is a “non-decreasing” sequence “increasing”?

Question

While studying the book \"Introduction to Algorithms by Cormen\", I found a strange thing. Everywhere if it refers to an increasing order, the book refers it as \"non-decrea

Answer 1

The series can be increasing and decreasing as others already explained but can also be non of them.

(1,3,2,4,5,9,1,0)

Is neither decreasing nor increasing. However, there are subsets like 2,4,5,9 that are increasing or 9,1,0 decreasing