Algorithms 12 min read
Mastering the Sliding Window Technique: A Visual Guide
Learn how to optimize array and string problems from O(n²) to O(n) using the sliding window pattern.
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Ankit MishraKnowledge Base
Arena Intel.
Deep dives into algorithms, data structures, and the engineering behind the Arena. Master the patterns to dominate the leaderboard.
Computer Science 10 min read
BFS vs DFS: Choosing the Right Graph Traversal
Explore the fundamental differences between Breadth-First Search and Depth-First Search and when each one actually makes sense to use.
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Sumit SinghProgramming 15 min read
Stop Memorizing DP Problems — Learn the 5 Core Patterns Instead
Dynamic programming clicked for me when I stopped trying to memorize problems and started recognizing patterns. Here's what that looks like.
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Tousif AhamedAlgorithms 9 min read
The Two Pointers Technique: More Powerful Than You Think
Two pointers isn't just for sorted arrays. Once you see the full scope of this pattern, you'll spot it in problems you never expected.
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Nawajish AlamComputer Science 11 min read
Building Real Intuition for Time and Space Complexity
Big O isn't just for interviews. Here's how to think about complexity in a way that actually helps you write better code day-to-day.
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Bharat KumarProgramming 13 min read
Recursion and Backtracking: A Visual Walkthrough
Backtracking is recursive trial-and-error with discipline. Once you see the pattern, you can tackle permutations, combinations, and constraint puzzles with confidence.
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Udita NandiELIX // INTEL_FEED // CORE_SYNC