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Mention square matrices in strassen docs and make it more clear#9839

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Merged
tianyizheng02 merged 2 commits into from
Oct 7, 2023
Merged

Mention square matrices in strassen docs and make it more clear #9839

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dc11ca7
refactor: fix strassen matrix multiplication docs
saahil-mahato Oct 5, 2023
bd2cee9
refactor: make docs more clear
saahil-mahato Oct 5, 2023
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6 changes: 3 additions & 3 deletions divide_and_conquer/strassen_matrix_multiplication.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -74,7 +74,7 @@ def print_matrix(matrix: list) -> None:
def actual_strassen(matrix_a: list, matrix_b: list) -> list:
"""
Recursive function to calculate the product of two matrices, using the Strassen
Algorithm. It only supports even length matrices.
Algorithm. It only supports square matrices of any size that is a power of 2.
"""
if matrix_dimensions(matrix_a) == (2, 2):
return default_matrix_multiplication(matrix_a, matrix_b)
Expand DownExpand Up@@ -129,8 +129,8 @@ def strassen(matrix1: list, matrix2: list) -> list:
new_matrix1 = matrix1
new_matrix2 = matrix2

# Adding zeros to the matrices so that the arrays dimensions are the same and also
# power of 2
# Adding zeros to the matrices to convert them both into square matrices of equal
# dimensions that are a power of 2
for i in range(maxim):
if i < dimension1[0]:
for _ in range(dimension1[1], maxim):
Expand Down