Learn Data Structures & Algorithms in JavaScript
Study DSA with JavaScript: arrays, linked lists, trees, graphs, sorting, Big O. Tutorials, exercises, and cheat sheets.
16 resources available
Tutorials
What Are Algorithms? Your First Step Into Programming Logic
Learn what algorithms are through everyday examples, build your first algorithm in 5 minutes, and understand the foundation of all programming
Introduction to Arrays: The Foundation of Data Structures
Master arrays - the most fundamental data structure in programming. Learn creation, manipulation, and common patterns with real-world examples
Why Sorting Matters: The Secret to 700x Faster Search
Discover why sorting is one of the most important concepts in programming. See how it makes search 700x faster with real-world examples from Google, Instagram, and e-commerce
Simple Sorting Algorithms: Bubble Sort & Selection Sort
Learn how sorting algorithms work by implementing Bubble Sort and Selection Sort. Watch them in action with interactive visualizations and understand which algorithm is more efficient
Understanding Time Complexity: Your Secret Weapon for Coding Interviews
Master Big O notation and time complexity analysis - the foundation for writing efficient code and acing technical interviews
Master the Two-Pointer Technique: Solve Array Problems in O(n) Time
Transform your array problem-solving skills from brute-force O(n²) to elegant O(n) solutions using the two-pointer technique
Master the Sliding Window Pattern: Transform O(n²) to O(n)
Learn the sliding window technique to solve substring and subarray problems efficiently. Transform nested loops into elegant single-pass solutions that interviewers love.
Hash Tables Deep Dive: From O(n) to O(1) Lookups
Master hash tables - the data structure behind JavaScript objects and Maps. Learn how they achieve constant-time lookups, handle collisions, and power real-world applications like caches and databases.
Quizzes
What Are Algorithms? Quiz
What Are Algorithms? Your First Step Into Programming Logic
Introduction to Arrays Quiz
Introduction to Arrays: The Foundation of Data Structures
Why Sorting Matters Quiz
Why Sorting Matters: The Secret to 700x Faster Search
Simple Sorting Algorithms Quiz
Simple Sorting Algorithms: Bubble Sort & Selection Sort
Time Complexity & Big O Notation Quiz
Understanding Time Complexity: Your Secret Weapon for Coding Interviews
Two-Pointer Technique Quiz
Master the Two-Pointer Technique: Solve Array Problems in O(n) Time
Sliding Window Pattern Quiz
Master the Sliding Window Pattern: Transform O(n²) to O(n)
Hash Tables Deep Dive Quiz
Hash Tables Deep Dive: From O(n) to O(1) Lookups