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multi array

6 replies on 1 page. Most recent reply: Sep 17, 2003 8:05 AM by David

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Forrest

Posts: 2
Nickname: uu
Registered: Sep, 2003

multi array

Posted: Sep 15, 2003 11:17 PM

hi all,

i am having a problem. How can I create use for loop to create multi arrays? thx.

Senthoorkumaran Punniamoorthy

Posts: 335
Nickname: senthoor
Registered: Mar, 2002

Re: multi array

Posted: Sep 15, 2003 11:59 PM

float[][] mat = new float[4][];
for (int y=0; y<mat.length; y++){
   mat[y] = new float[4];
}

Forrest

Posts: 2
Nickname: uu
Registered: Sep, 2003

Re: multi array

Posted: Sep 16, 2003 12:49 AM

thank you very much.
i would like to ask a bit more.
i would like to create the number arrays, which depends on the user input. eg. user input 5, then create 5 arrays.

Senthoorkumaran Punniamoorthy

Posts: 335
Nickname: senthoor
Registered: Mar, 2002

Re: multi array

Posted: Sep 16, 2003 1:54 AM

I am not sure whether it is possible to create 5 different arrays since naming is going to be an issue. However what you could do is something like this...

create a two dim array based on the user input.

int userinput = 5;//get this value from the user
float[][] mat = new float[userinput][];for (int y=0; y<mat.length; y++){   mat[y] = new float[4];}

by the way whats the size of the each array you want to create?

zenykx

Posts: 69
Nickname: zenykx
Registered: May, 2003

Re: multi array

Posted: Sep 16, 2003 3:06 PM

Sorry Senthoorkumaran Punniamoorthy you just solved somebody's homework. This way, he will never advance in Java. Maybe it's better to point him to the right direction. :=)

Senthoorkumaran Punniamoorthy

Posts: 335
Nickname: senthoor
Registered: Mar, 2002

Re: multi array

Posted: Sep 16, 2003 4:41 PM

See, I didn't think of it as a home work. I have seen people posting like I need to write a calculator, or I need to write a system which has XYZ features. Those I considered doing home work. These people expect us to do all the work for them.

But in this case the problem is not writing and entire system as a home work for someone. The guy has done some work and seems to have problem in a particular area which he/she is not clear about. helping out in those areas are not a bad thing in my opinion.

When they are putting some effort towards the problem me also giving a hand and encouraging them to do their work sounds rational to me.

David

Posts: 150
Nickname: archangel
Registered: Jul, 2003

Re: multi array

Posted: Sep 17, 2003 8:05 AM

I agree with Senthoorkumaran. He's hardly written someone's entire project.

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