medium
Snack Bin Iterator — Flatten Nested Lists
Also known as: Flatten Nested List Iterator
Recursive type alias that models a nested snack tree.
This one is all about maintaining a clear stack meaning as you process input. Interviewers love it because it reveals your stack invariants and your edge-case discipline. Keep the stack invariant explicit; if it breaks, everything downstream breaks too.
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1Flatten the Snack Binseasy
2Part 2
3Part 3
Each locked part opens in the editor once the part before it passes.
Based onLeetCode