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Well if we are talking about programming, then I would use a set.
Load the content of the bag into a set, try to take out all the numbers from 1 to 100, if the operation fails the number is not in...

Hi,
The interface definition is incorrect IMHO. It should look like this.


public interface Vehicle<T> {
public T copy();
}

public class Car implements Vehicle<Car> {

I do not think this is possible.
It wouldn't be a problem during compile, but in runtime the type of T is unknown. Thank to java's type erasure of generics to provide backward compatibility.
As I...