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17 lines
432 B
Python
17 lines
432 B
Python
def find_missing(sequence):
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# Relation => a_n - a_(n-1) = d
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diffs = []
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for i in range(len(sequence) - 1):
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diffs.append(sequence[i + 1] - sequence[i])
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max_diff = diffs[0]
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for index, diff in enumerate(diffs[1:], 1):
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if abs(diff) > abs(max_diff):
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return sequence[index] + max_diff
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elif abs(max_diff) > abs(diff):
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return sequence[0] + diff
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raise ValueError()
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