23 lines
620 B
Python
23 lines
620 B
Python
def damm(num: int) -> bool:
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row = 0
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for digit in str(num):
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row = _matrix[row][int(digit)]
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return row == 0
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_matrix = (
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(0, 3, 1, 7, 5, 9, 8, 6, 4, 2),
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(7, 0, 9, 2, 1, 5, 4, 8, 6, 3),
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(4, 2, 0, 6, 8, 7, 1, 3, 5, 9),
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(1, 7, 5, 0, 9, 8, 3, 4, 2, 6),
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(6, 1, 2, 3, 0, 4, 5, 9, 7, 8),
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(3, 6, 7, 4, 2, 0, 9, 5, 8, 1),
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(5, 8, 6, 9, 7, 2, 0, 1, 3, 4),
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(8, 9, 4, 5, 3, 6, 2, 0, 1, 7),
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(9, 4, 3, 8, 6, 1, 7, 2, 0, 5),
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(2, 5, 8, 1, 4, 3, 6, 7, 9, 0)
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)
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if __name__ == '__main__':
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for test in [5724, 5727, 112946]:
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print(f'{test}\t Validates as: {damm(test)}')
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