DSA

Mastering the Sliding Window Technique

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A Complete Guide with LeetCode Examples, Patterns, and Interview Tips By Dhirendra Singh Negi Table of Contents Introduction The Sliding Window technique is one of the most frequently asked coding interview topics in companies like: If you’ve solved problems like: then you’ve already used the Sliding Window technique. The biggest advantage is reducing an O(n²) … Read more

Mastering the Two Pointer Technique (With C# Examples)

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Want to solve array problems in O(n) instead of O(n²)? The Two Pointer technique is one of the first optimization patterns every software engineer should master. Whether you’re preparing for any interview Google, Microsoft, Amazon, or any product-based company, understanding the Two Pointer technique can turn brute-force solutions into elegant, interview-winning algorithms. In this guide, … Read more