
EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
6th Edition
ISBN: 8220102010314
Author: Horstmann
Publisher: YUZU
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Question
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.
- Define a “randomIntArray” method.
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.
- Define a “sort()” method.
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.
- Define a “sort()” method.
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.
- Define a constructor “StopWatch()”.
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.
- ○ Define the “main()”.
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Chapter 17 Solutions
EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
Ch. 17.1 - Prob. 1SCCh. 17.1 - Prob. 2SCCh. 17.1 - Prob. 3SCCh. 17.1 - Prob. 4SCCh. 17.1 - Prob. 5SCCh. 17.1 - Prob. 6SCCh. 17.1 - Prob. 7SCCh. 17.2 - Prob. 8SCCh. 17.2 - Prob. 9SCCh. 17.2 - Prob. 10SC
Ch. 17.2 - Prob. 11SCCh. 17.2 - Prob. 12SCCh. 17.3 - Prob. 13SCCh. 17.3 - Prob. 14SCCh. 17.3 - Prob. 15SCCh. 17.3 - Prob. 16SCCh. 17.3 - Prob. 17SCCh. 17.3 - Prob. 18SCCh. 17.4 - Prob. 19SCCh. 17.4 - Prob. 20SCCh. 17.4 - Prob. 21SCCh. 17.4 - Prob. 22SCCh. 17.4 - Prob. 23SCCh. 17.4 - Prob. 24SCCh. 17.5 - Prob. 25SCCh. 17.5 - Prob. 26SCCh. 17.5 - Prob. 27SCCh. 17.5 - Prob. 28SCCh. 17.5 - Prob. 29SCCh. 17.5 - Prob. 30SCCh. 17.6 - Prob. 31SCCh. 17.6 - Prob. 32SCCh. 17.6 - Prob. 33SCCh. 17.6 - Prob. 34SCCh. 17.6 - Prob. 35SCCh. 17.7 - Prob. 36SCCh. 17.7 - Prob. 37SCCh. 17.7 - Prob. 38SCCh. 17.7 - Prob. 39SCCh. 17.7 - Prob. 40SCCh. 17 - Prob. 1RECh. 17 - Prob. 2RECh. 17 - Prob. 3RECh. 17 - Prob. 4RECh. 17 - Prob. 5RECh. 17 - Prob. 6RECh. 17 - Prob. 7RECh. 17 - Prob. 8RECh. 17 - Prob. 9RECh. 17 - Prob. 10RECh. 17 - Prob. 11RECh. 17 - Prob. 12RECh. 17 - Prob. 13RECh. 17 - Prob. 14RECh. 17 - Prob. 16RECh. 17 - Prob. 18RECh. 17 - Prob. 19RECh. 17 - Prob. 20RECh. 17 - Prob. 21RECh. 17 - Prob. 22RECh. 17 - Prob. 23RECh. 17 - Prob. 24RECh. 17 - Prob. 25RECh. 17 - Prob. 26RECh. 17 - Prob. 27RECh. 17 - Prob. 28RECh. 17 - Prob. 1PECh. 17 - Prob. 2PECh. 17 - Prob. 3PECh. 17 - Prob. 4PECh. 17 - Prob. 5PECh. 17 - Prob. 6PECh. 17 - Prob. 7PECh. 17 - Prob. 8PECh. 17 - Prob. 9PECh. 17 - Prob. 10PECh. 17 - Prob. 11PECh. 17 - Prob. 12PECh. 17 - Prob. 13PECh. 17 - Prob. 1PPCh. 17 - Prob. 2PPCh. 17 - Prob. 3PPCh. 17 - Prob. 4PPCh. 17 - Prob. 5PPCh. 17 - Prob. 6PPCh. 17 - Prob. 7PPCh. 17 - Prob. 8PPCh. 17 - Prob. 9PPCh. 17 - Prob. 10PPCh. 17 - Prob. 11PP
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