AAnnetinhtml-portfolio.hashnode.dev·1d ago · 5 min read Codeforces Journey #3: Learning Arrays Through Beginner-Friendly ProblemsAfter solving my first 20 Codeforces problems, I decided to focus on one of the most fundamental topics in Data Structures—Arrays. Instead of randomly solving problems, I chose problems that helped me00
SGSergio González Téllezinevankhandev.hashnode.dev·2d ago · 2 min readWhy do many people learn databases as collections of tables, yet struggle to understand the systems those databases represent?SEED-010 PROBLEM Why do many people learn databases as collections of tables, yet struggle to understand the systems those databases represent? INSIGHT A database is not a place where tables are sto00
VVVidit Vatsindsa-decoded.hashnode.dev·3d ago · 5 min readLC-15 3Sum ProblemGiven an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums[k] == 0. Notice that the solution set must not conta00
VVVidit Vatsindsa-decoded.hashnode.dev·4d ago · 2 min readLC 167 Two Sum II - Input Array Is SortedGiven a 1-indexed array of integers numbers that is already sorted in non-decreasing order, find two numbers such that they add up to a specific target number. Let these two numbers be numbers[index1]00
AAnnetinhtml-portfolio.hashnode.dev·3d ago · 4 min readArrays in Python: A Beginner's Guide to Common OperationsArrays are one of the first data structures every programmer learns. They allow us to store multiple values in a single variable and access them efficiently using indexes. In Python, we commonly use l00
JNJohans Neirainjohansen.hashnode.dev·5d ago · 4 min readJavaScript has no sorted containers. I built one for TypeScriptJavaScript ships with Array, Set, and Map — but nothing that keeps its elements sorted as you insert. If you've ever built a leaderboard, an order book, or anything that answers "give me the items bet00
LWLearn with HJinblog.hardeepjethwani.com·5d ago · 29 min read🔗 Linked Lists in the Age of AIA beginner-friendly and humorous guide to linked lists, nodes, references, operations, time complexity, cycle detection, reversal, and practical AI use cases with Python. 😂 Everyone Knows Only the N23KJ
MMMibhur Mahajaninmibhurdev.hashnode.dev·6d ago · 5 min readDay 1 of My DSA Journey: From Flowcharts to My First Java Code (And an Elegant Math Trick!)Day 1 of My DSA Journey: From Flowcharts to My First Java Code (And an Elegant Math Trick!) The journey of a thousand miles begins with a single step — or in the case of a Computer Science student, a 00
AFAll For Scienceinmidlantics.hashnode.dev·6d ago · 10 min readSapixDB: The database revolution no one is talking about — and why it changes everythingFifty years ago, Edgar Codd invented the relational model. Tables. Rows. SQL. JOIN. It was a revolution. And for fifty years, nothing has genuinely replaced it. Until now. I want to tell you about wha00
LWLearn with HJinblog.hardeepjethwani.com·Jul 12 · 27 min read🧠🏗️ Classes & Objects in the Age of AIA beginner-friendly guide to Python classes, objects, inheritance, encapsulation, composition, and how object-oriented programming powers real AI systems. Artificial intelligence can generate text, un32A
