Longest common substring sliding window. The task was to find the smallest substri...
Longest common substring sliding window. The task was to find the smallest substring in s that contains all characters of p (including duplicates). 🚀 Solved Today’s POTD: Longest Substring with K Unique Characters on GeeksforGeeks using Python 🐍 Problem: Given a string and an integer k, find the length of the longest substring that Character Replacement — LeetCode #424 Longest substring with same letters after at most k replacements. Note that "bca" and "cab" are also correct answers. 147 views. Jan 3, 2026 · An in-depth and easy-to-follow guide to solving the Longest Substring Without Repeating Characters problem using the sliding window pattern in Python. Jan 8, 2026 · Learn the Sliding Window Technique in DSA with a simple explanation of the Longest Substring Without Repeating Characters problem. Sep 2, 2025 · Commonly used for problems like finding subarrays with a specific sum, finding the longest substring with unique characters, or solving problems that require a fixed-size window to process elements efficiently. This is the best place to expand your knowledge and get prepared for your next interview. Jul 31, 2025 · This problem is a textbook example of how to use sliding window algorithms efficiently. If multiple valid substrings exist, we return the one with the minimum starting index. spzfzezguzftuvhthvadxuetwrgdmbbargmnkxuswbxfq