public class MainClass {
public static void main (String args[]) {
int array1[] = {1, 2, 3, 4, 5};
int array2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
System.out.println("Original size: " + array1.length);
System.out.println("New size: " + doubleArray(array1).length);
System.out.println("Original size: " + array2.length);
System.out.println("New size: " + doubleArray(array2).length);
}
static int[] doubleArray(int original[]) {
int length = original.length;
int newArray[] = new int[length*2];
System.arraycopy(original, 0, newArray, 0, length);
return newArray;
}
}
Original size: 5
New size: 10
Original size: 9
New size: 18