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DIY: Flatten Nested List Iterator

Explore how to build a NestedIterator class that flattens complex nested lists by implementing functions to retrieve integers sequentially. This lesson helps you understand how to traverse and flatten nested data structures, a common coding interview challenge.

Problem statement

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

You will have to implement the NestedIterator class. This class has the ...