Engrain by ByteRush

DSA.01.02 BeginnerCore — asked often

JavaScript for DSA

Comes up in: DSA

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

  • arrays as dynamic arrays
  • Map/Set for hashing
  • strings are immutable (build with arrays)
  • sorting numbers needs a comparator
  • no built-in heap/queue (write one
  • shift() is O(n))
  • integer overflow not an issue but precision is
  • recursion limits

Words you will know

dynamic arrayhash mapcomparator

What you will practise

  • 6 "which structure?" drills

Interview questions this answers

  • Why is array.shift() a bad choice for a queue in JavaScript?