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Archive for the ‘Computer Programming’ Category

Course Information for All Courses 2017-2018

August 15, 2017 Leave a comment

IB Computer Science (Senior Year)
IB Computer Science (Junior Year)
Software Development and Games Programming
Physics (course information and assessment)

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Java Serialization Example

April 27, 2017 Leave a comment

Java provides a method of saving objects to file, called Serialization. In order for an object to be serializable it must implement the java.io.Serializable interface and you should set a version ID as well as shown below.

class Student implements java.io.Serializable {

   String name = "";
   Integer age = 0;
   Double gpa = 0.0;

   private static final long serialVersionUID = 1L;
}

You can save the object to file like this:

        try {
            FileOutputStream fileOut = new FileOutputStream(path);
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
            out.writeObject(obj);
        } catch (IOException i) {
            i.printStackTrace();
        }

And you can load it like this:

        try {
            FileInputStream fileIn = new FileInputStream(path);
            ObjectInputStream in = new ObjectInputStream(fileIn);
            obj = (Student)in.readObject();
        } catch (FileNotFoundException fnf) {
            System.out.println("No serialized file found at " + path + ". Creating new blank object.");
            obj = new Student();
        }
         catch (Exception e) {
            e.printStackTrace();
        }

Is IB Computer Science for me?

January 24, 2017 Leave a comment

Key things to remember:

About 50% of the course is programming, so you will need to enjoy programming. I have given you a short diagnostic challenge below. If you enjoy trying to solve it, then you should do IB Computer Science.

High school computer science is generally NOT a pre-requisite to study computer science at university, so you can do computer science later, even if you don’t do it now. This is not true of other subjects like chemistry and physics.

I don’t set homework outside of reviewing what we’ve done in class and revision for summative assessments. All summative assessments take the form of written tests in the style of the IB Computer Science exam. There are three per semester, including end-of-year and mock examinations. That’s not a lot of tests, but I will expect you to have prepared well.

As with all IB subjects you will have a substantial internally assessed project. In IB Computer Science this takes the form of a software development project in which you must plan, design, code and implement a computer program for a real client.

Do you like programming?

This algorithm prints every item in a list of 100 things.

i = 0
while i < 100:
  print list[i]
  i = i + 1

This algorithm prints every item in the list from back to front.

i = 100
while i > 0:
  print list[i-1]
  i = i - 1

This algorithm prints “Hooray” if it finds the number 7 in the list:

i = 0
while i < 100:
  if list[i] == 7 then:
    output "Hooray"
    break
  i = i + 1

Can you write an algorithm to determine if the list is a palindrome?
(ie it is the same forwards as backwards).

Donate to Wikipedia

January 10, 2017 Leave a comment

I just donated to @Wikipedia. Support free knowledge! #iloveWikipedia

Donate to Wikipedia now

Towards the end of the semester…

November 29, 2016 Leave a comment
  • You have three lessons to work on and complete your Greenfoot games.
  • We have ICARE next week.
  • Does anyone know what the plan is for the Friday of next week?
  • We will do a peer review on Tuesday of the last week of the semester in which you will play and judge each others’ games according to a set of criteria.

Girls coding

October 12, 2016 Leave a comment

International coding competition for girls!
Technovation Challenge

Google CS First

October 12, 2016 Leave a comment

Google offers Scratch-based clubs to attract younger students to coding.

https://www.cs-first.com/