1. Can you please write the following program in Python 3? Also, please write the UML and show all output(s)? Write the test program also.

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

The private data fields startTime and endTime with get methods.

A constructor that initializes startTime with the current time.

A method named start() that resets the startTime to the current time.

A method named stop() that sets the endTime to the current time.

A method named getElapsedTime() that returns the elapsed time for the stop watch in milliseconds.

Draw the UML diagram for the class, and then implement the class.

Write a test program that measures the execution time of adding numbers from 1 to 1,000,000.