Happy Birthday, 10th GOOGLE (7/Sept/1998 - 7/Sept/2008)

Published
by
c1pher
on September 28, 2008
in Info & News
. 0 Comments

In September 7, 1998, Larry Page and Sergey Brin accept a $100,000 check from Sun Microsystems co-founder Andy Bechtolsheim and incorporate Google Inc. Google opened its door in Menlo Park, California. The door came with a remote control, as it was attached to the garage of a friend who sublet space to the new corporation’s staff of three. The office offered several big advantages, including a washer and dryer and a hot tub. It also provided a parking space for the first employee hired by the new company: Craig Silverstein, now Google’s director of technology.

Source: Google History
Facts: Google 10 commandments

Social Tagging

Published
by
c1pher
on September 21, 2008
in A word or two
. 0 Comments

I used to be addicted to blogging. Blogging made me spend a lot of time browsing around the blogs on the internet, made new friends, found out how to create a good and interesting kind of blog, how to put traffic to the blog and be happy to see when people come across to my blog and visit for a look or comment. These blogging activities had led me to a popular website called digg.com or say “Digg”. Digg is a website for people to share links content resources (e.g., pictures, movies, documents, stories, web pages) on the Internet and put it into a particular keyword or “tag”. Not only that, Digg also allows registered users to use two unique things, digging or burying facility while commenting. Dig simply means users put one point up to the posting and burry means not to vote, the more dig points or dugg Continue reading ‘Social Tagging’

JAVA Hands on Lab (2)

Published
by
khal
on August 20, 2008
in Programming
. 0 Comments

Read data from a file.
Object Oriented Software Engineering - Java
Khalilur Rahman

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package courseregistrationsystem2;

import java.io.BufferedReader;
import java.io.FileReader;

/**
 *
 * @author khal
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    static Course[] allCourses;
    public static void main(String[] args) {
        // TODO code application logic here
        allCourses = new Course[50];
        readSourceFile("StudentDataInput.txt");
    }
    public static void readSourceFile(String fileName){
        String code, venue, title, instructor;
        try {
            FileReader fileReader = new FileReader(fileName);
            BufferedReader in = new BufferedReader(fileReader);
            int numberOfCourse = Integer.parseInt(in.readLine());
            for (int i = 0; i < numberOfCourse; i++){
                if ((code = in.readLine())== null) break;
                if ((venue = in.readLine())== null) break;
                if ((title = in.readLine())== null) break;
                if ((instructor = in.readLine())== null) break;
                createCourse(i, code, venue, title, instructor);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
    public static void createCourse(int index, String code, String venue,
            String title, String instructor){

        allCourses[index]= new Course();
        allCourses[index].code = code;
        allCourses[index].venue = venue;
        allCourses[index].title = title;
        allCourses[index].instructor = instructor;

        System.out.println(allCourses[index].code);
        System.out.println(allCourses[index].venue);
        System.out.println(allCourses[index].title);
        System.out.println(allCourses[index].instructor);
    }
}

JAVA Hands on Lab (1)

Published
by
khal
on August 20, 2008
in Programming
. 0 Comments

Object oriented Software Engineering - Java
Khalilur Rahman

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package courseregistration;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.omg.PortableInterceptor.SYSTEM_EXCEPTION;

/**
 *
 * @author khal
 */
public class courseRegistration {

    /**
     * @param args the command line arguments
     */
    static Course[] allCourses;
    public static void main(String[] args) {
        // TODO code application logic here
        allCourses = new Course[50];

        allCourses[0] = new Course();
        allCourses[0].code =  "CI6201";
        allCourses[0].title =  "Professional Seminar";
        allCourses[0].venue =  "LT2";
        allCourses[0].instructor =  "Paul Wu";
        allCourses[0].academicUnit = 3;

        allCourses[1] = new Course();
        allCourses[1].code =  "CI6202";
        allCourses[1].title =  "Information Architecture";
        allCourses[1].venue =  "LT3";
        allCourses[1].instructor =  "Chris Khoo";
        allCourses[1].academicUnit = 3;

        allCourses[2] = new Course();
        allCourses[2].code =  "CI6203";
        allCourses[2].title =  "Software Engineering";
        allCourses[2].venue =  "LT5";
        allCourses[2].instructor =  "W K Ng";
        allCourses[2].academicUnit = 3;

        displayCourse();
        pickCourse();
        pickCourseCode();
    }
    public static void displayCourse(){
        try {
            for (int i = 0; i < 50; i++ ){
                if (allCourses[i]==null) break;
                System.out.println(allCourses[i].code);
                System.out.println(allCourses[i].title);
                System.out.println(allCourses[i].instructor);
                System.out.println(allCourses[i].venue);
                System.out.println(allCourses[i].academicUnit);
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

    }
    public static void pickCourse(){
        try {
            System.out.print("Enter the course code: ");
            BufferedReader in = new BufferedReader(
                    new InputStreamReader(System.in));
            int i = Integer.parseInt(in.readLine());
                System.out.println(allCourses[i].code);
                System.out.println(allCourses[i].title);
                System.out.println(allCourses[i].instructor);
                System.out.println(allCourses[i].venue);
                System.out.println(allCourses[i].academicUnit);
        } catch (Exception e) {
        }
    }
    public static void pickCourseCode(){
        try {
            System.out.print("Enter course ID: ");
            BufferedReader in = new BufferedReader(
                    new InputStreamReader(System.in));
            String code = in.readLine();
            for (int i =0; i < 50; i++){
                if (allCourses[i]==null) break;
                if (allCourses[i].code.equals(code)){
                    System.out.println(allCourses[i].code);
                    System.out.println(allCourses[i].title);
                    System.out.println(allCourses[i].instructor);
                    System.out.println(allCourses[i].venue);
                    System.out.println(allCourses[i].academicUnit);
                }
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

Algorithm?

Published
by
c1pher
on May 15, 2008
in A word or two
. 0 Comments

THe Father of AlgorithmThe word “algorithm”? is quite interesting; at first glance it may look as though someone intended to write “logarithm” but jumble up the first four letters. The word did not appear in Webster’s New World Dictionary as late as 1975; we found only the older form “algorism” with this ancient meaning, the process of doing arithmetic using Arabic numerals. During the Middle Ages, abacists computed on the abacus and algorists computed by algorism. By the time of the Renaissance, the origin of this word was in doubt, and early linguists attempted to guess at its derivation by making combinations like algiros [painful]+arithmos [number]; others said no, the word comes from “King Algor of Castile.” Finally, historians of mathematics found the true origin of the word algorism: It comes from the name of a famous Persian textbook author, Abu Abd Allah Muhammad ibn Musa al-Khawarizmi — literally, “Father of Abdullah, Mohammed, son of Moses, native of Khawarizm.” The Aral sea in Central Asia was once known as Lake Khawarizm, and the Khawarizm region is located in the Amu River basin just south of that sea. Al-Khawarizmi wrote the celebrated Arabic text Kitab al-jabr wa’l-muqabala (“Rules of restoring and equating”); another word, “algebra,” stems from the title of that book, which was a systematic study of the solution of linear and quadratic equations. [For notes on al-Khwarizmi's life and work, see H. Zemanek, Lecture in  Computer Science 122 (1981, 1-81.]

Gradually the form and meaning of algorism became corrupted; as explained by the Oxford English Dictionary, the word “passed through many pseudo-etymological perversions, including a recent algorithm,  in which it is learnedly confused” with Greek root of  the word arithmetic. This change from “algorism” to “algorithm” is not hard to  understand in view of the fact that people had forgotten the original derivation of the word. An early German mathematical dictionary, Vollstandiges mathematisches Lexicon: “(Leipzig: 1774), gave the following definition for the word Algorithmus: “Under this designation are combined the notions of the four types of arithmetic calculations, namely addition, multiplication, substraction, and division.” The Latin phrase algorithmus infinitesimalis was at that time used to denote “ways of calculation with infinitely small quantities, as invented by Leibniz.

By 1950, the word algorithm was most frequently associated with Euclid’s algorithm, a process for finding the greatest common divisor of two numbers that appears in Euclid’s Elements (Book 7, Propositions 1 and 2).

[Donald Knuth, The Art of Computer Programming, volume 1, 2007]

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