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Thread: Simple Java Program - hasTeen [HELP]

  1. #1
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    Default Simple Java Program - hasTeen [HELP]

    I am trying to create a program that does the following:
    "We'll say that a number is "teen" if it is in the range 13..19 inclusive. Given 3 int values, return true if 1 or more is teen.

    My code:
    public class hasTeen
    {
       public static void main()
       {       
            System.out.println(" hasTeen(13, 20, 10) =" + hasTeen(13, 20, 10));
            System.out.println(" hasTeen(20, 19, 10) =" + hasTeen(20, 19, 10));
            System.out.println(" hasTeen(20, 10, 13)=" + hasTeen(20, 10, 13));
            System.out.println("\n---end hasTeen---\n");
        }
     
        public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
        {
            return false;
        }
        else
        {
        return true;
        }
    }
    }

    And when I run it they all come up false. Here's the original problem:
    hasTeen(13, 20, 10) = true
    hasTeen(20, 19, 10) = true
    hasTeen(20, 10, 13) = true

    I get false for all of these. What's wrong with my code?


  2. #2
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    Default Re: Simple Java Program - hasTeen [HELP]

    You put "return false" in the wrong position, where the "return true" should be. Try inverting them like this:

    public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
        {
            return true;
        }
        else
        {
        return false;
        }

  3. #3
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    Default Re: Simple Java Program - hasTeen [HELP]

    Quote Originally Posted by Henry518 View Post
    You put "return false" in the wrong position, where the "return true" should be. Try inverting them like this:

    public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
        {
            return true;
        }
        else
        {
        return false;
        }
    Yes, they now return true, but when I input 3 numbers that aren't "teen", like (1, 4, 3), it still comes out as true, when it should be false as none of those numbers are "teen".
    Error:

  4. #4
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    Default Re: Simple Java Program - hasTeen [HELP]

    Alright, true... I found the problem:

    public static boolean hasTeen(int a, int b, int c)
    {
    if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
    {
    return true;
    }
    else
    {
    return false;
    }

    Fixing that, it should look like this:

    public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 13 && b<= 19 || c >= 13 && c<= 19)
        {
            return true;
        }
        else
        {
        return false;
        }

  5. The Following User Says Thank You to Henry518 For This Useful Post:

    HeroFlame (October 23rd, 2011)

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    Default Re: Simple Java Program - hasTeen [HELP]

    Quote Originally Posted by Henry518 View Post
    Alright, true... I found the problem:

    public static boolean hasTeen(int a, int b, int c)
    {
    if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
    {
    return true;
    }
    else
    {
    return false;
    }

    Fixing that, it should look like this:

    public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 13 && b<= 19 || c >= 13 && c<= 19)
        {
            return true;
        }
        else
        {
        return false;
        }
    Thanks so much!!

  7. #6
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    Default Re: Simple Java Program - hasTeen [HELP]

    Quote Originally Posted by Henry518 View Post
    Alright, true... I found the problem:

    public static boolean hasTeen(int a, int b, int c)
    {
    if ( a >= 13 && a<= 19 || b >= 11 && b<= 19 || c >= 13 || c<= 19)
    {
    return true;
    }
    else
    {
    return false;
    }

    Fixing that, it should look like this:

    public static boolean hasTeen(int a, int b, int c)
        {
        if ( a >= 13 && a<= 19 || b >= 13 && b<= 19 || c >= 13 && c<= 19)
        {
            return true;
        }
        else
        {
        return false;
        }
    It's good to help but don't spoon feed. Try to provide hints.
    THanks

  8. The Following User Says Thank You to Mr.777 For This Useful Post:

    Henry518 (October 24th, 2011)

  9. #7
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    Default Re: Simple Java Program - hasTeen [HELP]

    Quote Originally Posted by Mr.777 View Post
    It's good to help but don't spoon feed. Try to provide hints.
    THanks
    Thanks for the suggestion, i'll try to keep that in mind. ^^

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