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import java.lang.reflect.Array;
public class MainClass {
public static void main (String args[]) {
int[] array = (int[])Array.newInstance(int.class, 3);
for(int i=0;i<array.length;i++){
array[i] = i;
}
int[] arrayDoubled = (int[])doubleArray(array);
for (int i: arrayDoubled) {
System.out.println(i);
}
}
static Object doubleArray(Object original) {
Object returnValue = null;
Class type = original.getClass();
if (type.isArray()) {
int length = Array.getLength(original);
Class elementType = type.getComponentType();
returnValue = Array.newInstance(elementType, length*2);
System.arraycopy(original, 0, returnValue, 0, length);
}
return returnValue;
}
}
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