How to return a vector to another vector in Java?

Question

How to return a vector to another vector in Java?

Asked 7 years, 1 month ago

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I’m doing a program that applies hill climbing, but the value I need to compare to see if the previous one is better than the next one is a vector double

My method to find the best value returns an array double:

public double[] método(parâmetros){

   código

   return vetor;

}

What I’m not able to do is assign this vector to another vector:

public void método2(parâmetros){

   double vet2[] = new double[n];

   vet2[]=método(parâmetros);

}

My question is how I could return the vector and pass its values to another vector in another method?

If the best value is only 1 why return a double vector? And it would just be vet2 = método(parâmetros);

– Isac

2017/09/26 at 23:24
Thank you, that’s right.

– Magno

2017/09/26 at 23:40
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– Maniero

2017/10/07 at 17:03

2 answers

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by Maniero • **444,682** points · Answer 1 · 2017-09-26T23:25:11+00:00

This?

public double[] método(int n) {
    return new double[n];
}

public void método2(int n) {
   double vet2[] = método(n);
}

I put in the Github for future reference.

by Douglas Gabriel • 36 points · Answer 2 · 2017-09-27T00:07:35+00:00

You’re trying to do the following:

vet2[]=método(parâmetros);

It’s like you’re trying to access a null position of the vet2.

To associate a new vector to the variable, simply name it, without brackets:

vet2=método(parâmetros);