Where to test my skills?
Is there a webpage whith good level where I can test my skills in this languages:
Actionscript
php
c++
java
ruby
ruby on rails
python
pl/sql
sql

I'm looking for a multiplechooice page with question in language with the same or more skill level as it would be this one for an algorithm test:

> What is the time complexity of
> calculating scalarProduct(...) for two
> vectors of size n, in the worst case?
> Assume integer arithmetic in O(1).
> Choose one answer. 	 
a. O(n^2)	 	 
b.
> O(2^n)	 	 
c. O(n )	 	 
d. O(log n)	 	
> e. O(n log n)

Not the answer of this problems, more problems but focused to this kind of problems :D

any suggestions? or any good questions that you could post?

Thanks and sorry for the english, I will try to improve it.
Where to test my skills?
===

Is there a webpage whith good level where I can test my skills in this languages:
Actionscript
php
c++
java
ruby
ruby on rails
python
pl/sql
sql

I'm looking for a multiplechooice page with question in language with the same or more skill level as it would be this one for an algorithm test:

> What is the time complexity of
> calculating scalarProduct(...) for two
> vectors of size n, in the worst case?
> Assume integer arithmetic in O(1).
> Choose one answer. 	 
a. O(n^2)	 	 
b.
> O(2^n)	 	 
c. O(n )	 	 
d. O(log n)	 	
> e. O(n log n)

Not the answer of this problems, more problems but focused to this kind of problems :D

any suggestions? or any good questions that you could post?

Thanks and sorry for the english, I will try to improve it.