Validate a Balanced INDENT and DEDENT Token Stream
Company: Figma
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Onsite
Overview: Validate whether an INDENT and DEDENT token stream remains balanced at every prefix and closes all open levels at the end. This compact problem tests one-pass state tracking, early rejection, empty-input behavior, and the difference between global counts and structural ordering.
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