How to solve these errors??

Question

This program splits an int array to two arrays: one containing only even numbers, and the other only odd numbers. The two arrays are returned by the split method as array of two arrays, with the first containing only the even numbers and the second containing only the odd numbers.
The source code:
class OddEven
public static void main(String[] args) {
int[] input = {10, 5, 6, 1, 2, 17, 9, 4, 33, 11, 9, 8};
// splits the array into two arrays
int[][] output = split(input);
System.out.print("original: " + input.length);
for (int i = 0; i < input.length; ++i) {   
if ( i % 2 == 1);
System.out.print(" even: " + i);
if ( i % 2 == 0);
System.out.print(" odd: " + i);
public static int[][] split(int[] ori) {
int i,even = 0,odd = 0;
// The result is a 2d array with result[0] containing even nos and result[1] containing odd nos
int result[][];
for(i = 0; i < ori.length; ++i){
// Even
if( ori[i] % 2 == 0) {
result[0][even] = ori;
even++;
else
// Odd
result[1][odd] = ori[i];
odd++;
return result;
This is what i should get when it is run.
D:\> OddEven
original: 10 5 6 1 2 17 9 4 33 11 9 8
even: 10 6 2 4 8
odd: 5 1 17 9 33 11 9
However i get these 3 errors:
1. variable result might not have been initialised
result[0][even] = ori[i];
2. variable result might not have been initialised
result[1][odd] = ori[i];
3. missing return statement
public static int[][] split(int[] ori) {
I do not know how to rectify these errors. Can anyone help me please! Thanks

Answer 1

The subject matter seems very familiar...
However i get these 3 errors:
1. variable result might not have been initialised
result[0][even] = ori;
2. variable result might not have been initialised
result[1][odd] = ori[i];
it's due to the fact that result[][] may have been declared, but the actual array(s) not created, hence the accesses would cause problems.
just declare as follows :-
int[][] result = new int[X][Y];
where X, Y are the number of elements in each.
3. missing return statement
public static int[][] split(int[] ori) {If you really don't know the answer to this one, then give up. The error message clearly indicates the problem, and if you have to ask people something which is very, very basic Java...