Level 5Exercise #117

GCD of many values

Return the greatest common divisor across a non-empty list.

What you’ll practice

This Level 5 exercise focuses on reduce + gcd in the Algorithms curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: re — Regular expression operations.

Sample Test Cases

Example #1

Input:gcd_all([24,36,60])

Output:12

Reference Solution

Reveal Reference Solution

def gcd_all(values: list[int]) -> int:
    from functools import reduce
    from math import gcd
    return reduce(gcd, values)

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GCD of many values

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution