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16 lines
431 B
Python
16 lines
431 B
Python
def is_geometric(li):
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if len(li) <= 1:
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return True
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# Calculate ratio
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ratio = li[1]/float(li[0])
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# Check the ratio of the remaining
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for i in range(1, len(li)):
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if li[i]/float(li[i-1]) != ratio:
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return False
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return True
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print(is_geometric([2, 6, 18, 54]))
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print(is_geometric([10, 5, 2.5, 1.25]))
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print(is_geometric([5, 8, 9, 11])) |