Level 4Exercise #96

Fork one iterator

Compute sum and maximum from the same one-pass iterator without materializing it first.

What you’ll practice

This Level 4 exercise focuses on tee 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.tee.

Sample Test Cases

Example #1

Input:sum_and_max(iter([3,8,2]))

Output:(13,8)

Reference Solution

Reveal Reference Solution

def sum_and_max(stream) -> tuple[int,int]:
    from itertools import tee
    for_sum, for_max = tee(stream)
    return sum(for_sum), max(for_max)

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Fork one iterator

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution