The task was to write a command line calculator using TDD and pairing with one of the junior team members while observer was waching the interaction and code development. The requirements to the task was to have calculator which can perform simple arithmetic operation such as +,-,*,/ parethises were optional if the time permits.

Task wasn't hard, the key idea was to execute proper TDD and keep the interaction with pair going.
Interviewed for position: SDE

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