math.ceil(math.log2(maximum))))
new_matrix1 = matrix1
new_matrix2 = matrix2