Array Problem
Hello,
I am a bit confused on why this code is not working. I have a two-dimensional array where I store String elements. I call it String [ ][ ] DixElements. Then I have another one-dimensional array, String [ ]backArray, where I copy-backwards each row of the two-dimension arraystarting from a row before the last Array.
public String [ ] BStorage(){
int size = DixElements.length;//two-dimensional array (globally defined)
for(int b = size ; b > 0; b-- ){
backArray =new String [DixElements[b-1].length];//backArray is a one-dimensional array and it is globally defined
for (int d = 0; d < backArray.length; d++){
backArray[d] = DixElements[b-1][d];
System.out.println(backArray[d]);
}
}
return backArray;
}
If I run it, I always get all the rows except the first row but I wanted to get all the rows except the last row.
Thanks for the help.
Jona_T
[1453 byte] By [
Jona_Ta] at [2007-11-27 3:59:02]
Have you tried
for (int b = size; b > 1; b--)
{
backArray = new String [DixElements[b - 2].length];
for (int d = 0; d < backArray.length; d++)
{
backArray[d] = DixElements[b - 2][d];
}
}
remember that DixElements[size-1] is your last row of the array. To get all but the last row you need to do DixElements[size - 2] to DixElements[0]
Message was edited by:
petes1234
Here's a working example of what I meant:
public class Foobar
{
static String[][] DixElements = new String[][]
{
{"this is line 00", "this is line 01", "this is line 02"},
{"this is line 10", "this is line 11", "this is line 12"},
{"this is line 20", "this is line 21", "this is line 22"}
};
static String[][] BStorage(String[][] dixElmnts)
{
String[][] backArray = new String[dixElmnts.length - 1][];
for (int i = 0; i < backArray.length; i++)
{
backArray[i] = new String[dixElmnts[backArray.length - i - 1].length];
for (int j = 0; j < backArray[i].length; j++)
{
backArray[i][j] = dixElmnts[backArray.length - i - 1][j];
}
}
return backArray;
}
public static void main(String[] args)
{
for (int i = 0; i < DixElements.length; i++)
{
for (int j = 0; j < DixElements[i].length; j++)
{
System.out.println(i + ", " + j +": " + DixElements[i][j]);
}
}
System.out.println();
String[][] myResultArr = BStorage(DixElements);
for (int i = 0; i < myResultArr.length; i++)
{
for (int j = 0; j < myResultArr[i].length; j++)
{
System.out.println(i + ", " + j +": " + myResultArr[i][j]);
}
}
}
}
