Level 4Exercise #97

Adjacent differences

Return the change between each adjacent pair of measurements.

What you’ll practice

This Level 4 exercise focuses on pairwise in the Itertools curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: itertools.pairwise.

Sample Test Cases

Example #1

Input:deltas([5,8,6,10])

Output:[3,-2,4]

Reference Solution

Reveal Reference Solution

def deltas(values: list[int]) -> list[int]:
    from itertools import pairwise
    return [right-left for left, right in pairwise(values)]

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Adjacent differences

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution