To measure the performance of the insertion sort algorithm Program plan: In the file “ ArrayUtil.java ”, import necessary package, and create a class “ ArrayUtil”, Create “Random” object. Define the method “randomIntArray()”to create an array filled with random values. In the file “ InsertionSorter.java ”, create a class “ InsertionSorter”, Declare an array. Define the constructor. Define the method “sort()” to sort the array managed by this insertion sorter. In the file “ StopWatch.java ”, create a class “ StopWatch”, Declare private variable. Define the constructor to construct a stopwatch that is in the stopped state and has no time accumulated. Define the method “start()” to start the stopwatch, and time starts accumulating now. Define the method “stop()” to stop the stopwatch, and time stops accumulating and is added to the elapsed time. Define the method “getElapsedTime()” to return the total elapsed time. Define the method “reset()” to stop the watch and resets the elapsed time to 0. In the file “ InsertionSorterTimer.java”, create a class “InsertionSorterTimer”, Define the method, The size of an array is passed as command-line argument. Create random array. Create an object for “InsertionSorter”. Create an object for “StopWatch”. Call the method “start()” to start the timer. Call the method “sort()” to sort the array. Call the method “stop()” to stop. Print the elapsed time.

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Chapter 14, Problem 9PE

Program Plan Intro

To measure the performance of the insertion sort algorithm

Program plan:

In the file “ArrayUtil.java”, import necessary package, and create a class “ArrayUtil”,

Create “Random” object.

Define the method “randomIntArray()”to create an array filled with random values.

In the file “InsertionSorter.java”, create a class “InsertionSorter”,

Declare an array.

Define the constructor.

Define the method “sort()” to sort the array managed by this insertion sorter.

In the file “StopWatch.java”, create a class “StopWatch”,

Declare private variable.

Define the constructor to construct a stopwatch that is in the stopped state and has no time accumulated.

Define the method “start()” to start the stopwatch, and time starts accumulating now.

Define the method “stop()” to stop the stopwatch, and time stops accumulating and is added to the elapsed time.

Define the method “getElapsedTime()” to return the total elapsed time.

Define the method “reset()” to stop the watch and resets the elapsed time to 0.

In the file “InsertionSorterTimer.java”, create a class “InsertionSorterTimer”,

Define the method,

The size of an array is passed as command-line argument.

Create random array.

Create an object for “InsertionSorter”.

Create an object for “StopWatch”.

Call the method “start()” to start the timer.

Call the method “sort()” to sort the array.

Call the method “stop()” to stop.

Print the elapsed time.

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