Algorithm - How to delete duplicate elements in a list efficiently?

Question

There is a list L. It contains elements of arbitrary type each. How to delete all duplicate elements in such list efficiently? ORDE

Answer 1

For Java could go with this:

private static  void removeDuplicates(final List list)
{
    final LinkedHashSet set;

    set = new LinkedHashSet(list); 
    list.clear(); 
    list.addAll(set);
}