Increasing Decreasing Sequence

#1

what is array?

array is not taught yet here.why this question?

#2

Hi,
you can ignore this question right now and attempt later when you learn about array.
But array is a very simple topic to learn. you can get hundreds of websites which talk about a simple illustration of array and a simple program of it.
Although you need to practice a bit more on array to solve this kind of question.

an array is just a collection of elements.
Think about a problem(very simple example of array):
a user is providing you 1000 integers as input and you need to sum all elements. How will you do it based on your current knowledge?

Thanks