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Thread: Comparing Input to array

  1. #1
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    Default Comparing Input to array

    Hello, I'm looking for some help on the following program.
    The program generally should follow this concept

    Create a program name Sequence.java which accepts an integer input from com-
    mand line and outputs “found” if the input is found in sequence array and “not
    found” otherwise. You need to define sequence to be of type array of int and
    statically initialize it as follows:
    int[] sequence = { 2,3,4,10,-11,25,31,-21, 14, 18, 131, 99, 721, 23, 44, 802, 820,
    -603, 102, 53, 64, -912, 1201, 3001 };

    Here is the code i wrote


    public static void main(String[] args) {



    int[] seq = {2, 3, 4, 10, -11, 25, 31, -21, 14, 18, 131, 99, 721, 23, 44, 802, 820, -603, 102, 53, 64, -912, 1201, 3001};

    int input = Integer.parseInt(args[0]);

    if (input == seq.length)
    System.out.println("Found");

    else
    System.out.println("Not Found");


    }
    }


  2. #2
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    Default Re: Comparing Input to array

    First off, I really don't think that the assignment wants you to pass the arguments in through the command line arguments. I would look into the Scanner class if I were you.

    Secondly, why are you comparing the input value to the array's length? What do you expect that to accomplish?
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    Default Re: Comparing Input to array

    I want to check if the input is part of the array not the length
    something that would look like this when i run different inputs


    java Sequence 4
    Found
    java Sequence -912
    Found
    java Sequence 555
    Not found

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    Default Re: Comparing Input to array

    Okay, I guess that's a logical first step. But why are you comparing the length?

    Hint: this looks like a job for a for loop.
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  5. The Following User Says Thank You to KevinWorkman For This Useful Post:

    hbonh (November 28th, 2011)

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    Default

    When you get the scanner working to retrieve input, you might want to read about for loops and array iteration.

    Sent from my GT-I9000 using Tapatalk

  7. The Following User Says Thank You to rolfba For This Useful Post:

    hbonh (November 28th, 2011)

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    Default Re: Comparing Input to array

    Ok, Thank You guys... I think I got it with the "for loop"
    Last edited by hbonh; November 28th, 2011 at 09:55 AM.

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