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Refactorings (#8987)

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* use np.dot

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

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

* further improvements using array slicing

Co-authored-by: Tianyi Zheng <tianyizheng02@gmail.com>

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Tianyi Zheng <tianyizheng02@gmail.com>
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Dom 2023-08-20 16:43:09 -07:00 committed by GitHub
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arithmetic_analysis/gaussian_elimination.py
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@ -33,10 +33,7 @@ def retroactive_resolution(
x: NDArray[float64] = np.zeros((rows, 1), dtype=float)
for row in reversed(range(rows)):
total = 0
for col in range(row + 1, columns):
total += coefficients[row, col] * x[col]
total = np.dot(coefficients[row, row + 1 :], x[row + 1 :])
x[row, 0] = (vector[row] - total) / coefficients[row, row]
return x