2 dim array

[Ravi Ahuja]

Hello ranchers
I was trying to do some experiment on multi dim array
I will let you all know that i am trying to add values of 2 multi dimensional array in a method and the return type of that method is a 2 dimensional array i am expecting s[ome]thing different but the output wat i am getting is s[ome]thing else pl[ease] help me here is the code


[HENRY: Removed unnecessary code tags and got rid of illegal abbreviations]
[ January 15, 2007: Message edited by: Henry Wong ]

[Ravi Ahuja]

 

public class ArrayTest
{
//array declaration
 
int arr1 [][]={{1,2,3},{4,5,6},{7,8,9}};
int arr2 [][]={{1,2,3},{4,5,6},{7,8,9}};
 
// sum starts here
public int[][] sum(int arr1[][],int arr2[][])
{
 
int arr1len=arr1.length;
int arr2len=arr2.length;
int avr=arr1[0].length;
int arr3[][]=new int[arr1len][avr];
if(arr1len==arr2len)
{
for(int i=0;i<3;i++)
{
for(int j=0;j<3;j++)
{
arr3[i][j]=arr1[i][j]+arr2[i][j];
}
}
}// if ends here
//System.out.println("arr3 is"+arr3.length);
 
return arr3;
 
}// method ends here
public static void main(String args[])
{
ArrayTest ar= new ArrayTest();
 
int arr[][]=ar.sum(ar.arr1,ar.arr2);
for(int i=0;i<arr.length-1;i++)
{
for(int j=0;j<arr[0].length-1;j++)
{
System.out.println(arr[i][j]);
}
}
 

}
}//class ends

[op]
i am expecting the output as
2
4
6
8
10
12
14
16
18
[/op]
[ap]
but the output is
2
4
8
10
please help me to get the output as mentioned above thank you
[/ap]

[Henry Wong]

for(int j=0;j<arr[0].length-1;j++) {
  System.out.println(arr[i][j]);
}

It's your for loop -- you are not iterating through all the members.

Henry

[Ravi Ahuja]

sorry sir didnt understood can you elaborate this please
Thank You


(removed code tags and spelled out "you" correctly)
[ January 15, 2007: Message edited by: Barry Gaunt ]

[Barry Gaunt]

What Henry want you to do is to look at the for loops where you are printing the array. The upper limits of the loops are incorrect. "j<arr[0].length-1" should be "j<arr[0].length". The same thing holds for the outer for loop.

You can also print your arrays like this:

    for ( int i = 0; i < arr.length; i++) {   
        System.out.println(java.util.Arrays.toString(arr[i]));
    }

[ January 15, 2007: Message edited by: Barry Gaunt ]

[Henry Wong]

When you have some time, please read this. It is far easier to "use real words" than to circumvent the posting checker.

Henry

[Ravi Ahuja]

[c]
Thanks Henry that clears my doubt
Thank you..!!
[/c]