Articles by Tag #arrays
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DSA Fundamentals: Arrays & Strings - From Theory to LeetCode Practice
Data Structures and Algorithms form the foundation of efficient programming. Today, we'll dive deep...
Sliding Window Maximum: The Monotonic Queue Trick Explained
Beginners copy the snippet without understanding why elements are popped. Here's the labeled step-by-step breakdown.
Monotonic Stacks: The Pattern That Makes 'Next Greater' Problems Easy
Keep elements in sorted order so the top tells you the next smaller or greater value. Sound confusing? Here's the visual breakdown.
Off-By-One Errors on LeetCode: Why They Happen and How to Stop Them
Your brain counts differently than computers index. Here's why these bugs happen and how to spot them before running code.
Prefix Sums Keep Breaking? This Visual Guide Fixes That
Indices, ranges, and hash maps collide during interviews. Here's how to visualize prefix sums so subarray problems feel repeatable.
Prefix Sum Technique on LeetCode for Beginners: From Intuition to Patterns
Prefix sums turn many O(n²) subarray problems into clean O(n) solutions. Learn the intuition, common patterns, and mistakes LeetCode beginners make...
JavaScript Arrays and Objects - Complete Guide
Arrays and objects are the fundamental data structures in JavaScript. Understanding how to work with...
What I learnt about arrays and pointers in C (As a refresher)
Where it started I've been procrastinating about learning DSA for a while now but finally...
The Confusing World of Array Deletion in JavaScript
One of JavaScript's most controversial, yet quietly discussed subjects which goes beyond implicit...
What does it mean to flatten an array?
When you have an array that has multiple dimensions, it might be referred to as a 2D or 3D (etc)...
🔥 JavaScript Arrays Explained with Practical Code Examples
A no-fluff guide to JavaScript arrays using pure code examples to help you master the basics fast.
Sorting 0s, 1s, 2s: Stop Memorizing the Dutch National Flag Algorithm
Three pointers is confusing. Learn the specific 'Partition Invariant' that makes this problem impossible to forget.
Off-By-One Errors Are Ruining Your Interviews: The 'Closed-Open' Fix
One wrong `<` sign can fail an interview. Stop guessing boundaries and learn the 'Inclusive-Exclusive' rule that prevents every off-by-one error.
Array Traversal Patterns
Array Traversal An array is a data structure that stores multiple elements (usually of the...
JavaScript Snippets: Split & Map
Ever stumbled across this little snippet of JavaScript code and wondered what mystical sorcery is...
Understanding Array Traversal Patterns in JavaScript
When working with arrays, one of the most common tasks is moving through and visiting each element in...
Why You Keep Getting 'Index Out of Bounds' (And How to Stop It Forever)
Is it `<` or `<=`? Stop guessing. Here is the systematic 'Boundary Check' technique to eliminate off-by-one errors for good.
Two Pointers Intuition for LeetCode Beginners: A Step-by-Step Visual Guide
Two pointers show up everywhere on LeetCode, but many beginners memorize patterns without understanding why they work. This guide builds your intui...
JavaScript Arrays
🔢 JavaScript Arrays: The Complete Guide to Methods Arrays are one of the most fundamental...
Make Backtracking 10x Faster: The Art of 'Aggressive Pruning'
Brute force won't pass the time limit. Learn how to sort, prune, and break early to turn a TLE backtracking solution into an Accepted one.
Arrays in Java: A Deep Dive
Arrays are a fundamental data structure in Java, used to store collections of elements of...
Arrays and Vectors Explanation for app.codility.com/programmers in C++
An array is a list structure that can be used to store many items in one place. In C++, the items...
Master These 5 JavaScript Array Methods for Cleaner Code
Master These 5 JavaScript Array Methods for Cleaner Code AI generated by Bhindi...
DSA - Arrays/Strings - Técnica Two Pointers (Dois Ponteiros) — Guia Completo para Entrevistas Técnicas
O que é a técnica Two Pointers e sua intuição Two Pointers é uma técnica que utiliza dois...
JavaScript Create Array with n Elements
Create a JavaScript array with n elements using Array(n).fill(), Array.from(), spread+map, or loops for predictable, defined entries.
LeetCode — 1791. Find Center of Star Graph
It’s an easy problem with the description being: There is an undirected star graph consisting of n...
Mastering Arrays in C# for Coding Interviews
🧱 Arrays in C# — A Practical Guide for Interview Preparation Arrays are one of the most...
LeetCode — 2161. Partition Array According to Given Pivot
This is a medium problem with the description being: You are given a 0-indexed integer array nums...
JavaScript Array Append: Methods and Best Practices
Learn how to append elements to JavaScript arrays using push, concat, spread operator, and more for clean and efficient code.
Optimizing Memory Allocation: Zero-Length Arrays vs Pointers in C Programming
Memory allocation is a critical aspect of C programming, and developers often face challenges when...