List union

Python, List · Nov 2, 2020

Returns every element that exists in any of the two lists once.

  • Create a set with all values of a and b and convert to a list.
def union(a, b):
  return list(set(a + b))
union([1, 2, 3], [4, 3, 2]) # [1, 2, 3, 4]

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