Quick 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.

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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