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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Curiously, while I am not sure what each of my students will do with the sort requirement - other than doing one; <span style="font-size: 10pt;">I have advised them to study what
the programming language actually does.</span>
<div>I was very interested myself to see that Java arrays.sort utilises three different sorts according to how it is used. Selection, quick or merge.</div>
<div>The PHP inbuilt sort merely uses quick sort apparently.</div>
<div>So I would suggest that any student who does not use hand-coded sorts (which are actually redundant unless you are programming your own specialist binary tree or something - and WHO does that? - possibly some google experts) should be able to tell us in
their report - to outline WHY the sort they use is good for their data and more efficient and better than a bubble sort which is easy to program.</div>
<div>Dave<br>
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<div id="divRpF973729" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> sofdev-bounces@edulists.com.au [sofdev-bounces@edulists.com.au] on behalf of Paragreen, Chris J [paragreen.chris.j@edumail.vic.gov.au]<br>
<b>Sent:</b> 28 July 2016 17:08<br>
<b>To:</b> Year 12 Software Development Teachers' Mailing List<br>
<b>Subject:</b> Re: [Year 12 SofDev] Query about marking SAT 2 criteria 6<br>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">“</span><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">but it is easy to demonstrate that quicksort is usually more efficient
than selection sort”</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Yes, but if you add an item to the end of a sorted list, a selection sort will be more efficient to re-sort the list than quicksort. So if student’s maintained
their data in a sorted state, I’d happily accept them to justify using a selection sort rather than a quicksort on this basis.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Oh, and I’ve encouraged my students to code their own sorting algorithm to give them access to more marks in the other coding criteria of the SAC. Of course,
if they want to use the built in sort, they’re welcome to!</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Chris</span><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif"> sofdev-bounces@edulists.com.au [mailto:sofdev-bounces@edulists.com.au]
<b>On Behalf Of </b>Robert Hallworth<br>
<b>Sent:</b> Thursday, 28 July 2016 3:25 PM<br>
<b>To:</b> Year 12 Software Development Teachers' Mailing List <sofdev@edulists.com.au><br>
<b>Subject:</b> Re: [Year 12 SofDev] Query about marking SAT 2 criteria 6</span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">This is my spin on this</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">“</span><span style="font-size:9.0pt; font-family:"Trebuchet MS",sans-serif; color:black">Skills in using a programming language<span class="apple-converted-space"> </span></span><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">”
this to me is a coding criteria so ..</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Documentation is the internal documentation</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Complex. I have told my students Quicksort</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">Sorting is a Science in itself and reasons for which sort to use get very complicated but it is easy to demonstrate that quicksort is usually more efficient
than selection sort</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D">I think this list pointed out
</span><a href="http://sorting.at/" target="_blank"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">http://sorting.at/</span></a><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> does a good job of visually comparing
sorts.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#365F91">kind regards</span></p>
<p class="MsoNormal"><b><i><span style="font-size:16.0pt; font-family:"Adobe Garamond Pro Bold",serif; color:#365F91"> </span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:16.0pt; font-family:"Adobe Garamond Pro Bold",serif; color:#365F91">Robert K Hallworth</span></i></b><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"></span></b></p>
<p class="MsoNormal"><span style="font-size:13.0pt; font-family:"Arial Narrow",sans-serif; color:#365F91">Director of Learning Technology</span><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt; font-family:"Arial Narrow",sans-serif; color:#365F91">Mobile:0431 892 398</span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif">
<a href="mailto:sofdev-bounces@edulists.com.au" target="_blank">sofdev-bounces@edulists.com.au</a> [<a href="mailto:sofdev-bounces@edulists.com.au" target="_blank">mailto:sofdev-bounces@edulists.com.au</a>]
<b>On Behalf Of </b>Tran, Vi V<br>
<b>Sent:</b> Thursday, 28 July 2016 2:55 PM<br>
<b>To:</b> Year 12 Software Development Teachers' Mailing List <<a href="mailto:sofdev@edulists.com.au" target="_blank">sofdev@edulists.com.au</a>><br>
<b>Subject:</b> [Year 12 SofDev] Query about marking SAT 2 criteria 6</span></p>
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<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Hi all,</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> I'm not sure if it has been answered on this edulist, but I have a question about
<strong><span style="font-family:"Tahoma",sans-serif">marking Criteria 6</span></strong> where it states "<strong><span style="font-family:"Tahoma",sans-serif">Documents the efficient use of a complex sorting algorithm in the solution".</span></strong></span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> </span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">From my interpretation does this mean that students HAVE to use a sorting algorithm (they can choose from insertion, bubble, selection or quick sort? )</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> </span></p>
<p><strong><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Complex means
</span></strong><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">- they can only choose from selection and quick sort ( and not insertion or bubble sort)?</span></p>
<p><strong><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Document means</span></strong><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> - they need to explain and justify why they used the particular
sorting algorithm? In terms of time complexity and usage of memory space?</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> </span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">I was wondering how others are marking this criteria.</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> </span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Thank you.</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"> </span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">From Vi.</span></p>
<p><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Mullauna College.</span></p>
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