Minimum Conference Rooms for a Day's Schedule
Asked at Goldman Sachs · Coding Questions · Difficulty: Medium · Last asked Oct 16, 2026
A building has a set of meetings planned for one day, each with a start time and an end time. Every meeting needs a whole room to itself for its entire duration, and a room can host only one meeting at a time. Work out the smallest number of rooms that lets every meeting take place.
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