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Thread: Single Dimensional Array Help!

  1. #1
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    Default Single Dimensional Array Help!

    This is what I'm supposed to do:

    A Java program using single dimensional array. Have a list of 10 numbers and fetch a value based on the index.

    The second part is not very clear, so I ended up with my code saying:

    class SingleDimensionalArray
    {
    public static void main(String args[])
    {
    int a[]=new a[10];
    a[]={1,2,3,4,5,6,7,8,9,10};
    }
    }

    What's wrong with my code?And/or what did I leave out?


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    Default Re: Single Dimensional Array Help!

    There is nothing wrong with this program, but the how the values should be fetched is vague. Should the program ask the user to enter an index for the number to be returned, or should a method be created to fetch the value? You need to ask for clarification.

    What you currently have is a single dimensional array 'a' that has 10 numbers that can be accessed through a[0] to a[9]

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    Default Re: Single Dimensional Array Help!

    What is an index?

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    Default Re: Single Dimensional Array Help!

    And when I compile that program it comes up with 4 errors:

    SingleDimensionalArray.java:6: not a statement
    a[]=(1,2,3,4,5,6,7,8,9,19);
    ^
    SingleDimensionalArray.java:6: ';' expected
    a[]=(1,2,3,4,5,6,7,8,9,10);
    ^
    SingleDimensionalArray.java:6: not a statement
    a[]=(1,2,3,4,5,6,7,8,9,10);
    ^
    SingleDimensionalArray.java:6: ';' expected
    a[]=(1,2,3,4,5,6,7,8,9,10);
    ^

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    Default Re: Single Dimensional Array Help!

    Okay, I re wrote it and now I only have 1 error:

    class SingleDimensionalArray
    {
    public static void main(String args[])
    {
    int a[]= new a[10];
    a[0] = 1;
    a[1] = 2;
    a[2] = 3;
    a[3] = 4;
    a[4] = 5;
    a[5] = 6;
    a[6] = 7;
    a[7] = 8;
    a[8] = 9;
    a[9] = 10;
    System.out.println(a[0]);
    System.out.println(a[1]);
    System.out.println(a[2]);
    System.out.println(a[3]);
    System.out.println(a[4]);
    System.out.println(a[5]);
    System.out.println(a[6]);
    System.out.println(a[7]);
    System.out.println(a[8]);
    System.out.println(a[9]);
    }
    }

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    Default Re: Single Dimensional Array Help!

    Please put your code in tags:
    HTML Code:
    [highlight=Java] [/highlight]
    What is the error you are getting?
    An index is a reference number for a value (in an array). For instance, an index in your array:

    The index '2' refers to the integer value 3.
    Last edited by vanDarg; March 15th, 2011 at 12:44 AM.
    "Everything should be made as simple as possible, but not simpler."
    Asking Questions for Dummies | The Java Tutorials | Java Coding Styling Guide

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    Default Re: Single Dimensional Array Help!

    A few things to note. [] should be after the type, not the variable name ("int[] name", not "int name[]"). "new" should be followed by the type and not the variable name ("new int[10]", not "new a[10]"). It seems like you want to create the array and give it all its values in two lines. You can do it in one line, like this:
    int[] a=new int[]{1,2,3,4,5,6,7,8,9,10};
    Hope this clears things up .
    Last edited by Kerr; March 15th, 2011 at 12:08 PM.

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