每日算法题: Given two arrays, write a function to compute their intersection.

Hi, here's your problem today. This problem was recently asked by Amazon:

Given two arrays, write a function to compute their intersection - the intersection means the numbers that are in both arrays.

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]
Note:
Each element in the result must be unique.
The result can be in any order.

Here's a starting point:

class Solution:

  def intersection(self, nums1, nums2):

    # Fill this in.



print Solution().intersection([4, 9, 5], [9, 4, 9, 8, 4])

# [9, 4]