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Thread: Odious number

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    Default Odious number

    hello everyone..i need help with this problem to determine a number whether its odious number or not.. im wondering how to convert a given number to its binary value.. any idea? thanks..
    Last edited by ahanf; July 31st, 2012 at 04:05 PM.


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    Default Re: Odious number

    Consider reading the API for what you are attempting to do before requesting help on a public forum.

    Integer (Java Platform SE 6)

    Short psuedocode
    public static boolean isOdius(int num)
    {
      binary is the binary representation of the number
     
      counter is 0
      for each number in binary
      {
         if number equals 1
           counter is counter plus one
      }
      return if counter is odd
    }
    Last edited by Tjstretch; July 31st, 2012 at 04:09 PM. Reason: fail

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    ahanf (August 1st, 2012)

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    Default Re: Odious number

    how to convert a given number to its binary value.
    What format is the number stored in? String or int or ?
    What format should the converted number be in?
    See the Integer class for useful methods for doing conversions from one format to another.
    If you don't understand my answer, don't ignore it, ask a question.

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    ahanf (August 1st, 2012)

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    Default Re: Odious number

    String bin = Integer.to______String(12345);
    Integer binNum =  Integer.________(___);

    Fill in the blanks, if you need to make the binary number beyond Integer.MAX_VALUE, then use a Long, and if you still need more room, use a BigInteger.

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    Default Re: Odious number

    Quote Originally Posted by Norm View Post
    What format is the number stored in? String or int or ?
    What format should the converted number be in?
    See the Integer class for useful methods for doing conversions from one format to another.
    ^int value i guess..here's the question..
    In odious number is a nonnegative number that has an odd number of 1s in its binary expansion. The first few odious numbers are therefore 1, 2, 4, 7, 8, 11, 13, 14, 16, 19, ... (Sloane's A000069). Numbers that are not odious are said to be evil numbers.

    Determine if a given number is Odious or Evil number..

    btw..thanks for the help guys.. seems like i should have check javadoc first..too easy..
    Last edited by ahanf; August 1st, 2012 at 04:14 AM.

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    Default Re: Odious number

    Learning to read javadocs is a very important skill I've found.

    aesguitar, what's BigInteger? I've heard of it, but I've never actually looked into it. Please tell me more.

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    Default Re: Odious number

    Quote Originally Posted by lightOfDay View Post
    Learning to read javadocs is a very important skill I've found.

    aesguitar, what's BigInteger? I've heard of it, but I've never actually looked into it. Please tell me more.
    It is a big integer. Your favorite search engine is a better place to ask that question. Too much information is available already without the cost of volunteer's time.

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    Default Re: Odious number

    Jeez, sorry...

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    Default Re: Odious number

    Quote Originally Posted by lightOfDay View Post
    Jeez, sorry...
    I apologize if that come across rude. I did not mean it rude. Just pointing you in the right direction.

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