[Year 12 SofDev] Programming Help

Stephen Rosicka Stephen.Rosicka at galen.vic.edu.au
Wed Apr 30 13:43:43 EST 2014 

Kevork,

I agree, I have created a few programming tasks for VB so far this year and would be happy to place them up on the sofdev site or, email them thru when I get time to collate them….

Stephen

From: Kevork KROZIAN <kkrozian at ringwoodsc.vic.edu.au<mailto:kkrozian at ringwoodsc.vic.edu.au>>
Reply-To: Year 12 Software Development Teachers' Mailing List <sofdev at edulists.com.au<mailto:sofdev at edulists.com.au>>
Date: Wednesday, April 30, 2014 at 12:55 PM
To: Year 12 Software Development Teachers' Mailing List <sofdev at edulists.com.au<mailto:sofdev at edulists.com.au>>
Subject: Re: [Year 12 SofDev] Programming Help

Hi Folks,

  I know VB is the overwhelming language of choice for SD teachers.  Whilst we have some resources for VB.NET programming at http://www.edulists.com.au/sofdev/index.htm , wouldn’t it be wonderful if we could get perhaps a graduated set of worksheets/lessons/tasks that could be shared by others especially those who are struggling and would love some help ?

I am more the PHP, Java, C# type of person and don’t have a ready made set of tasks to pass on in VB , but since around 90% of teachers do choose VB, perhaps some could help to make Victoria’s and others’ lives a little more manageable when faced with something as challenging as a new Yr 12 course and no programming practice for many years.

Kind Regards


Kevork Krozian
IT Pathways Manager
Ringwood Trade Training Facility
Tel: 0419 356 034

From: sofdev-bounces at edulists.com.au<mailto:sofdev-bounces at edulists.com.au> [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Howard, David
Sent: Wednesday, 30 April 2014 11:16 AM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Programming Help

There are great courses on Codecademy and Lynda.com


David Howard
Head of Learning Systems

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From: Victoria Farrell <FarrellV at humegrammar.vic.edu.au<mailto:FarrellV at humegrammar.vic.edu.au>>
Reply-To: Year List <sofdev at edulists.com.au<mailto:sofdev at edulists.com.au>>
Date: Wednesday, 30 April 2014 10:51 am
To: Year List <sofdev at edulists.com.au<mailto:sofdev at edulists.com.au>>
Subject: Re: [Year 12 SofDev] Programming Help

Hi Kevork

In SD I’m using VB, but I have a Computer Club for all students who want to participate in various activities. I am more familiar with Small Basic, so I have been teaching the other classes SB as I thought it’s a good introduction.

Any suggestions for programming short  courses would be appreciated – as I spend hours of my time updating my skills in everything else and teaching myself programming is proving too difficult.

Cheers,
Vic

From:sofdev-bounces at edulists.com.au<mailto:sofdev-bounces at edulists.com.au> [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Kevork KROZIAN
Sent: Wednesday, 30 April 2014 9:16 AM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Programming Help

Hi Victoria

What language are you using in your course ?

Kevork


Sent from my Samsung GALAXY S4 on the Telstra 4G network

-------- Original message --------
From: Victoria Farrell
Date:30/04/2014 7:51 AM (GMT+10:00)
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Programming Help

Thank you SO MUCH Peter, this has helped a lot!!!

Vic

From:sofdev-bounces at edulists.com.au<mailto:sofdev-bounces at edulists.com.au> [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Coventry, Peter J
Sent: Tuesday, 29 April 2014 7:06 PM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Programming Help

The program you have is slightly different in its intentions – it asks for a number n and then generates the first n prime numbers.

However it could be adapted fairly easily by modifying the exit condition for the loop. (i.e. the program would ask for the last number and then check if Num=n to exit MainLoop. The Ender section would print Array.GetItemCount(Prime)

I’ve added some comments to the program to hopefully explain how it works.

Disclaimer: I don’t teach SD, and don’t really know Small Basic – I did a fair bit of programming in another life and still enjoy the occasional dabble.

Cheers,
Peter

From:sofdev-bounces at edulists.com.au<mailto:sofdev-bounces at edulists.com.au> [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Victoria Farrell
Sent: Tuesday, 29 April 2014 8:27 AM
To: Year 12 Software Development Teachers' Mailing List
Subject: [Year 12 SofDev] Programming Help

Hi,

Very new to Software Development and it’s been 20 odd years since programming at Uni, I could use some help with a problem.

I recently had students involved in the Melbourne University Programming Competition and had problems with solving the following question:

A positive integer x > 1 is a prime if its only factors are 1 and x. Hence the numbers 2, 11, and 101 are primes, but 1, 9,
and 1001 are not prime*.
The input to your program is a single positive integer n. The output should be the number of primes that are _ n.
For example, if the input is 1000 then the output is 168.
* In case you’re wondering, 1001 = 7 _ 11 _ 13.
Your five answers should be for
1.n = 10
2. n = 100
3. n = 100; 000
4. n = 10; 000; 000
5. n = 20; 000; 000


We decided to solve in Small Basic so as to get a handle on lops and arrays, but did not manage to solve it. I found a solution online (below) but was not able to understand how the array worked. It doesn’t solve the problem exactly as it just lists the input number of primes, but it certain can calculate/select for primes.

Init:
TextWindow.WriteLine("How many Prime numbers (1-1000)? ")
N=TextWindow.ReadNumber()
IfN<1Or N>1000Then
  TextWindow.WriteLine("That's All Folks!")
  TextWindow.Pause()
  Program.End()
EndIf


Prime="1=2;"  ‘ Prime is an array to hold the prime numbers we find. Start by creating a single element array with value 2 – the first prime number
Num=Prime[Array.GetItemCount(Prime)] ‘ Num is the current number we are checking to see if it is prime. This gets the value of the last element in Prime. Could have also said Num=2


MainLoop:
Num=Num+1 ‘ looking at the next number to see if it is prime

  Flag=1 ‘ Flag is 1 if Num is prime

  For i=1ToArray.GetItemCount(Prime)  ‘ Loop through each of the prime numbers in the array so far,
    If(Math.Remainder(Num,Prime[i])=0)Then  ‘ check ifthe prime number is a factor of Num
      'Not Prime
      Flag=0 ‘ resets Flag
      i=Array.GetItemCount(Prime) ‘ sets i to the last value so it exits this loop
    EndIf
  EndFor
  If Flag=1Then ‘if we get to here with Flag=1 then the number has no factors besides itself – so it is prime
    Prime[Array.GetItemCount(Prime)+1]=Num  ‘add this number to the end of the Prime array
    TextWindow.Write(Array.GetItemCount(Prime))  ‘print something out
    TextWindow.WriteLine("   "+Num)
    ifArray.GetItemCount(Prime)>=NThen  ‘If we have found the number of primes requested, then exit the MainLoop
      Goto Ender
    EndIf
  EndIf
  Goto MainLoop



Ender:
'TextWindow.Write("Press any key to continue...")
TextWindow.WriteLine("---")
TextWindow.Pause()
GotoInit

Can anyone  give me a brief written description, or point me to an online resource that can explain how this array functions? Can anyone identify a Small Basic function more suited to this problem?

Thanks,
Vic

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