Sliding Window Explained with Python | DSA Pattern Made Easy (Step-by-Step Dry Run)

Learn the Sliding Window Pattern in Data Structures & Algorithms (DSA) using Python 🚀.
We’ll cover:
What is Sliding Window?
When to use it (subarrays, substrings, fixed/variable ranges)
Example 1: Maximum Sum Subarray of Size K
Example 2: Longest Substring Without Repeating Characters
Step-by-step dry run with visual explanation
This is one of the most important coding interview patterns, used in FAANG and top tech interviews.