Copying the first half of an ArrayList

Question

There is an ArrayList al, and I want to copy the first half of its elements into another ArrayList firstHalf. (If al

Answer 1

You should use add instead of set:

int x = al.size()/2 + (al.size()%2) - 1;
for(int i = 0; i < x; i++){
    firstHalf.add(al.get(i));
 }

It would be better to use List#subList