[Year 12 SofDev] Past SD exams - pseudocode algorithms with errors - a collection - Updated with answers

Mon Oct 17 14:22:22 EST 2011

Hi Damien,

I think you're all fine except that "Until Ingredient_ID = Num_Ingredients" in the fourth last line. As Num_Ingredients is 3 this means the last pass is IngredientID3 rather than 4.
 Qty1 was set to zero when the array was set up.

Hope this helps
Heath

From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au] On Behalf Of ATKINSON-BUCK, Damien
Sent: Monday, 17 October 2011 12:05 PM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Past SD exams - pseudocode algorithms with errors - a collection - Updated with answers

Hi folks,
Can someone please help me out with q3b from the 2007 exam. Below is the algorithm, the question and the answers from the examiner's report. Even taking into account that the examiners switched the array indexes in the question, I still have issue when I desk check.
The algorithm works on the assumption that we essentially start by looking at IngredientID =2 which gives the result of zero
Then on the next pass we look at IngredientID = 3 which gives the result of 2
Then on the last pass we look at IngredientID = 4 which doesn't exist, so it returns a null value.
The examiner report says the answer would be 0, 0, 2 which I don't get.
I'm not sure if I've spent too long staring at these things and am chasing ghosts. Any help would be appreciated
Thanks
Damien

[cid:image001.png at 01CC8CD7.34B3FD10]

[cid:image002.png at 01CC8CD7.34B3FD10]
Examiners report
[cid:image003.png at 01CC8CD7.34B3FD10]

Damien Atkinson-Buck
Member of Academic Staff (Secondary)
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From: Nate Morris [mailto:N.Morris at kardinia.vic.edu.au]
Sent: Thursday, 22 September 2011 3:39 PM
To: sofdev at edulists.com.au
Subject: [Year 12 SofDev] Past SD exams - pseudocode algorithms with errors - a collection - Updated with answers

Hope this helps, just chucked in all the answers from your website Mark.

Nate Morris
Senior Teacher
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