Python DSA: How to Detect Duplicates in a List Using Set 🔥

Описание: Checking duplicates in Python is one of the most common interview questions, and here’s the cleanest method to solve it.
In this video, I used a set to find duplicates because sets only store unique values — making them perfect for fast lookups. Loop through the list
If the number already exists in the set → Duplicate found
Else add it and continue
If loop ends → No duplicatesThis logic is simple, fast, and used in real LeetCode interview problems.
If you’re learning Python, preparing for DSA, or starting your coding journey, make sure you understand this pattern you’ll use it again and again.More Python + DSA breakdowns coming soon!
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