Free
Course

Java: Algorithms

Learn how to implement and analyze important algorithms in Java.

4.4 out of 5 stars
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11,194 learners enrolled
  • Skill level

    Beginner
  • Time to complete

    Approx. 7 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites

    1 course

About this course

This course is all about algorithms! We’ll start by looking into the concept of recursion — what does it mean for a method to call itself? Once we wrap our minds around this tricky concept, we’ll look at how to use recursion to solve some problems.

Next, we’ll start to think about how we can evaluate the effectiveness of our algorithms. There are so many ways to solve a single problem — how do you know if your solution is a good one? What does it even mean for one solution to be “better” than the other?

Finally, we’ll look at some of the most common sorting and searching algorithms. If you’re looking to sort a list of numbers, how would you do that? What about if you were trying to find a single word in the dictionary? We’ll write a few algorithms to solve these problems.

Syllabus

8 lessons • 0 projects • 6 quizzes
The platform

Hands-on learning

Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Animated demonstration of running code in Codecademy's learning environment

Java: Algorithms course ratings and reviews

4.4 out of 5 stars
60 ratings
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  • The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.
    Chris
    Codecademy Learner @ USA
  • I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.
    Rodrigo
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    John-Andrew
    Codecademy Learner @ USA

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Unlock additional features with a paid plan

  • Practice Projects

    Guided projects that help you solidify the skills and concepts you're learning.
  • Assessments

    Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.
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