Skip to content
Merged
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Add matrix inversion algorithm using NumPy (TheAlgorithms#12657)
* Create matrix_inversion.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update matrix_inversion.py

* Update matrix_inversion.py

* Update matrix_inversion.py

* Update matrix_inversion.py

* Update matrix_inversion.py

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>
  • Loading branch information
3 people authored Apr 14, 2025
commit 42820634f3795e7d7397ad2e688d091a79c1eb83
36 changes: 36 additions & 0 deletions linear_algebra/matrix_inversion.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
import numpy as np


def invert_matrix(matrix: list[list[float]]) -> list[list[float]]:
"""
Returns the inverse of a square matrix using NumPy.

Parameters:
matrix (list[list[float]]): A square matrix.

Returns:
list[list[float]]: Inverted matrix if invertible, else raises error.

>>> invert_matrix([[4.0, 7.0], [2.0, 6.0]])
[[0.6000000000000001, -0.7000000000000001], [-0.2, 0.4]]
>>> invert_matrix([[1.0, 2.0], [0.0, 0.0]])
Traceback (most recent call last):
...
ValueError: Matrix is not invertible
"""
np_matrix = np.array(matrix)

try:
inv_matrix = np.linalg.inv(np_matrix)
except np.linalg.LinAlgError:
raise ValueError("Matrix is not invertible")

return inv_matrix.tolist()


if __name__ == "__main__":
mat = [[4.0, 7.0], [2.0, 6.0]]
print("Original Matrix:")
print(mat)
print("Inverted Matrix:")
print(invert_matrix(mat))