How NetBeans helped in 100th day of school celebration ?

My friend's daughter got a family assignment from school to commemorate 100th day in school. If each letter in the English alphabet is assigned a weight corresponding to it's position (e.g. "a" is 1, "b" is 2, ... "z" is 26) then she was supposed to collect 10 words whose letters sum total to 100.

They spent last 1.5 days and found only 3 words and were discussing the problem at the lunch table earlier today. Here is a small piece of code that I wrote to help them out:

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    private static final char[] WEIGHT = {
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',
        'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
        'w', 'x', 'y', 'z'
    };

    /\*\*
    \* @param args the command line arguments
    \*/
    public static void main(String[] args) throws Exception {
        if (args.length == 0) {
            System.out.println("At least one argument required");
            return;
        }
        BufferedReader in = new BufferedReader(new FileReader(args[0]));
        String string = in.readLine();
        while (string != null) {
            StringTokenizer tokenizer = new StringTokenizer(string);
            while (tokenizer.hasMoreTokens()) {
                String word = tokenizer.nextToken();
                if (wordStrength(word) == 100)
                System.out.println("100 letters old: " + word);
            }
            string = in.readLine();
        }
    }

    static int wordStrength(String word) {
        int strength = 0;
        for (int i=0; i<word.length(); i++) {
            int charStrength = Arrays.binarySearch(WEIGHT, word.charAt(i));
            if (charStrength >= 0)
                strength += charStrength+1;
            }
            return strength;
        }
    }
}

This application was easily created using NetBeans 6. And then I copy/pasted articles from my favorite news sites in a file, passed it as command-line argument by right-clicking the project, selecting "Properties" and specifying the file name in "Arguments".

Hit F6, and voila got more than 10 words :)

Technorati: netbeans school assignment

Comments:

Arun,

Great help. Thanks!

/.rocky

Posted by Rocky on February 06, 2008 at 06:48 AM PST #

Since you also talk about Ruby and Rails here a lot, I did the same thing in the ruby version of the Netbeans IDE. Here's the ruby code:

#!/bin/ruby

@weight = %w{a b c d e f g h i j k l m n o p q r s t u v w x y z}

if ARGV.size < 1 then
puts 'At least one argument required';
exit!
end

def word_strength(word)
word.split('').inject(0) { |sum, c|
sum += (@weight.include? c) ? @weight.index(c) + 1 : 0;
}
end

ARGF.each do |line|
line.chomp.split(/ /).each { |word|
puts "100 letters old: " + word if word_strength(word) == 100
}
end

Posted by Erik on February 08, 2008 at 06:34 AM PST #

This is nice, thanks!

Posted by Arun Gupta on February 11, 2008 at 09:54 AM PST #

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Arun Gupta is a technology enthusiast, a passionate runner, author, and a community guy who works for Oracle Corp.


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