Computing time results for Heap sort and Merge sort Program plan: ArrayUtil.java: Include the required header file. Define the class “ArrayUtil”. Define a “randomIntArray” method. This function generates random number for sorting Define a “swap()” method. This function swaps the two entries of an array. MergeSorter.java: Define the class “MergerSorter”. Define a “sort()” method. This sorts an array using merge sort. Define a “merge()” method. This function merge the two sorted arrays into an array. HeapSorter.java: Define a class “HeapSorter”. Define a “sort()” method. This function sorts the given array using selection sort. Define a “fixHeap()” method. This function confirms the heap property for a subtree. Ensures that the children nodes fulfil the heap property. Define a “getLeftChildIndex()” method. This returns the left child of the subtree. Define a “getRightChildIndex()” method. This returns the right child of the subtree. StopWatch.java: Define a class “StopWatch”. Define a constructor “StopWatch()”. This generates the stopwatch in stopped state. Define a “start()” function. This starts the stopwatch. Define a “stop()” function. This stops the stopwatch and add this time to elapsed time. Define a “getElapsedTime()”. This returns the total elapsed time. Define a “reset()” function. This resets the elapsed time to 0 and “isRunnning” to false. SorterTimer.java: Define the class “SorterTimer”. ○ Define the “main()”. Create Scanner object as “in”. Read the input from the user for array size. Generate a random array using “ArrayUtil” class. Create an object for “StopWatch” as “timer”. Call the “Stopwatch” member function “start()”. Next call the “sort()” function from MergeSorter. Then stop the stopwatch using “stop()” function. Print the value of time taken by merge sort. Create an object for “StopWatch” as “timer”. Call the “Stopwatch” member function “start()”. Next call the “sort()” function from “HeapSorter”. Then stop the stopwatch using “stop()” function. Print the value of time taken by heap sort.

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Chapter 17, Problem 13PE

Program Plan Intro

Computing time results for Heap sort and Merge sort

Program plan:

ArrayUtil.java:

Include the required header file.

Define the class “ArrayUtil”.

Define a “randomIntArray” method.

This function generates random number for sorting

Define a “swap()” method.

This function swaps the two entries of an array.

MergeSorter.java:

Define the class “MergerSorter”.

Define a “sort()” method.

This sorts an array using merge sort.

Define a “merge()” method.

This function merge the two sorted arrays into an array.

HeapSorter.java:

Define a class “HeapSorter”.

Define a “sort()” method.

This function sorts the given array using selection sort.

Define a “fixHeap()” method.

This function confirms the heap property for a subtree.

Ensures that the children nodes fulfil the heap property.

Define a “getLeftChildIndex()” method.

This returns the left child of the subtree.

Define a “getRightChildIndex()” method.

This returns the right child of the subtree.

StopWatch.java:

Define a class “StopWatch”.

Define a constructor “StopWatch()”.

This generates the stopwatch in stopped state.

Define a “start()” function.

This starts the stopwatch.

Define a “stop()” function.

This stops the stopwatch and add this time to elapsed time.

Define a “getElapsedTime()”.

This returns the total elapsed time.

Define a “reset()” function.

This resets the elapsed time to 0 and “isRunnning” to false.

SorterTimer.java:

Define the class “SorterTimer”.

○ Define the “main()”.

Create Scanner object as “in”.

Read the input from the user for array size.

Generate a random array using “ArrayUtil” class.

Create an object for “StopWatch” as “timer”.

Call the “Stopwatch” member function “start()”.

Next call the “sort()” function from MergeSorter. Then stop the stopwatch using “stop()” function.

Print the value of time taken by merge sort.

Create an object for “StopWatch” as “timer”.

Call the “Stopwatch” member function “start()”.

Next call the “sort()” function from “HeapSorter”. Then stop the stopwatch using “stop()” function.

Print the value of time taken by heap sort.

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