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Computer Programming

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Revision of Python HashMaps and Their Use in Practice

Enhance your comprehension and use of hashmap data structures while focusing on its application in counting and aggregation tasks. This exploration will deepen your understanding of their efficient data access and manipulation capabilities.

Python

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4 lessons

20 practices

4 hours

Course details

Essentials of HashMaps in Python

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Update the Library Catalog Entry

Library Catalog Error Correction

Check Book Availability in Library Catalog

Update and Access Elements in a Library Catalog Dictionary

Updating a Library Catalog Using HashMaps in Python

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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