tags: Stack, Design
#[LeetCode 341] Flatten Nested List Iterator
Given a nested list of integers, implement an iterator to flatten it.
Each element is either an integer, or a list -- whose elements may also be integers or other lists.
Example 1:
Given the list [[1, 1], 2, [1, 1]],
By calling next repeatedly until hasNext returns false, the order of elements returned by next should be: [1, 1, 2, 1, 1].
Example 2:
Given the list [1, [4, [6]]],
By calling next repeatedly until hasNext returns false, the order of elements returned by next should be: [1, 4, 6].
Diffculty
Hard
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