Day 65 · Wednesday, 7 October 2026
SORTBY can carry two columns along for a sort keyed on a third, so the call log it reads from never has to move.
You coordinate the on-call maintenance team for a 40-unit apartment building. Requests get logged in the order residents call them in, which is not the order the tech should work them — a leaking faucet phoned in first thing shouldn't sit ahead of a gas smell reported an hour later. Each request carries a priority: 1 for an emergency, 2 for urgent, 3 for routine. The office needs the call log left exactly as it came in, since that's the record they keep, and a separate work order built from it. In F2, use SORTBY to list the unit and issue from A2:B7, ordered by the priority in C2:C7, most urgent first. The queue should spill from F2 down to F7.
A new exercise every morning, plus every day that came before it — a back catalogue that grows by one a day, whether or not you were here for it.
The last 14 days. Today's challenge is free while your streak is alive; Pro opens every past day too.