Algorithms & Data Structures

So you have an algorithmic coding interview coming up... You know the standard advice: think out...

Arrays and its methods in JavaScript An array in JavaScript is a data structure used to...

The invert a binary tree interview question is 5 lines of code. Here's what interviewers actually score and why good devs fail it.

A beginner 2FA login stack for a US/EU SaaS can use SMS OTP, but reliability depends on the queue...

"Given an integer array nums, return true if any value appears at least twice in the array, and...

The Problem Given nums list and k operations, where one operation increments one element...

XGBoost Introduction: XGBoost XGBoost is a tree-based algorithm. It is a...

Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is...

I spent the last few months building visual walkthroughs for data structures and algorithms. Not...

Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is...

Hoi hoi! I’m @nyaomaru, a frontend engineer who struggles to make game sounds. 😿 Have you used DSA...

A symptom checker that only reads one message and immediately names a diagnosis is not doing anything...

Today I started experimenting with Tree-sitter. I had heard the name before, but I had never...

Imagine you are running a website with 100 million registered users. Every time someone enters a...

La forma del problema Un directorio es una superficie: el miembro lo abre y adivina. Un...

The Quest Begins (The "Why") I still remember the first time I saw a dynamic programming...

Recursion is where people decide they're 'not a math person' — because it's an invisible, moving process taught with static code. Animate the stack growing and

Data structures are taught as static diagrams for things that move. AlgoVerse turns algorithms into animated 3D scenes you can watch think.

Navigating the Infinite: How HNSW Helps Us Find Needles in a Haystack (of...

I recently built WordScrambler, a free tool for unscrambling letters and solving anagrams, mostly out...

I didn't have an impressive LeetCode profile. I wasn't a club president. I didn't have a stack of...

The Quest Begins (The "Why") Honestly, I still remember the first time I opened LeetCode...

The problem that looks simple until the whitespace shows up You open LeetCode 151 —...

"Nearby" sounds like a simple feature. Calculate the distance between the user and every...

The Quest Begins (The “Why”) I still remember the first time I stared at a binary tree...

So, recently I started working with the Qiskit, a python library for quantum computing. Thankfully,...

The Sliding Window pattern is one of the most vital algorithmic techniques for optimizing array and...

Have you ever wondered why 𝑮𝒊𝒕 is so smart at detecting changes, even with the smallest tweaks or...

The Quest Begins (The "Why") I was knee‑deep in a coding interview when the interviewer...

I had a ranking problem that looked trivial and turned out to have the wrong shape. Contexto is a...

Why Last-Click Attribution Breaks Down at Scale (and How to Fix It) In performance...

Introduction Your program keeps creating objects. Every function call, every loop...

An O(1) space alternative to the classic Rearrange Array Alternately problem, using repeated suffix reversal instead of the usual modulo trick.

Every 15-puzzle implementation eventually hits the same quiet question: given a starting arrangement,...

I wanted to add a crossword to my site's games, generated differently every round instead of pulled...

Hi everyone 👋 Over the past few months I’ve been working on a small optimization engine for the...

Interview prep usually fails from missing rhythm, not missing problems. I had study plans, LeetCode lists, and scattered notes — but no single system that turne

TL;DR: I ported Python's natsort library to Rust for Port Mortem 2026. Writing the sorting algorithm...

You can find hundreds of tutorials explaining the Extended Boyer-Moore Voting Algorithm. I won't bore...

"A Trie isn't designed to store words. It's designed to make finding everything that shares the same...

Btw , here’s a fun fact: while some people build projects on 64-core monsters with 128 GB of RAM,...

You know that Array.prototype.reduce you've used a thousand times to sum numbers? It's lying to...

We spend hours in feeds that know everything about us, yet leave us in absolute emptiness. Modern...

Bucket sort is a comparison-based sorting algorithm. A bucket sort is helpful when the input array is...

The Two Pointers pattern is one of the most fundamental algorithmic techniques for solving array and...

The Quest Begins (The "Why") I remember staring at a coding challenge on a lazy Sunday...

A while back I wanted to build the classic "paste a list of names, get N even groups" tool — the kind...

If you've solved enough competitive programming problems, you've probably written a segment tree more...