i am also writing Problem NOT of the week :D
bcoz i wont write a problem weekly in addition to i dont know the solution of my problems :)
almost... . .
during my internship time i spent in Mentor Graphics Cairo
i needed to implement a function and when i started coding i found that it was impossible to do it that way
may be there is a way that function can be implemented but i dont know how due to my small experience with JAVA Here is the problem definition:
Programming Language used : of course u know its JAVA what r u looking at :P