https://yrbing.github.io/tags/reverse-thinking/ Recent content in Reverse Thinking on Robin Yang https://yrbing.github.io/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E https://yrbing.github.io/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E Hugo -- 0.152.2 en-us Thu, 01 Jan 2026 17:22:51 +0800 https://yrbing.github.io/posts/backward-thinking-with-sliding-window/ Thu, 01 Jan 2026 17:22:51 +0800 https://yrbing.github.io/posts/backward-thinking-with-sliding-window/ <p>We previously learned about the fixed-length sliding window technique, which typically involves sliding one element at a time. For a detailed explanation, refer to the article &mdash;&mdash; 📝<a href="https://yrbing.github.io/posts/fixed-length-sliding-window">How to Solve Fixed-Length Sliding Window Problems</a>. Now, we encounter a new problem that also appears solvable with a sliding window, but with a slight twist🔗.</p> <h2 id="a-tricky-problem">A Tricky Problem</h2> <p>There are several cards arranged in a row, and each card has an associated number of points. The points are given in the integer array <code>cardPoints</code>.</p>