20240716 2956 - Easy - Array

2956. Find Common Elements Between Two Arrays

class Solution:
    def findIntersectionValues(self, nums1: List[int], nums2: List[int]) -> List[int]:
        nd = dict()
        nd2 = dict()
        ans1 = 0
        ans2 = 0
        for n in nums1:
            if n not in nd:
                nd[n] = True
        for n in nums2:
            if n in nd:
                ans2 += 1
            if n not in nd2:
                nd2[n] = True
        for n in nums1:
            if n in nd2:
                ans1 += 1
        return [ans1, ans2]