Software Engineering

17,632 learners

Learning Simple Data Structures in Java

Explore Java's native data structures like arrays, ArrayLists, and HashMaps. This course strengthens your skills to handle varying data sizes and complexities in coding.

Java

See path

5 lessons

26 practices

2 hours

Course details

Exploring Java Arrays: Creation, Accessing, and Properties

Preview

Exploring Array Length and Element Access in Java

Tracking Inventory with Multidimensional Arrays in Java

Adjust the Code to Access the Last Compartment

Interstellar Inventory Display Fix

Add Sports Ball Counter to Inventory Management System

Managing the Intergalactic Sports Inventory in Java

Previous Course Next Course: Iterations and Loops in Java

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Learning Simple Data Structures in Java

Course details

Unit 16 practices22 min

Unit 25 practices19 min

Unit 35 practices19 min

Unit 45 practices19 min

Unit 55 practices19 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community