instructions.md

Instructions

Your task is to build a stopwatch to keep precise track of lap times.

The stopwatch uses four commands (start, stop, lap, and reset) to keep track of:

1. The current lap's tracked time
2. Previously recorded lap times

What commands can be used depends on which state the stopwatch is in:

1. Ready: initial state
2. Running: tracking time
3. Stopped: not tracking time

Command	Begin state	End state	Effect
Start	Ready	Running	Start tracking time
Start	Stopped	Running	Resume tracking time
Stop	Running	Stopped	Stop tracking time
Lap	Running	Running	Add current lap to previous laps, then reset current lap
Reset	Stopped	Ready	Reset current lap and clear previous laps