Dear Administration, clean the questions and answers in the challenges.
I do not exclude the fact that I myself am wrong, but some answers are really not correct(Especially pay attention to the increment and decrement).
I am game in Java.
People, I alone notice this or there is someone who agrees with me???
What to discuss?
Screenshoot, test in the Code Playground or check in reference literature, send to SoloLearn.
They replied to me within 24 hours.
P.S. And ask them to feed an updated quiz to your next 10 challenges. You know whom to challenge then ;)