(Stopwatch) Design a class named StopWatch. The class contains:
■ Private data fields startTime and endTime with get functions.
■ A no-arg constructor that initializes startTime with the current time.
■ A function named start() that resets the startTime to current time.
■ A function named stop() that sets the endTime to current time.
■ A function named getElapsedTime() that returns the elapsed time for the stop watch in milliseconds.
Draw the UML diagram for the class. Implement the class. Write a test program that measures the execution time of sorting 100000 numbers using selection sort.
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