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Thread: Add objects to the neighbors list

  1. #1
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    Lightbulb Add objects to the neighbors list

    I have a java exercise follow: there are n machines of 3 type A,B,C, each machine has coordinates (x,y) and operate radius, with data get from a XML file, for instance:
    <machine>
    <number ="1">
      <type>C</type> 
      <cox>40</cox>
      <coy>80</coy>
      <rad>30</rad>
    </number>
    <number ="2">
      <type>A</type>
      <cox>25</cox>
      <coy>35</coy>
      <rad>40</rad>
    </number>
    <number ="3">
      <type>C</type>
      <cox>50</cox>
      <coy>10</coy>
      <rad>50</rad>
    </number>
    </machine>

    I made 3 class A, B, C and already got information from xml file. But the 2 problems is that:

    1. calculate the distance between each machine

    2. add them to list of each machine if distance is less than radius.

    I known the formula to calculate the distance but dont know how to get x, y to calculate nx(n-1) distances, and add them to list. Could anyone give me the idea to solve these 2 problems? Thank so much!


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    Default Re: Add objects to the neighbors list

    when you meant you got the information from xml file it contains x and y co-ordinates as well as child nodes. Then you have them as well for your calculation. Are you not sure of how to parse xml is that these question here??

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    Default Re: Add objects to the neighbors list

    Thank dineshj, i have done the first job (calculate the distance between each machine), my main question is how to add the neighbor machines to the list of each object. I think solution about add attribute List to the 3 class A, B, C (using arraylist). Then, when read from the xml, it will show the neighbor list of each object. I m coding now but not yet done.

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