Udemy
Java Data Structures & Algorithms + LEETCODE Exercises
DSA + LEETCODE for Coding Interviews — Clear, Step-by-Step Animated Walkthroughs!
Java Data Structures & Algorithms + LEETCODE Exercises is a beginner-level online course from Udemy in Data Structures & Algorithms. It is structured in 20 modules with 8 stated learning outcomes. It is free to enrol, and a certificate is available on completion. Learners rate it 4.6/5 from 14.7K ratings on Udemy, with 107K enrolled.
Part of our Data Structures & Algorithms courses collection, where we compare it against 4 other courses.
Course highlights
| Provider | Udemy |
| Level | Beginner |
| Mode | Self-paced |
| Language | English |
| Certificate | Yes — shareable certificate |
| Rating | 4.6★ (14.7K reviews) |
| Learners | 107K |
| Price | Free Free |
What you’ll learn
Level and time commitment
Skills you’ll gain
What this course covers
20 modulesThe 20-part outline Udemy publishes for this course.
Module 1 · Introduction
Module 2 · Big O
Module 3 · Classes & References
Module 4 · Linked Lists
Module 5 · <> LL: Coding Exercises
Module 6 · <> LL: Interview / LeetCode Exercises
Module 7 · Doubly Linked Lists
Module 8 · <> DLL: Coding Exercises
Module 9 · <> DLL: Interview / LeetCode Exercises
Module 10 · Stacks & Queues
Module 11 · <> S&Q: Coding Exercises
Module 12 · <> S&Q: Interview / LeetCode Exercises
Module 13 · Trees
Module 14 · <> BST: Coding Exercises
Module 15 · <> BST: Interview / LeetCode Exercises
Module 16 · Hash Tables
Module 17 · <> HT: Coding Exercises
Module 18 · <> HT: Interview / LeetCode Exercises
Module 19 · Graphs
Module 20 · <> Graph: Coding Exercises
What learners rate it
Rated 4.6/5 by 14.7K learners on Udemy (checked 25 Aug 2026).
This rating is collected by Udemy from its own enrolled learners. We reproduce it as reported and do not accept paid or incentivised reviews. See it on Udemy →
Compiled by the 10courses editorial desk. Fees, ratings, duration and certificate details for the 1 course shown are read directly from Udemy course pages — we never estimate a price or a rating. Last verified 25 August 2026.
How we compare and rank courses · Our review policy · Affiliate disclosure
Compare with alternatives
Same topic, different trade-offs — here's who runs each one and what it's best at.
| Course | Provider | Rating | Price | Duration | Why pick this one |
|---|---|---|---|---|---|
| Java Data Structures & Algorithms + LEETCODE Exercises This |
Udemy
|
4.6★ | Free | Free — and still gives a certificate | |
| Data Structures and Algorithms |
 Coursera
|
4.6★ | Check price | 5 months | Highest rated (4.6★ from 16.8K reviews) |
| Learn Data Structures and Algorithms with Python | Codecademy | 4.4★ | $23.99 | 26h | Cheapest paid option ($23.99) |
| Data Structures and Algorithms In Java ( DSA ) |
Udemy
|
4.2★ | Free | Free — certificate included |
Common questions
Is Java Data Structures & Algorithms + LEETCODE Exercises free?
Yes. Udemy lists it as free to enrol. A certificate is available on completion — providers often charge separately for the certificate even when the course itself is free, so check the fee on the provider page before you count on it.
Does Java Data Structures & Algorithms + LEETCODE Exercises come with a certificate?
Yes — Udemy lists a certificate on completion. It is a course certificate, not a formal qualification or university credit.
Is Java Data Structures & Algorithms + LEETCODE Exercises suitable for beginners?
Yes. Udemy lists it at Beginner level, so no prior experience in the subject is assumed.
What does Java Data Structures & Algorithms + LEETCODE Exercises cover?
It is organised into 20 modules, starting with Introduction and going on to Big O, Classes & References, Linked Lists, <> LL: Coding Exercises, among others. The full outline is on this page.