349.intersection-of-two-arrays.py

#
# @lc app=leetcode id=349 lang=python3
#
# [349] Intersection of Two Arrays
#
# https://leetcode.com/problems/intersection-of-two-arrays/description/
#
# algorithms
# Easy (70.65%)
# Likes:    4223
# Dislikes: 2070
# Total Accepted:    803.3K
# Total Submissions: 1.1M
# Testcase Example:  '[1,2,2,1]\n[2,2]'
#
# 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]
# 
# 
# Example 2:
# 
# 
# Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4]
# Output: [9,4]
# Explanation: [4,9] is also accepted.
# 
# 
# 
# Constraints:
# 
# 
# 1 <= nums1.length, nums2.length <= 1000
# 0 <= nums1[i], nums2[i] <= 1000
# 
# 
#

# @lc code=start
class Solution:
    def intersection(self, nums1: List[int], nums2: List[int]) -> List[int]:
        n1 = set(nums1)
        n2 = set(nums2)
        return list(n1 & n2)
        
# @lc code=end