TheLearningLoopData Structures & Algorithms
See how arrays, trees and hash maps behave as the data changes.
Covers arrays, stacks, queues, trees, sorting and more. Message queues such as Kafka are in System Design.
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Which data structure is fastest? It depends on what you ask it to do.
Every data structure answers one question: which operations must be fast? Every algorithm follows a handful of patterns. Read this before your first lesson.
Read the overview first →Learning path
Data Structures & Algorithms questions
Which lessons do I need for interviews?
The lessons marked "asked often" below are the ones that come up most frequently — start there if you are short on time.
What order should I learn them in?
Follow the learning path below; it is ordered from the most fundamental lesson to the most advanced.
How long does this topic take?
About 185 minutes in total, across 7 lessons.