This path is focused on helping you understand how to choose optimal algorithms and data structures for different problems, how to apply them, and how to understand their reasoning. Topics covered will include hash tables, recursion, and linked lists.

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Course 1

Indexed Arrays, Dictionaries, and Sets in PHP

6 lessons

15 practices

Delve into Hashing, HashMaps, and HashSets in PHP with this specialized course, exploring implementation, practical applications, and algorithmic problem-solving. Gain hands-on experience to confidently address data analysis and management challenges.

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Course 2

Advanced Data Structures - Stacks and Queues in PHP

5 lessons

Course 3

Fundamental Data Structures - Linked Lists in PHP

4 lessons

Course 4

Sorting and Searching Algorithms

7 lessons

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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

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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

This advanced course furthers into the understanding and application of Stacks and Queues in PHP. It explicates the inner workings, implementation, and complexities of these structures, with their effectiveness for resolving interview-focused algorithmic coding conundrums.

This foundational course dives into the understanding and application of Linked Lists in PHP. It elucidates the inner workings, implementation, and complexities of Linked Lists, along with their effectiveness for solving interview-focused algorithmic coding challenges.

This is a comprehensive course curated to convey fundamental and advanced understanding of sorting and searching algorithms. The course guides through different types and functionality of these algorithms, their complexity analysis, and the practical application in solving complex programming problems.