167. Intersection of unsorted arrays

easy  - accepted / - tried

Given two arrays, find the intersection(items occur in both arrays)

  1. arrays are not sorted, and might have duplicates.
  2. you can modify the arrays
  3. you can return the items in any order, but without duplicates.

This is an easy problem, What is the time & space complexity of your approach?

Always try to find a better approach.