Computer Programming
9 learners
Interview Practice - Advanced Problem Solving
In this course, which is the culmination of our preparation program, you will engage in focused practice on complex programming problems that mimic those often given during technical interviews. The course is designed to reinforce your knowledge, speed, and confidence in tackling challenging questions under interview-like conditions.
Kotlin
2 lessons
10 practices
2 hours
Debugging and Troubleshooting
Lessons and practices
Library Management System Enhancement
Fitness Tracking System Enhancement in Kotlin
Library Management System with Reservation and Notification Functionality
Enhancing Social Media Interaction System with Private Groups
Managing Task Dependencies in a Task-Tracking System
Task Management System with Undo and Category Features
Enhancing Email System with Undo and Logout Features
Note-Taking Application with Version Control and Sharing
Social Media Platform with Post and Comment Editing and Rollback Features
Enhancing In-Memory Ticket Management System in Kotlin
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Our built-in AI guide and tutor, Cosmo, prompts you with challenges that are built just for you and unblocks you when you get stuck.
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
+9
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
+8
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

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