Search lands in PR-5.1 (Pagefind).

Data Structures & Algorithms

Calendar Design

Online booking that rejects double- or triple-overlaps — the canonical intervals design series.

  1. Problem 01 My Calendar I Overlap test per booking: start < existing_end AND end > existing_start. 5 min
  2. Problem 02 My Calendar II Two layers: all bookings + known double-booked regions. 5 min
  3. Problem 03 My Calendar III Map timeline to delta counts; scan for peak concurrency after every booking. 5 min