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Thread: 2 dime array with following methods

  1. #26
    Super Moderator Norm's Avatar
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    Default Re: 2 dime array with following methods

    I think the two dim array is confusing you. To learn how to use arrays and the indexes to arrays, try writing a simpler program. Write a new program that defines a short (3 element) array. Write a loop to find the smallest element in the array and print out its index after the loop that looks through the elements in the array. That should be a short simple program to show you how to remember the index to the smallest element in the array. It will be simpler than working with a two dim array.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: 2 dime array with following methods

    public class smallestIndex1
    {
    	public static void main( String [] args )
    	{
    		//declare and instantiate the array
    		int [] smallestIndex = {  13,11,12,10,14,15 } ;
     
    	int min = 0;
     
    	for ( int i =1; i < smallestIndex.length; i++ )
    	{
    		if ( smallestIndex[i] < smallestIndex[min] )
    			min = i;
    	}
     
    	System.out.println( " The smallest int appeared at index >" +
    								min );
     
    	}
    }
    like this?

  3. #28
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    Default Re: 2 dime array with following methods

    Did that code work? It looks like it could.

    If it works, then consider what changing the array to two dimensions will do to the coding.
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    Default Re: 2 dime array with following methods

    yea that code works and i guess thats my problem once the seconds dimension is added i cant seem to figure it out

    --- Update ---

    besides add the aspect of [j] i guess

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    Default Re: 2 dime array with following methods

    Change the code in the test program to use a 2 dim array with data in the second row:
    	int [][] smallestIndex = {{1},  {13,11,12,10,14,15 }} ;
    Then change the loop to search the data in the second row
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    Default Re: 2 dime array with following methods

    then it just goes back to saying
    smallestIndex1.java:17: error: bad operand types for binary operator '<'

  7. #32
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    Default Re: 2 dime array with following methods

    Two dim arrays require two indexes.
    The first index will be for the second row where the data to be searched is: [1]
    The second index will be the looping index:i or the min variable pointing to the smallest found so far.

    Also posted at: http://forums.devshed.com/java-help-...ml#post2861394
    If you don't understand my answer, don't ignore it, ask a question.

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