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willhbr/matrix.py

Created January 31, 2016 05:15
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Matrix Determinant Calculator
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matrix.py
def calculate(mat, mul=1):
return (mul * mat[0][0] if len(mat) == 1 else sum((mul * calculate(list(map(lambda j: list(filter(lambda el: el != None, (mat[j][k] if k != i else None for k in range(len(mat))))), range(1, len(mat)))), (-1 if i % 2 == 0 else 1) * mat[0][i])) for i in range(len(mat))))
matrix = [
[1, -2, 3],
[0, -3, -4],
[0, 0, -3]
]
print(calculate(matrix))
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