DSA Article
Practical guides on AI, DSA, full stack, cloud, and career growth.
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Stop Searching Word by Word. Understand the Trie Data Structure
A beginner-friendly guide to how prefix trees store words, share characters, and make searching easier.
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You Don’t Need to Memorize Heap Code. Understand These 5 Ideas Instead.
A beginner-friendly guide to heaps, priority queues, heapify, and the O(log n) idea behind them
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Trees in DSA: The Beginner’s Guide I Wish I Had
Understand trees from scratch — nodes, traversals, recursion, Binary Search Trees, Tries, and the problem-solving patterns that make everything click.
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6 Sorting Algorithms Every Developer Learns — But Only 3 Really Stick
Bubble Sort, Selection Sort, Insertion Sort, Merge Sort, Quick Sort, and Heap Sort — what I actually remember after learning all of them.
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Binary Search for Beginners: The One Idea You Actually Need to Understand
Binary Search is one of those algorithms that looks very easy when someone explains it.
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7 Queue Patterns That Show Up in Every FAANG Interview (And How to Actually Learn Them)
Most people learn queues for five minutes, call it “easy,” and then freeze the moment an interviewer says “now do it without a second array.”
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7 Stack Patterns That Show Up in Almost Every FAANG Interview (With Code)
I ignored stack questions for two years of my career. Then I bombed an interview because of exactly that, and had to relearn everything the hard way.
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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.
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There Are Only 4 Types of Two Pointer Problems — Here’s Every One of Them
I failed interviews thinking every sliding window question was a new puzzle. It wasn’t. It was always one of these four.
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Big O Notation Simplified: Understanding Time and Space Complexity Once and For All
My code ran perfectly on my laptop. Then we got 2 million users — here’s what broke, and the CS concept nobody explains properly until your server catches fire in production
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