Re: Determining the height of a non-binary tree

Dear Professor Eibe Frank,

I have changed my code with the following one:

int getHeight(ClassifierTree data){
    int height=0;
    if (data==null){
      return 0;
    }
    for (int i=0; i<data.m_sons.length; i++) {
      height = Math.max(height, getHeight(data.m_sons[i]));
    }
    return height + 1;
  }

but I don't know with which argument to call the function
in order to supply to it the ClassifierTree. I tried

height = getHeight(new ClassifierTree(m_toSelectModel));

but this gives me a NullPointerException!

Could you please help?

Thank you in advance,

Spyros Halkidis
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