Software Engineering

27,648 learners

Master Dictionaries, Two Pointers, and More Algorithms in Python

Delve into the essentials of optimal programming algorithms involving HashMaps, HashSets, and two-pointer techniques. Enhance your skills in data structure optimization and streamline problem-solving methods.

Python

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5 lessons

15 practices

3 hours

General Programming and Algorithms

Course details

Complexity Analysis: A Quick Reminder

Preview

Summing Integers Between Two Numbers

Finding Minimum Absolute Difference in an Array

Closest Pair Mapping in Arrays

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Faith Yim

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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

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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

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Jonathan Miller

Senior Machine Learning Engineer

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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

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

Master Dictionaries, Two Pointers, and More Algorithms in Python

Course details

Unit 13 practices39 min

Unit 23 practices39 min

Unit 33 practices39 min

Unit 43 practices39 min

Unit 53 practices39 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community