[LeetCode]#349. Intersection of Two Arrays

Environment: Python 3.8

Key technique: &, set , list

Given two integer arrays nums1 and nums2, return an array of their intersection. Each element in the result must be unique and you may return the result in any order.

Example 1:

Input: nums1 = [1,2,2,1], nums2 = [2,2]
Output: [2]


  1. Use & and set to get Intersection.
  2. Convert it to a list.


class Solution:
def intersection(self, nums1, nums2):
return list(set(nums1) & set(nums2))