Increasing Decreasing Sequence problem not clear

Can you explain me with one example as to how to solve this question?

Hi!
If you can split the seq into two sub seq, such that first sequence is strictly decreasing and second sequence is strictly increasing.
For e.g.,
1 2 3 4 5
here 1,2,3,4,5 is strictly inc and the dec seq is Null
or 5, 4, 1, 2, 5
here 5,4,1 is dec and 2,5 is increasing
Example: 1,2,6,4,3 is not the desired seq
as its inc and then dec

You can say that if a seq increases, it must only increase and not decrease after that

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.