Software Engineering

2,224 learners

Interview Practice with Classic Coding Questions in Java

This course focuses on classic coding questions commonly asked in technical interviews. You will practice implementing algorithms for problems such as searching in a matrix, rotating an array, and finding the longest common prefix. Master these algorithms to strengthen your coding skills and excel in technical interviews.

Java

See path

5 lessons

23 practices

3 hours

Course details

Simple Matrix Practice in Java

Preview

Toeplitz Matrix Validator Task

Counting Smaller Integers in a Sorted Matrix

Finding Min and Max on the Secondary Diagonal

Finding the Row Containing the Target in a Sorted Matrix

Previous Course Next Course: Getting Deep into Complex Algorithms for Interviews with Java

Turn screen time into skills time

Practice anytime, anywhere with our mobile app.

Join the 1M+ learners on CodeSignal

Be a part of our community of 1M+ users who develop and demonstrate their skills on CodeSignal

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

Interview Practice with Classic Coding Questions in Java

Course details

Unit 14 practices32 min

Unit 25 practices38 min

Unit 36 practices44 min

Unit 44 practices32 min

Unit 54 practices32 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community