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LESSON 20 / 75·2 min readFoundation

JavaScript DSA basics

Should knowConcept lesson
01 Understand02 Recall03 Prepare

Common JavaScript structures

  • Arrays for indexed data
  • Map for key-value pairs
  • Set for unique values
  • Object for dictionary-like access
  • Stack implemented using arrays
  • Queue implemented using arrays or shift/push
  • PriorityQueue using custom heap logic

Key principle

Use the simplest structure that matches the problem requirement.

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JavaScript DSA basics

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Common JavaScript structures

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JavaScript DSA basics

Data Structures & Algorithms·JavaScript implementations

Common JavaScript structures

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Adapted from 16_DSA_JAVASCRIPT.md · “1. JavaScript DSA basics”. Examples are study fragments; framework behavior can depend on your version.