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The Sliding Window Roadmap Nobody Gave You
Every pattern, every trick, and the exact problems to practice — in the order that actually makes it click.
I learned sliding window by solving random LeetCode problems and hoping the pattern eventually “clicks.” But it didn’t, not Fully.
I ended up recognizing the easy ones and freezing on anything slightly different.
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Finally I have came up with a diffeerent approach to learn it in a easy way. In this article I have summarised the exact same approach. Instead of throwing a pile of problems at you, we’ll build the concept from the ground up — what a window actually is, how to tell when a problem needs one, and then walk through two problems in full detail so the logic actually sticks. At the end, you get a practice list in the right order.
If you’ve ever solved a sliding window problem by copying a pattern you memorized without really knowing why it worked — this is for you.
What is a sliding window, really?
A sliding window is just a range(continious numbers) inside an array or string that you track using two pointers — usually called left and right. Instead…
