a doubt

[Thia]

hi,
I would like to find number of occurences of objects in each column of a text file.. Can someone tell me how I could do tat?

[Fubarable]

You may wish to clarify your question so that it can be more easily answered. Best of luck.

[Eranga]

Can you bit more specific? What objects are you looking in a text file, the word object confusing. And also what you've tried so far?

[Fubarable]

Hello Eranga! :)

[Eranga]

Hi Fubarable. :)

I've just post earlier replay at the same time I guess... :P

[Thia]

contents in my text file are like this:
climate temperature humidity
/*The above three are the column names*/
hot high mild
hot mild cold
cool mild low..

the list goes on like this.. I wish to find number of occurences of hot,cool in the the column climate..similarly i wish to find the number of occurences of high,mild in the column temerature..

[Eranga]

First read line by line of the text file. Can you do that?

[Thia]

ya.. i can do that.. but how to find occurences in each column?

[Eranga]

If you can read the line of text, then tokernize by using the space character and keep them in an array. Them you can compare with what you want to do the process.

But this method not more efficient, because you have to deal with the counters are well. Collections in java like List, Map do the job in much better way in such instance.

[Thia]

can you send me a sample code for that?

[Fubarable]

Why not try to solve it first on your own, then if you run into a problem, post your attempted solution and we can help you work on it.

[Eranga]

Why not try to solve it first on your own, then if you run into a problem, post your attempted solution and we can help you work on it.

I agreed with Fubarable. I gave you the guidance, first give a try on it. If you stuck on something you can ask questions any time. But you must put some effort first.

[MuslimCoder]

you could also try counting as u read, like anytime you read you check then increment the appropriate counter. it would make your program a bit faster.

[Eranga]

You've lots of ways to gain performance in the code, but the most important thing is that the basic model of the application.

If you've tried something and looking any feedback, post your code here.