Java Reference
In-Depth Information
The return value is an instance of
Location
. Write a test program that prompts
the user to enter a two-dimensional array and displays the location of the largest
element in the array. Here is a sample run:
3 4
Enter the number of rows and columns in the array:
Enter the array:
23.5 35 2 10
4.5 3 45 3.5
35 44 5.5 9.6
The location of the largest element is 45 at (1, 2)
*8.14
(
Stopwatch
) Design a class named
StopWatch
. The class contains:
■
Private data fields
startTime
and
endTime
with get methods.
■
A no-arg 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
stopwatch in milliseconds.
Draw the UML diagram for the class and then implement the class. Write a test
program that measures the execution time of sorting 100,000 numbers using selec-
tion sort.
