# Find the common elements between two lists using sets for efficient O(n) membership testing

Canonical URL: <https://datadriven.io/problems/find-the-common-elements-between-two-lists-using-sets-for-ef-c42b82e7>

Domain: Python · Difficulty: medium

## Problem

Find the common elements between two lists using sets for efficient O(n) membership testing. Convert both lists to sets, find their intersection, and print the result as a sorted list.

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