C++

1. (Stopwatch) Design a class named StopWatch. The class contains:

   • Private data fields startTime and endTime with appropriate get functions.

   • A no-arg constructor that initialises 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 seconds.

     1. Draw the UML diagram for the class.

     2. Implement the class.

     3. Write a test program that measures the execution time of sorting 100000

        numbers using selectionSort. The output should be something like:

Generating 100000 random numbers... ... done. Now sorting the array... Sorting the array took: 11 s Press any key to continue