9 lines
273 B
Python
9 lines
273 B
Python
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def is_arithmetic(l):
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delta = l[1] - l[0]
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for index in range(len(l) - 1):
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if not (l[index + 1] - l[index] == delta):
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return False
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return True
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print(is_arithmetic([5, 7, 9, 11]))
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print(is_arithmetic([5, 8, 9, 11]))
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