java stream API is really cool addition to the java language (if you are a c++ hardcore fan please pass on this post :) ) i have tried to solve this problem and i tried multiple submission just to try out java stream API ... that submission was successful but this one wasn't and the only change is return a.parallelStream().allMatch(e -> e == a.get(0));
which was resulted in failure ... can anyone explain why e == a.get(0)
didn't work but int c = a.get(0) and e == c
did work ?
It's because in java Integer is a reference data type and comparing reference datatypes using
==
operator does not give the same result every time.Your code with a small change.
thanks :D
One more thing:
parallelStream()
is pretty useless on Codeforces and other online judges (and it should be less efficient than the regularstream()
if you are not able to run things in parallel).Same result in c++: