JS.16.07 JuniorCore — asked often

Array/collection utilities

Comes up in: Coding

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

chunk, groupBy, uniqBy, intersection, zip, shuffle (Fisher–Yates), sortBy multiple keys

Words you will know

Fisher–Yates

What you will practise

implement 7 utilities (warm-up set)

Interview questions this answers

Implement groupBy and chunk.