Re: Filling 2 arrays, one being the reverse of the other

Knute Johnson <>
Sat, 03 Feb 2007 20:35:05 -0800
mmoski wrote:

I'm trying to create 2 arrays, inputHexArray and outputHexArray. The
second array should fill with, and return the reverse of
inputHexArray. This code throws no exceptions, and runs fine. The
only problem is that outputHexArray is returning null for every
value. Any suggestions?

                                   if(sign.equals("us") == true){
                        //initalize variables
                        String next =;
                        int inputHex = Integer.parseInt(next, 16);
                        int lengthOfArray = numberOfVals + 1;

                        //create 2 string arrays and set them to the same length
                        String[] inputHexArray = new String[lengthOfArray];
                        String[] outputHexArray = new String[lengthOfArray];

                        //fill both arrays, inputHexArray fills fine, outputHexArray
returns null for all values
                        outputHexArray[(lengthOfArray - 2) - i] = next;
                        inputHexArray[i] = next;

                        //print out both arrays, outputHexArray still returns null



public class test {
     public static void main(String[] args) throws Exception {
         String[] in = new String[20];
         String[] out = new String[20];

         for (int i=0; i<in.length; i++) {
             in[i] = Integer.toString(i);
             out[in.length - i - 1] = Integer.toString(i);

         for (int i=0; i<in.length; i++)
             System.out.println(in[i] + " " + out[i]);


Knute Johnson
email s/nospam/knute/

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