30-seconds-of-code/snippets/lcm.md

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
Least common multiple	math,list	intermediate	2018-01-08T22:30:17+02:00	2020-11-02T19:31:15+02:00

Returns the least common multiple of a list of numbers.

• Use functools.reduce(), math.gcd() and lcm(x, y) = x * y / gcd(x, y) over the given list.

from functools import reduce
from math import gcd

def lcm(numbers):
  return reduce((lambda x, y: int(x * y / gcd(x, y))), numbers)

lcm([12, 7]) # 84
lcm([1, 3, 4, 5]) # 60