Foundation·Concept·2 min read

JavaScript DSA basics

Practice this question

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.


Adapted from 16_DSA_JAVASCRIPT.md · “1. JavaScript DSA basics”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.