Cracking the Sliding Window: Longest Substring Without Repeating Characters in Python
An in-depth and easy-to-follow guide to solving the Longest Substring Without Repeating Characters problem using the sliding window pattern in Python. This article explains the intuition behind pointers and hash maps, walks through a real example step by step, and shows how to optimize a naive quadratic solution into an efficient linear-time algorithm commonly expected in technical interviews.
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