Mastering Hashes, Two Pointers, and Additional Algorithms in Ruby

Computer Programming

Explore key programming algorithms involving Hashes, Sets, and two-pointer techniques. This course will boost your skills in optimizing data structures and refining your problem-solving strategies.

Ruby

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5 lessons

15 practices

3 hours

Course details

Complexity Analysis and Optimization in Ruby

Preview

Calculate Total Points Between Towns in Integerland

Finding the Smallest Absolute Difference in an Array

Optimized Replacement in Arrays

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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