What is Array?
In code, an ordered collection of values in one variable, accessed by position.

ids[2] → 31 · counts from 0
In real work
Review whether the array of user IDs stays ordered the way the API contract requires.
In the illustration
Six values sit in their cups in order; the picker slides to the cup engraved 2 (the third one) and lifts its value.
Walk through what this array holds in your coding agent at each step of the loop, with a two-line example input.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.





