Watch 10 video solutions for Intersection of Two Arrays II, a easy level problem involving Array, Hash Table, Two Pointers. This walkthrough by Code with Alisha has 38,852 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
Given two integer arrays nums1 and nums2, return an array of their intersection. Each element in the result must appear as many times as it shows in both arrays and you may return the result in any order.
Example 1:
Input: nums1 = [1,2,2,1], nums2 = [2,2] Output: [2,2]
Example 2:
Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4] Output: [4,9] Explanation: [9,4] is also accepted.
Constraints:
1 <= nums1.length, nums2.length <= 10000 <= nums1[i], nums2[i] <= 1000
Follow up:
nums1's size is small compared to nums2's size? Which algorithm is better?nums2 are stored on disk, and the memory is limited such that you cannot load all elements into the memory at once?