Delta Delta Series
Given a list of numbers, the delta series is computed by taking the difference between each consecutive pair of numbers (e.g., [1, 2, 4, 7, 11] → [1, 2, 3, 4]). Write a function that computes and returns the delta series of the delta series (i.e., the second-order differences) of a given input list.
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Late June, 2026
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Mid-level
The delta series is the series that results from taking a list of numbers and taking the delta between each number. For instance, for the series [1, 2, 4, 7, 11] the delta series would be [1, 1, 2, 3, 4]. Write a function that finds and returns the delta delta series.
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