Problem Description
Given two 0-indexed integer arrays nums1 and nums2, return a list of two lists where:
- The first list contains all distinct integers in nums1 that are not present in nums2.
- The second list contains all distinct integers in nums2 that are not present in nums1. The order of the integers in each list does not matter.
Key Insights
- Use sets to automatically remove duplicate elements.
- Utilize set difference operations to find elements unique to each array.
- Converting the set back to a list yields the required distinct elements.
- The order of elements is not important.
Space and Time Complexity
Time Complexity: O(n + m) Space Complexity: O(n + m)
Solution
To solve the problem, first convert both input arrays into sets in order to store only distinct elements. Then, compute the difference between these sets to determine which elements are unique to each array. Finally, convert the resulting sets back into lists and return them in a list of two lists. This approach efficiently handles the removal of duplicates and the computation of differences.