LeetCode #26: Remove Duplicates from Sorted Array in Java | Two Pointers O(n) - Must-Know Trick!
In this Algo Ducky deep dive, we tackle LeetCode #26: Remove Duplicates from Sorted Array — a deceptively simple problem with massive real-world implications. Whether you're managing sorted logs in analytics, deduplicating database rows, or cleaning up telemetry streams, this interview classic demands more than brute force.
We'll start with a naive approach to understand the problem space, then quickly swim to a much faster, in-place solution using two pointers — a FAANG-favorite pattern for efficient array processing.
Get ready to streamline your thinking and learn how top engineers avoid costly performance traps with clean, scalable code. Quack open your IDE — it's time to optimize!
Chapters:
0:00 Introduction
0:29 Brute Force with Shift
1:39 Two Pointers (Fast and Slow)
2:46 In-place Linear Scan with Write Index
3:40 Summary
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