Coding interview exercises
Coding interview exercises
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Five minutes, start to finish: reading the task, asking the interviewer, running tests, fixing two bugs and the questions at the end. Prefer to read? The same steps, written out.
Design a hub for independent building sensors (temperature, motion, door) that report readings as values change.
You're on call for an in-house load balancer that spreads API traffic across a pool of backend servers.
Route notifications to each user through their preferred channel, such as email, SMS or push.
Build a supermarket checkout that scans products and reports the running cart total at any point.