Flatten Nested List Iterator

Explore how to implement a Nested Iterator class that flattens a nested list of integers using stack-based methods. Understand how to design the constructor, Next(), and HasNext() functions to navigate nested lists effectively in C++. This lesson helps you grasp key stack concepts and apply them to solve complex nested data traversal problems.

We'll cover the following...

Statement
Examples
Understand the problem
Figure it out!
Try it yourself

Statement

You’re given a nested list of integers. Each element is either an integer or a list whose elements may also be integers or other integer lists. Your task is to implement an iterator to flatten the nested list.

You will have to implement the Nested Iterator class. This class has the following functions:

Constructor: This initializes the iterator with the nested list.
Next (): This returns the next integer in the nested list.
Has Next (): This returns TRUE if there are still some integers in the nested list. Otherwise, it returns FALSE.

...