Maintain Fractional Stock Inventory Across Orders

Company: Robinhood

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Onsite

Overview: Simulate sequential customer buy and sell orders while keeping a firm's fractional stock inventory between zero and one share. The task uses scaled integer quantities and prices, exact dollar-to-share conversion, whole-share flattening, and deterministic symbol-sorted output.

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